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BMW looking to fix i3 acceleration problem uncovered by Consumer Reports

The BMW i3 has been hailed in some quarters as the future of electric mobility, what with its innovative carbon-fiber-reinforced plastic body and commitment to sustainable materials wherever possible. The modernist little hatch is even available with a 650cc two-cylinder gas engine with 34 horsepower to act as a range-extender for those who want it. However, that optional engine might have a drawback - at least for the moment.
Consumer Reports brought the problem to light when one of its drivers was behind the wheel of an i3 using the range-extender. When the driver attempted to pass another vehicle on a rolling, two-lane road, the BMW suddenly had no power to accelerate - a scary situation. CR started examining the car and found something pretty shocking: After driving at a constant speed for a while without any regenerative braking in range-extended mode, acceleration to 60 miles per hour plummeted from about 9 seconds normally to a staggering 27 to 40 seconds in their testing.
A BMW spokesperson told CR that it knows about the problem and has a fix coming next spring that also works on current models. The upgrade includes a state of charge indicator, a warning about loss of power and uses the car's navigation to boost the battery before driving on rolling terrain. It is not clear if the severe power deficiency will also eventually result in a recall.

2014 BMW 320i

When BMW switched its entry level 3 Series, the 328i, from a naturally aspirated, 3.0-liter six-cylinder to a turbocharged, 2.0-liter four-cylinder, we weren't entirely sure what to think. Sure, from a pure numbers perspective, the new 2.0-liter cooked the old 3.0's goose, delivering more torque at far more accessible engine speeds while boosting horsepower and fuel economy.
While we miss that revvy six-pot, the numbers for the 2.0 were just way too good to pass up. Then we received news of an even less-powerful 2.0-liter 3 Series - the 320i. This was interesting, as it saw BMW delving into a power level previously owned solely by the anemic Lexus IS 250 and its six-cylinder engine.
Could BMW make a sub-200-horsepower sedan that still drove the way we expected a 3 Series to drive? To find out, we borrowed the new 320i for a week of testing.

BMW i3 REx can be hacked to offer more miles, AM radio

If you're a BMW i3 REx owner who's willing to risk voiding your warranty, there's a low-level hack that offers up an interesting question. Which is worth more, an extra 20 miles or so of range from the gas-powered range extender or the ability to listen to local sports, like, for example, the iconic Vin Scully on Los Angeles Dodger broadcasts? The choice might be easy for Dodger fans, but it could be a bit more challenging anyone ready to make a road trip. The i3 REx is considered a zero-emissions vehicle under the odd rules from the California Air Resources Board (an important category for automakers) because the miles provided by the gas-powered range extender are about equal to the single-charge range of the vehicle's battery, Green Car Reports says. Some enterprising folks have figured out how to modify the software to tweak the car's capabilities. That means that instead of being able to put in only 1.9 gallons of fuel at a time into the tank, you can put in 2.4 gallons, allowing for that extra 20 miles of driving range. Additionally, the i3 REx's software suppresses AM radio because of potential electromagnetic interference from the electric drivetrain. But, again, that can be reversed with a few tweaks to the software. We need to give out a warning, though: messing with these sorts of software settings is a good way to void your warranty. So, if you're in LA and thinking about enjoying that Dodger (or, dare we say, Giant) broadcast and a few extra driving miles, make sure to figure in all of the factors. Related Video: Featured Gallery BMW i3 Coupe Concept: LA 2012 View 18 Photos News Source: Green Car Reports Green BMW Electric California warranty range extender software