BMW i3 REx One Year Review

Delivery day: May 21st, 2014

Well that went by fast. After waiting patiently for years for BMW to bring the "Megacity" car, their first production electric vehicle to market, my first year of ownership really flew by quickly. On May 21st of last year I was the first i3 REx delivery in the US. My one year review is about a month late, but that has only given me some more time to gather my thoughts about it.

About a month into ownership last year, I authored two posts dedicated to my initial likes and dislikes. Many of those initial thoughts still hold true, but I've also had some changes of opinion as well as discovering new annoyances and new attributes which I appreciate.

One of the few pictures I have of my car in its real color; Laurel Grey. I wrapped it red the first week I had it.

Overall I'm very happy with my i3 and there isn't another car I'd prefer to have. It really suits my needs while offering the perfect balance of performance, utility, comfort and efficiency that I desire. I managed to pile up a little over 25,000 miles by my first year anniversary (I'm up to about 27k now) with 23,700 miles on battery alone and 1,300 miles with the REx engine running. That equates to about 95% all electric miles. I'm sure some will question whether I needed the range extender option at all since I only used it for about 5% of my driving and that's a valid question. I guess I didn't really need it, but I definitely don't regret spending the additional $3,850 for it and I'll explain why.

The REx performed perfectly on my 462 mile road trip from New Jersey to Vermont. Going there and back I drove a total of 111 miles on battery and 351 on the REx, needing a little under 10 gallons of gas for the trip. I'll gladly replace gassing up on long trips with a couple 30 minute quick charge stops once the infrastructure matures, but for now the REx is my best option for the occasional long trip.

First and foremost, the range extender allowed me to take the car every day without even thinking twice about whether I had enough range or whether or not I would have the opportunity to plug in during the day. Back when I did my initial likes and dislikes, the first thing I pointed out was that I think BMW missed an opportunity to separate themselves a bit from the pack of "80 mile EVs" out there. The 81 mile EPA range rating for the BEV i3 was just a little too low for me so I went for the REx. As it turns out, there weren't too many days which I needed the REx, but having it there allowed me to take the car on days I may not have because I wasn't sure how far I might need to drive that day. So in reality, the range extender allowed me to drive more electric miles than if I didn't have it. I'd say I probably only needed the REx about two or three times a month on average, and even then it was usually for less than twenty miles. There were a couple long road trips which accounted for the majority of miles, and a few times I needed it for 30 to 50 additional miles. When I first got the car I took it to get wrapped and the shop was about 130 miles from my house. The drive back was nearly all on the range extender. I took a couple 150 to 200 mile round trips, my wife took the car on a business trip to Pennsylvania and I also made a 462 mile round trip to Vermont. It's true I could have managed without the REx, but having it there increased the utility of the vehicle immensely and if I had it to do all over, I would definitely get the REx again. However, if BMW had optioned it with a 28-29kWh battery pack (33% larger), I would definitely choose that over the REx.

The car is holding up well and there are no squeaks or rattles to report. My interior still looks brand new, even with heavy use and high mileage for one year. I'm pointing that out because I have heard a few i3 owners report their leather seats showed premature wear, and even a couple people say the eucalyptus wood dash panels developing cracks (which BMW replaced under warranty). I have nothing negative or unusual to report on this though. Since I wrapped the car shortly after getting it, I can't really comment on how the exterior painted surfaces are fairing. Since this is the first BMW with all plastic body panels, and since BMW developed an entirely new way of painting the panels which uses 70 percent less water and 50 percent less energy than painting systems employed for their steel body panels, I think it's fair to wonder how well the painted panels will hold up over time. I have had a few people ask me how the wrap is doing and I can say that after a year of driving in New Jersey (including a harsh winter with a lot of snow and ice) the wrap is beginning to show signs of wear and even peeling on some of the corners. You really have to be looking at it hard to find the problem spots, but small issues are surfacing which I'm sure will only get worse. I really only intended to keep it wrapped for a year or so, so I'm not concerned. I figured this would happen after about a year. Just keep this in mind if you are planning to do a vehicle wrap. 

The wrap is bubbling a bit on the side mirrors

Wheel well beginning to peel

The redesigned fuel sensor

Over the year I had a couple of maintenance issues which needed service. The good thing was my dealer, JMK BMW, has i3s in their loaner fleet so I was able to drive an i3 even when my car was in for service, which amounted to a total of 14 days. The first issue was one that all the early i3's had, a blown onboard charger, or as BMW calls it, a KLE (Komfortladeelektronik or Comfort Charging Electronics in English). One good thing about the way BMW engineered the onboard charging is that there are two 3.7kW on board chargers, one in the main EME (Electrical Machine Electronics) and the other, the KLE, is installed separately from the EME. So if you do have a KLE failure, you can still charge the car, albeit at half speed. I can't give BMW a pass on this issue though. They had five years of field testing with the MINI-E and ActiveE, and to come out of the gate with a faulty on board charger is inexcusable in my opinion. To their credit, they quickly resolved the issue by re-engineering the KLE, and installing it in the existing i3 fleet. I've had the new KLE  in my car for 10 months now, and it's been working fine. There was another issue that all i3's with the range extender had, which was a faulty fuel pressure sensor. Almost immediately after the i3 launched, REx owners were getting a Check Engine light, even if they never fired up the REx. It turned out a fuel pressure sensor was getting corroded by the gasoline used in the US. Evidently the mixture is different from the gas used in Europe where the i3 had launched 6 months earlier without this issue, and the additives in the US gas were creating havoc with the sensor. Again BMW quickly made a new fuel pressure sensor, this one actually has gold plated connectors to resist corrosion.

My battery pack dropped from the car. The heating element is inside, below the battery modules

I also had a flaky voltage regulator for the battery heating element which was occasionally sending an error message. I don't think BMW was sure if the sensor was bad or if the regulator was bad so they just replaced both. That required removing my entire pack to replace the regulator. I was surprised that this major service was accomplished by my dealer in less than two days. The only other issues I had were flat tires; four of them to be exact. It's difficult for me to really assess blame on this, since flat tires are usually the fault of the driver for running over debris or adverse road conditions, but four flats in one year is a little troublesome. Could it be related to the rubber compound Bridgestone used to make these unique tires, or related to how tall and thin they are? The two main problems I have with this are the fact that since the i3 doesn't have a spare, you are left stranded unless the mobility kit (an air compressor and tire sealant) can temporarily seal the hole and allow you to drive home or to a repair shop. Secondly, the tall thin tires are unique to the i3, so they aren't always in stock at the dealer. One time I had to wait four days for the dealer to get one. 

With no spare tire onboard, a flat means you're getting towed

At least with a sidewall bubble you can drive to the dealer, but you still need to buy a new tire and hope it's in stock

Three of the four flats I had were caused by sidewall bubbles, which happen when the inner liner of the tire is damaged. Sidewall bubbles typically happen when you hit a pothole, curb or road debris. In all three cases when I had this happen, I hit a good sized pothole and immediately figured I'd have a problem. Pulling over once it was safe confirmed what I had expected. The other flat I had was caused by a large metal screw. In that case I was actually only a couple blocks from a BMW dealer who actually had the tire in stock and I was able to wait there and drive off about an hour later. A few years back I had a Porsche Boxster with low profile Pirelli tires and had sidewall bubble issues with that car also, so I know this is something that is common with low profile tires. The difference was the car had a spare tire and the Pirellis were available everywhere. If I could go back in time I probably wouldn't have gotten the $1,300 optional 20" sport wheels and I certainly would have paid the $1,000 for the tire and wheel insurance. I definitely like the look of the 20" wheels, but they are lower profile than the 19" stock wheels, and that makes them more susceptible to bubbling. 

91 miles on a charge is my personal best to date

As for the range, in warm weather (over 65 degrees) I can usually beat the EPA rated range of 72 miles per charge. In fact, I average about 78 miles per charge in these favorable conditions. The cold weather takes its toll and the worst range I ever got was 48 miles on a full charge before the REx turned on. This happened back in January when the temperature was below zero with ice covered roads and I didn't precondition the cabin or battery. I actually wanted to see just how bad the range could be in those conditions. However most of the winter when temperatures were under 30 degrees I averaged about 58 to 60 miles per charge. The furthest I ever drove before the REx kicked in was 91 miles, which I did shortly after taking delivery.

I'll now list the top ten things I either find annoying, would like to see corrected or added features to future i3s.

1) Configurable regenerative braking. I'd like to select how aggressive or weak the regenerative braking is. Other manufacturers offer this and the owners I've spoken with appreciate having control over their regen. The i3's regen does increase in strength when in Eco Pro and Eco Pro+ modes, but I'd prefer the ability to manually adjust it.

2) The car needs an extension flaps on the sun visors. There is a huge gap between the visors and early morning drives can be difficult when heading East. 

3) The charging connector needs to unlock from the vehicle when the charging session ends. BMW had said this would be part of the March 2015 software update (which I have) but it still doesn't work. 

The large gap between the visors allows the blinding sun to get through. Visor extension flaps would be appreciated.

4) The front storage compartment (frunk) should be waterproof. If that is problematic then install a snap-on or hinged cover to keep dirt and water spray out. 

The current configuration allows leaves, water and dirt to get into the frunk storage compartment. Anything stored up there gets dirty and wet. A cover would solve the issue. 

5) Remove the annoying disclaimers and seat belt gong every time you turn the car on.  The seat belt warning should give you ten or twenty seconds to buckle up before it sounds the alarm. I might code my car just to remove these.

6) Fix the windshield wiper. It currently pulls water back into the drivers view when it changes direction. During heavy rains there is a significant obstruction to the drivers view of the left side of the windshield. 

The wiper leaves a line of water on the windshield, and actually pulls it back into the drivers line of vision when it changes direction.

7) Add a battery temperature readout. BMW can bury it in iDrive if they don't want it on the main display screen, but put it somewhere. Many experienced electric vehicle drivers want to see their battery temperature.

8) Add a heated steering wheel. In my opinion heated seats and steering wheel should be standard on all EVs, especially ones from premium brands. I would have really appreciated it last winter.

9) Include an AM radio. Other EV manufacturers have figured out how to reduce the interference and offer it in their vehicles. I'm sure BMW can figure this out too, even if the reception isn't perfect. 

When the ACC disengages, you get this warning. The problem is by then it's already disengaged and the car is applying the regenerative braking.

10) Fix the Adaptive Cruise Control and Parking Assistant. These are really great features, and this kind of technology is expected in a car like the i3. The problem is the ACC disengages suddenly and doesn't recognize certain vehicles because of their tail light configuration. The car will drive right into the rear of a Dodge Charger for instance, because the Charger's taillights (which extend across the entire rear of the vehicle) for some reason confuse the ACC. Direct sunlight and sometimes overpasses also cause the system to shut off without warning. I dedicated a post to this issue a few months ago. The Parking Assistant is an automated parking feature which does an incredible job of parking the i3 in very tiny parking spots. It only needs an opening which is 22 inches longer than the car to park it. The problem is, I've had numerous people report to me that the car rubbed the curb during the automated parking, scratching the rims. I've had enough people tell me this happened to believe it wasn't just a couple cars malfunctioning. I believe there is an inherent flaw in this feature which needs to be fixed, so for now I recommend not using the Parking Assistant until we get word that the issue had been corrected. 

OK, so by now you must be thinking I must really hate the i3, considering all these things I've pointed out that I don't like. That wouldn't be correct. I actually love the car and wouldn't trade it for anything, but nothing's perfect, and BMW can definitely make adjustments which would improve the i3 in my opinion. Now I'll dive into my top ten i3 likes. 

1) Spacious interior. For a car that is only 13 feel long, it has a lot of interior room. It actually has nearly the same interior volume as a 3-Series which is more than two feet longer than the i3.

Spacious, comfortable and well laid out. The i3's interior is definitely one of its strong points

2) Beautiful interior. In my opinion the i3's interior is stunning and laid out perfectly. The seats are very comfortable and the outward vision is excellent.

3) It's incredibly fun to drive. The instant torque, combined with the light weight make the i3 the most fun to drive electric vehicle this side of a Tesla P85D. The low end acceleration (under 60mph) is fantastic and it's actually the fastest one of the fastest BMWs from 0-30mph. Somehow the tall, thin tires do their job and keep the car under control in hard turns. While it doesn't corner like an M3, it really does just fine when it needs to. I've let dozens of friends and family members drive it and they all walk away with an ear to ear grin. It's really a blast to drive.

4) Futuristic, sustainable construction. I love the fact that I'm driving the only volume production to ever be constructed with a passenger compartment primarily made of carbon fiber reinforced plastic, an all aluminum frame and thermoplastic body panels. There is absolutely nothing else like it on the road today. Plus, every stage of manufacturing and assembly was developed with sustainability in mind.100% of the electricity used in the Leipzig assembly plant is derived from the wind farm BMW installed on the site. It actually generates so much excess electricity that BMW sells the excess to the Volkswagen AG. Even the carbon fiber plant in Moses Lake, Washington where the CF is made is powered 100% by renewable hydro-power. 

BMW's Leipzig plant where the i3 is made. The on site wind turbines produce more energy than the plant uses.

5) The charging rate. I can consistently pull 7.2kW at home (30 amps @ 240v) and now that there are finally some CCS DC fast Chargers being installed I can look forward to fast charging on the go. I'll soon be installing a 24kW CCS DC Fast charger at my restaurant so I'll have access to it every day. One of the advantages of having a relatively small battery is it charges quickly! I can fully recharge in a little under four hours while charging level 2, and I can be at 90% in about three hours. Tesla is the only EV manufacturer in the US making on board charging equipment which can deliver more than 7.2kW from a level 2 (240v) source.

6) The efficiency. According to the EPA, the i3 is currently the most efficient car sold in America. Over the entire year I averaged 3.9 miles per kWh. In the warmer weather I'm usually around 4.5 mi/kWh and in the winter I was averaging about 3.5 mi/kWh. I should note that I don't drive the car softly, and I'm certain many other i3 owners see much better consumption figures. It's way too much fun to drive it like it was a Prius. Averaging 4 mi/kWh the i3 would cost the average American about $400 per year to drive 15,000 electric miles.

I needed to drive over 200 miles on the range extender when I drove it to Vermont last winter. I set the cruise control to 70 mph and the REx was able to sustain the charge level the entire trip without any issue, even with needing to make a few elevation climbs.

7) The range extender. I know above I said I'd prefer a larger battery over the REx, but that just isn't an option at this time. As far as range extenders go, I like how BMW set this one up. It's truly an auxiliary power unit, one that has no physical connection with the wheels and cannot drive the wheels under any condition. It's sole purpose is to maintain the battery state of charge and allow the driver to continue along until they have the opportunity to plug in. You'd never buy an i3 REx and not charge it, simply driving on gas all the time. It's not meant to drive just as well on gas as it is on electric and I like that. It's an electric car with a secondary power source meant for occasional use, and in that vein it works perfectly - well for me at least. In all of my REx-ing, I never had the vehicle go into reduced power mode which can happen if you are using more energy than the 650cc engine can deliver. This can happen under long sustained hill climbing at highway speeds. BMW is currently working on a solution which will allow for more robust range extender use. This feature will be called Hill Climb Assist and will be available in the Fall. All current REx cars will get the update. There is another option which some owners have done, and that's coding the car to allow REx-on-demand. I have not done that to my car because the range extender has been able to do anything I've called for it to do so far, and I've found that as long as I set the cruise control for 70 mph or lower, I can drive indefinitely, provided I keep refueling every 60 miles or so. Probably the best thing I can say about the range  extender is it's allowed me to never even think about my range anymore, I just get in the car everyday and drive. 

Resting at home. You can see the winter tire/wheel combo on the rack above the car. The Bridgestone Blizzak tires were excellent in the snow. I suspect this was an instance where the tall, thin tires actually improved the traction.

8) The attention. Everywhere I go people stop and ask me about the car. I understand many people might not like that, but I do like talking about it and having a discussion about why they should consider driving electric too. I know there are people who think the i3 is ugly, but the response I get from the majority of people is they think it's cool. I don't think the i3 is the best looking car on the road, but I definitely don't see it as ugly and neither do most of the people who stop me to ask about it. When I'm working I can see it through the windows in the parking lot. Every day people walk up to it, look inside and many take pictures of it. Like it or not, it generates a lot of interest.

9) Battery management system & preconditioning. The i3 has a sophisticated thermal management system which works with the preconditioning feature to keep the batteries within the optimum operating temperatures. Which, for the Samsung cells used by BMW is 67 to 104 degrees Fahrenheit. When the batteries are much cooler than 67 degrees, you begin to lose range and when the battery temperature is above 104 degrees the cells degrade and begin to lose capacity. Excessive heat can be one of the biggest enemies for prolonging lithium ion battery life so a good thermal management system will help extend the battery's life. The i3 uses R134a refrigerant which not only works very well, but also is extremely safe in the event of an accident. Liquid based thermal management systems have an elevated risk of fire in the event of a battery module rupture. In many of these systems it's possible for the liquid to act as an accelerant, and intensify the fire. R134a is an inert gas and simply dissipates in the event of a ruptured pack or fire. It's actually the same refrigerant used in most car air conditioning systems. I'm not saying I think liquid thermal management systems aren't safe, because that's not the case. I just believe using an inert gas is better, and the i3 is the only EV to employ this technology so it's worth noting. It's just another aspect of the car which demonstrates how far outside the box BMW went when engineering the i3, and a perfect example of why the i3 has been called "The most advanced vehicle on the planet".

The i3's navigation "spider map" offers a pretty accurate visual display on the cars current range in the different driving modes.

10) A lot of small things add up to really enhance the ownership experience. Besides the usual attributes expected in all electric vehicles like the quiet cabin and the smooth linear acceleration with instant torque, the i3 has some extras that really seem to make the whole car exceed the sum of its parts. I love the hill hold feature which keeps it from rolling like many other EVs do while stopped. The absence of artificial creep is a welcomed "addition" that some other EV manufacturers just don't seem to get. I've done more than one poll on this topic and the vast majority of people say they don't want artificial creep in their electric vehicle and BMW got this right. I love how the aggressive regen really allows "one pedal driving". While I did mention above that I wish the regen was adjustable, the level it's set at now is just about perfect for me in most driving conditions. Adjustable would be better, but as is the regen level is very good, probably the best of any electric vehicle in my opinion. The soft speed limiter helps to coach you to drive more efficiently if you want to, and the three different driving modes (Comfort, Eco Pro & Eco Pro+) gives the driver the ability to extend their range significantly. The "spider map" display in the navigation system shows how far the car can go in each driving mode, and alerts the driver if their selected destination is beyond the range, pointing them to possible charging stations along the desired route. The brake assist will sound an audible alert if it senses the car is rapidly approaching the vehicle in front of it and it will even apply the brakes automatically if you are going under 30 mph and it determines you are about to have a possible collision. I also really appreciate that most BMW dealerships now have i3s as loaner cars so i3 owners can continue to drive electric even if their car is in for service. Finally, the large center display screen is as crisp and clear as any I've seen. It is positioned so there is almost no glare issues and the HD rear view camera is television-quality clear.

---------------------------------------------------------------------------------------

The "Secret Service Menu" shows I have 19.1 kWh available when fully charged

So that pretty much sums up my thoughts after one year of ownership. I listed ten positives and ten negatives and hope the information above helps to paint a picture of what I believe are the i3's strengths and weaknesses. One more topic I'd like to touch on though is battery degradation. There are a lot of people curious about how well the battery is holding up over time and use. I'm going to be doing a more comprehensive post on this soon, but I'd like to at least mention what I've observed after 13 months and 27,000 miles. Fortunately, the i3 has a "secret service menu" in the OBC which allows the battery capacity to be displayed. While BMW officially states the i3 has a usable 18.8 kWh of the 21.6 kWh total battery pack, the service menu indicates we get a little more to access. An entire kWh more in fact. When new, the service menu shows approximately 19.8 kWh available. I've had others report seeing slightly less, but the majority of people who know how to access this info have told me the highest capacity figure they've seen was 19.8 kWh. I have been checking my capacity and watching it slowly decrease. It's currently showing that I have 19.1 kWh available, which would mean I've lost about 3.5% of my capacity in 13 months and 27,000 miles. I've plugged about 700 times during the year and virtually always charge to 100%. I'll be keeping an eye on this and will report back on the capacity loss here from time to time.

I have an 8.8kW solar array on my home in Chester, NJ. It generates most of the electricity I use for the house and charging needs.

I'd like to also point out that during the year, BMW added a numeric state of charge display. This was something I, and many other i3 owners asked for. It might seem like a minor detail, but what's most encouraging is BMW responded to their customer requests and through a software update added the SOC display. Of course there was always a SOC display there, in the form of a bar graph, but many people wanted to see it displayed more precisely, in a numeric value as well and BMW delivered. Now let's see if we can get the battery temperature display in year two...

By toggling through the OBC options, you can see the SOC of 47% in the upper left hand corner of the drivers display screen.

In closing, the i3 pretty much ended up as I expected. It's far from perfect, but so is every other car I've ever driven. I wish it had a larger battery (or a larger battery option), a few monochromatic paint scheme options (like I did with the wrap), offered in a "sport" version with the coilovers that come standard in the Japanese market and a few other sporty upgrades and I think BMW needs to address the issues with the ACC and Parking Assistant features. I don't mind that the moonroof isn't available in the US, and the unconventional exterior styling doesn't bother me. I am much more concerned with the car's interior since that is what I interact with while driving. Speaking of driving, for me it really all comes down to that. The i3 delivers more fun than you should legally be allowed to have at 4 miles per kilowatt-hour.

What the Frunk?

The front storage compartment (Frunk) of my i3 after driving a few weeks on the salt-covered winter roads of New Jersey - yuck!

First, let me begin by saying I was one of the people who really didn't mind the fact that the i3's front storage compartment (affectionately called the "frunk" by many since Tesla initially coined the term for the area under the hood of the Model S) wasn't waterproof. I never envisioned keeping anything up there that I would need to access frequently and since my Electronaut Edition i3 came with a nice storage bag that would keep whatever I put in there nice and dry, it was really a non-issue as far as I was concerned.

It looked a little better when I first got the car. Of course everything looks better new, but being exposed to all the elements means you really can't store anything up there that isn't waterproof & durable

It was so inconsequential to me at the time I didn't even list it as a minor annoyance when I did my initial likes & dislikes posts back in June. Well after living with the car for nine months now, I have some different perspectives and I think I'll soon go back and do an update on what I like and don't like about the i3. One of the things I'll add to the dislike list is the fact that the frunk area is easily penetrated by moisture, dirt, leaves and anything else that would find its way under the hood of a traditional ICE car.

Leaves can make their way into the frunk also, as found out by BMW i3 Facebook group member, Michal Cierniak

So why didn't BMW make this area waterproof? I have never gotten an official answer but my guess is because it would add weight and cost. Plus, since it is such a small compartment, they figured the vast majority of people would only use it for things like extension cords, a tool kit and the occasional use EVSE, all of which are OK to get wet once in a while. They probably also figured most people would get a bag to put those items in, and they even sell one such as the one that I have. Because I have an Electronaut Edition i3, mine was free and embroidered "Electronaut Edition." It keeps the items in the bag clean and dry, but the bag itself gets very dirty and isn't really pleasant to handle when it's covered in dust and now road salt. 

Which one would you prefer to handle?

The i3 has a lot of mechanical components up in the frunk area; they are just hidden by the removable screens on both sides of the frunk. Once you remove these snap on screens, you can see that area looks basically like a traditional ICE engine compartment, minus the engine of course. The storage compartment only occupies a small section of that area as opposed to the Model S. Since the Model S is so much larger than the i3, Tesla was able to utilize a huge portion of the area under the hood for storage, creating a large front trunk which they called the frunk and still have enough room to fit whatever mechanical parts they located up there. The i3 didn't have much space to spare since the front area of the car is so small, so the storage compartment seems like more of an afterthought than something that was a well planned design feature.

After removing the plastic frunk, and the snap-on shields on both sides of it, what you see looks very similar to a conventional gasoline or diesel powered car (minus the engine!) Photo credit: Tim Hood

If waterproofing the entire area up there just wasn't cost effective, or if it was going to add too much weight, then I do understand the reasoning, but what they should have done was provide a nice frunk cover that could snap on and provide - at the very least - a water-resistant seal. Perhaps some ingenious entrepreneur will manufacture and sell such a cover...

* If you want to use my car as the mold you know where to find me, and I'll be your first customer ;)

After 2,000 Miles Part Two: Dislikes

I have to say that overall I am very pleased with my i3. It's living up to what I had hoped it would be, and after a month of ownership I'm convinced it was the right electric vehicle choice for me. However that doesn't mean it's perfect. In fact it's far from perfect, but so is every other car out there. As much as I really love my i3, I can probably list a couple dozen things that I would have done differently. Listed below are some of the top things that I'm not particularly fond of.

I took this picture from an i3 display at the LA Auto Show. Somehow 100 miles turned into 82 miles once the production i3 was revealed.

The Range. So let's just get this out of the way now. I'm disappointed that BMW didn't deliver a real "100 mile" electric vehicle as they had been promising. The 81 mile EPA range on the BEV i3 and the 72 mile rating for the REx, falls a little short in my opinion. If the BEV i3 had an EPA range of 95 miles per charge or greater then I wouldn't have ordered the REx, and I think a lot of others share that opinion. I hope I'm wrong, but I believe this is going to hold back BEV i3 sales significantly. I think 82 miles falls just short of what many US customers will find acceptable for a premium electric vehicle.

Looks like the battery is 3 & 3/16th's out of 4 bars full. Wonderful.

No Proper State of Charge Gauge. When I first found out that the i3 wouldn't display the state of charge in numeric form, I was dumbfounded. Instead, the i3 state of charge display is just four bars that slowly erode as the range diminishes, and it displays the predicted amount of miles the car "thinks" you can travel. In other words, a Guess O Meter. When Nissan initially offered the LEAF, this is basically the same way they displayed the state of charge. Their customers complained so much, that after a couple years Nissan finally realized they made a mistake and added a proper state of charge display. I dedicated an entire blog post to this back in December of last year when it was revealed that the i3 wouldn't display the SOC. Still to this day I am in denial and refuse to believe it's not coming in a future software update. There is absolutely no logical reason for omitting it. It was simply a mistake on BMW's part and like Nissan they will indeed realize that and add it to the display at some point. I'm not saying they need to eliminate the bar system they have, just give us both and let the customer decide which they prefer to rely on.

Like the MINI-E before it, the ActiveE had a clear state of charge and battery temperature display. It's puzzling why both of these important features were omitted on the i3.

No Battery Temperature Readout. Like the state of charge gauge but to a lessor degree, this is a little puzzling. Maybe the majority of i3 owners might not really care what their battery temperature is, but I do and I know quite a few others who do too. It's further puzzling because both of BMW's beta test cars that I drove, the MINI-E and the ActiveE, had battery temperature displays. I like to see how well the thermal management system is performing, how hot the battery may have gotten while baking in the direct sun of a parking lot for a few hours, or how cold the cells are after parking outside overnight in the dead of winter. Knowing the battery temperature helps me know what to expect of the car performance-wise and can also help me to keep the cells from getting too hot in certain circumstances. The car knows the battery temperature, just provide that somewhere on a screen buried in iDrive somewhere and I guarantee many i3 owners will appreciate it.

When you are in "Glide Mode" the white bar is in the position it is shown here. As you use power the bar moves to the right (ePower) and if you are recuperating energy with regenerative braking, the bar moves to the left (Charge) of center.

Glide Position Difficult to Achieve and Maintain. BMW describes the i3's glide feature as such: "The BMW i3’s accelerator has a distinct “neutral” position; i.e. rather than switching straight to energy recuperation when the driver eases off the accelerator, the electric motor uses zero torque control to decouple from the drivetrain and deploy only the available kinetic energy for propulsion. In this mode, the BMW i3 glides along using virtually no energy at all." I've only had the car for a month, but it seems more difficult to find the glide (or coasting) position and then hold it, than it was on the ActiveE. A few years ago I was talking with a BMW engineer about this and I suggested there be a switch to turn off regen completely if the driver wished. I would prefer to do this on long, high speed highway driving where I want to coast as much as possible. I was told that they probably wouldn't offer such a switch to disable it because they would be worried the driver would forget they deactivated the regen, and possibly have an accident because they expected  it to engage later on. I still think this would be a good solution for maximizing efficiency by coasting at higher speeds.  

The kenaf deck in direct sunlight

You can see the reflection of the dash

Windshield Glare. The majority of the top deck of the dashboard is made of compressed kenaf fibers. The use of this material has garnered some criticism because some people think it looks cheap, and not worthy of being in a car made by a premium automaker. I actually like the look of it but what I don't like is that in direct sunlight I can see the reflection of the entire dashboard up on the windshield. After a few weeks I'm getting used to it and it isn't as annoying as it was when I first noticed it, but it definitely isn't ideal. The shiny kenaf surface does cast a pretty clear reflection on bright, sunny days.

No AM Radio. I like to listen to AM talk radio and I am a Mets fan (unfortunately). Mets games are only broadcast on AM so I was disappointed to find out that i3 doesn't have an AM radio. BMW spokesman Dave Buchko recently told Jim Motavalli the reasoning for excluding the AM radio was primarily due to interference from the electric motor: “We learned from our experience with MINI E and BMW ActiveE that the electric motor causes interference with the AM signal. Rather than frustrate customers with inferior reception, the decision was made to leave it off. HD Radio is standard on the i3 and through multi-casting, many traditional AM stations in key markets are available on secondary and tertiary HD signals.” I admit the AM radio in the MINI-E had really bad interference, so much so that I rarely listened to it, but it wasn't bad on the ActiveE. Other electric cars have AM radios and they don't seem to be all that bad. This is a little bit of a head-scratcher to me. I'm learning to live without it, but why should I have to?

Grooves like this in the pavement can be felt more in the i3 than in other cars. I believe it's because of the vehicles light weight combined with its narrow tires.

The Thin Tires Can Get Caught in Pavement Grooves. When roads are paved, unless they are narrow secondary or tertiary roads, they are usually done in multiple strips. This also allows the street to remain open with one lane of traffic flow at a time during the paving process. The problem is, the line where the two sections of the new pavement meet has tiny gaps and over time the road degrades with the help of water and ice and a groove develops. The i3's tires are so thin that they are effected by these grooves and uneven pavement more so than most cars that are heavier and have wider tires. It doesn't present a safety problem; the car doesn't lose any control, you just have to be cognizant of this and make sure you have a grip on the steering wheel when one wheel dips into pavement grooves - which is a good idea in any event. I also believe the very sensitive steering of the i3 adds to this sensation that the grooves are trying to steer the car for you. The i3 has very tight and sensitive steering. You only need to slightly lean in one direction or the other to make a turn, and it is something that takes a week or so to get used to. It has by far the most sensitive steering I have ever experienced on any car. The turning radius is also a freakishly-short 32.3 feet.

The Key FOB will open the front trunk, but not the rear hatch.

Key FOB Doesn't Open the Hatch. This is a minor complaint, and since my i3 has comfort access I can open the locked hatch just by grabbing the hatch handle as long as I have the key in my pocket. I would still prefer to have a button on the FOB that remotely opens the hatch. There is a button that opens the front trunk, which I will rarely ever need to open, I don't know why BMW didn't use that button for the rear hatch, or just add a button and have one for both.

Regen Braking is Less Aggressive. Before I start complaining, let me say that I've driven just about every modern electric vehicle and plug-in-hybrid and I believe the i3 has absolutely the very best regenerative braking system on the market. Telsa probably comes in second and the Volt, when driven in low mode, is right behind the Model S. BMW dialed back the regen on the i3 a bit, probably in the vicinity of about 10% when compared to the ActiveE. People who never drove the ActiveE or MINI-E won't understand what I'm complaining about because the i3's regenerative braking is still strong and very smooth. It can bring the car to a stop without using the friction brakes faster than any regenerative braking system on any other EV will. Still, I liked it stronger like it was on the ActiveE and MINI-E. I guess regenerative braking is like coffee. Some will prefer the Blonde Roast with cream while others want the Dark Roast served black. Give me my regen as strong as possible please. I recommended to BMW that they offer different regen settings and let the customer decide how strong they like it, but that didn't come to pass on the i3. It's still very good, and integrates seamlessly when decelerating, I would just prefer it a bit stronger.

When the car is locked the connector will not release, even when charging is finished

Locking Connector. While charging, the connector is locked to the car as long as the vehicle is locked. The connector cannot be released unless you unlock the doors, even when the charging session is complete. I've found this very annoying and so have many other i3 owners. The ability to lock the connector to the car should be configurable in iDrive, giving the owner options like "Unlock when charge is complete" and "Do not lock connector". Allow the owner to decide what works best for them. Many people like to share chargers, especially in EV-friendly California. These people will leave a note on their dashboard telling others it's OK to unplug them and use the EVSE once they have finished charging or after a specific time. The locking connector prevents any charger sharing unless you leave your vehicle unlocked, which is not a viable option in most circumstances. I can understand this locking feature would be necessary in Europe because the charging cables are not tethered to the EVSE like they are here in the US and this prevents theft. It seems BMW may have built the i3 for the European charging process and didn't consider the inconvenience it would cause for US customers. This is another feature I believe we'll see changed in a software update at some point in the future.

When I navigate this bend in the road by my house, the regenerative braking disengages. Since the road is also downgrade I find I have to use the friction brakes to keep from accelerating down the  hill. I didn't have to do that in the past while driving my MINI-E or ActiveE as both would allow the regenerative braking system to hold back the car during turns like this.

Regen Braking Disengages During Hard Turns. I'm a little surprised with the second complaint I have with the regenerative braking. While negotiating turns, the regen sometimes disengages which will give the sensation that the car is actually speeding up. Of course it isn't (unless you are going downhill), but when you are in full regen and it suddenly disengages, it does feel like the car is accelerating when if fact it just isn't being slowed down by the regenerative braking. During the MINI-E and ActiveE programs, I personally spoke to dozens of people who contacted me asking if my car ever suddenly surged ahead. What was happening with those cars was different though. If the regenerative braking system was operating and the car hit a pothole or a bump that caused the wheels to lose traction, the traction control would disengage the regen in an attempt to prevent the loss of control. When this happened, it would give the driver the sensation of sudden acceleration, especially when driving downhill. This was unsettling if you didn't understand what was happening and typically when this happened the owner would take the car to the dealer for service. The dealer would look it over and find nothing wrong and give it back to them. Frustrated, many of the drivers then contacted me to ask if anyone else had complained of this sudden acceleration problem. After explaining what was actually happening to them they understood what was going on. I would also caution them to always have their foot ready to press the friction brake when they were using regen to slow the car down, especially if they were approaching the car in front of them as they were decelerating.

BMW has indeed improved the whole traction control/regenerative braking system communication and the i3 performs much better than the MINI-E or ActiveE did when the tires lose traction during regenerative braking. However it now disengages during cornering, and neither of its predecessors ever did this. I can tell by how it's working that it isn't a flaw in my system, it was intentionally designed to do this, perhaps to prevent the thin tires from losing traction while negotiating hard turns. Again, it's not a problem as long as you know it's going to happen and you are ready to use the friction brakes if necessary. I've found it mostly happens while I'm taking a highway off-ramp that circles down under the highway overpass. It seems the speed I'm traveling combined with the sharp, constant turn is too much and the traction control preemptively disengages the regen in an attempt to prevent the loss of traction. I believe this is something the dealers need to communicate to the customer. It can be a safety issue if new i3 owners aren't prepared for it. Just like with the MINI-E and ActiveE, I'm certain there will be customers that believe there is something wrong with their car and will take it to the dealer for service. And just as I'm sure that will happen, I'm sure the service departments won't have a clue what the customers are talking about and will tell them they checked it out and car is fine. Unless the service manager happens to read this post ;)

I haven't had this happen to me, but a couple people have reported it.

Software Bugs and Various Glitches. There have been a number of various software bugs and other issues reported since the car launched here in the US about two months ago. For example, all of the i3s with the range extender option have had their check engine light (CEL) come on sporadically. Evidently there is nothing actually wrong with the engine, it's just a software bug and BMW has just released a patch to stop the light from coming on, but it's still not something you want to see on a new car. I've also heard of a couple people have their onboard charger fail, and a few others report that the car flashed a "Drivetrain Malfunction" warning. In the cases I've heard about, it just cleared itself and the owner was able to take it to the dealer to be checked and there was no problem found. Honestly I did expect there would be some initial glitches, and it's really too early to tell if these are isolated cases or if it's an indication that there are indeed going to be more problems to come. Other than the phantom CEL warning, my car has been perfect so far, but I'll be watching it closely and reporting on what I experience as well as what I hear from other i3 owners as time passes.

Minor Annoyances:
There are a few things that really don't bother me that much, but I know other i3 owners who have complained about these things:

The dangling plastic charge port cap seen here isn't really too high on my list of annoyances, but I have heard quite a few other i3 owners complain about it. I even know a couple that have cut it off.

1) Charge port plastic caps. After you open the watertight charge port door you need to remove a plastic cap before you plug the car in. It really doesn't bother me, but I agree it isn't the best solution. a spring loaded cover that flips over and snaps in place like the ActiveE had would be better. Is this really even needed though?

2) The adaptive cruise control system will sometimes disengage for no apparent reason. When it works, it's really a great feature, but it does have a tendency to disengage by itself. It seems like driving in the rain, in direct sunlight and going under overpasses give it the most trouble. I have used it a couple dozen times now and it has disengaged four times by itself. Not a big issue, but one that BMW will hopefully improve.

3) The "Door Ajar" warning light is very sensitive. If you don't close the doors pretty hard, the door ajar warning light will come on while you are driving. The doors aren't in any danger of opening, I just think the warning trigger is just too sensitive.

4) BMW advertises that for home charging "a maximum charging power of 7.4 kW can be reached".  I have yet to be able to crack 7kW's and usually see my charge rate at around 6.7 kW to 6.9 kW. Sure, this is a minor complaint, but my supply is more than adequate to accommodate at least 7.2 kW, so why won't the car pull it? I've talked to other i3 owners about this also, and 6.9 kW is about the most anybody has seen the car pull.

5) No programmable button on the key FOB to initiate battery and cabin preconditioning. The European i3s have this feature, but for some reason it was left off the US i3s. You can still initiate cabin and battery preconditioning via the smartphone app, but having it on the key FOB is easier. Some people (you know who you are!) have told me it was a deal breaker and wouldn't buy an i3 without it.    

I'm sure I'll come up with more dislikes as time goes on, and I'll continue to post them here. Even considering everything I've detailed here, I'm thoroughly enjoying my i3. I drove it a total of 162 miles today and less than 2 miles was with the REx running. The range extender allows me to really push the range limit without worrying if I'll make my destination. Oh yeah, that reminds me of one more complaint. I want the ability to turn the range extender off if I know I'll make my destination. Twice so far the range extender turned on when I was less than a 1/4 mile from my house and once it turned on while I was pulling up my driveway! I believe the European i3s do allow the operator to turn it off manually, so that's just another feature (sunroof, programmable key FOB, REx hold mode) that we don't get here in the States. Yeah, I know... first world problems. :)