The car has lost power on the highway multiple times and gone into Limp mode with no warnings on the dashboard. The Rex engine has failed to start as well. Very dangerous on the highway going 20 mph trying to make the next exit. The car has been back to the BMW dealer multiple times (over 2.5 months at the dealer ) with no repair. They are now offering to take the car in trade. The car is still under the EV warranty in California. Seems they and BMW engineering don’t know how to repair the car and are now putting the burden on the consumer.
NHTSA complaint #11751920 — an unverified report by a vehicle owner.
Sudden unintended deceleration on highway Complete loss of propulsion Thermal warning / overheating Date: May 11, 2026 Mileage: approximately 18,966+ Vehicle: 2014 BMW i3 REx, VIN [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11737189 — an unverified report by a vehicle owner.
This is an electric vehicle. I experienced a sudden loss of all power while traveling on the interstate in heavy traffic. I nearly lost control of the vehicle as it would not respond to my inputs. I had to cross two lanes of dense interstate traffic to get to a safe area to pull over and it was terrifying because the car just suddenly shut down while traveling at highway speeds. The dealership that I had the car towed to did some diagnostic work and said that "EME" had failed. The EME is the main processor that controls all electrical functions in the vehicle. My understanding is that 2019 BMW i3's were recalled due to failures of the EME due to corrosion. How my car was missed in that reacall, I can't ascertain. Perhaps because my particular car has an "S" designation, so it is called an "i3S" and it slipped through the cracks on the original recall. At any rate, the failure was catastrophic; it could have caused an accident and killed me. The car lost all power at highway speeds. Please look into why the i3S was overlooked in the original recall.
NHTSA complaint #11737149 — an unverified report by a vehicle owner.
The contact owns a 2014 BMW I3. The contact stated that while driving at 49 MPH, the vehicle made an abnormal screeching sound and was leaning on the driver's side rear-end. The vehicle was taken to an independent mechanic, where a rear-end inspection was performed, and the contact was informed that no failure was found. The vehicle was not diagnosed or repaired. The contact related the failure to an unknown engine mount bracket recall. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 154,140.
NHTSA complaint #11728191 — an unverified report by a vehicle owner.
BMW Service Bulletin SI B22 04 15 to replace motor mount bolts and other components due to failure in 2016 was done on my vehicle in 2016. BMW has replaced all motor mounts in 2014 and 2015 i3's in Europe. The motor mounts were redesigned for 2016 and newer models. From online forums I see that many of the 2014 and 2015 North American i3 motor mounts continue to fail as they have on my BMW i3. I am reporting this failure in order for NHTSA to review this vehicle for a recall on motor mounts for all 2014 and 2015 USA BMW i3's.
NHTSA complaint #11721513 — an unverified report by a vehicle owner.
While driving my 2016 BMW i3 with Range Extender, the vehicle experiences sudden and complete loss of propulsion at very low state of charge (0–1%). The car abruptly loses motive power, forcing me to pull over, sometimes while in traffic. After sitting for several minutes, limited power may return, but the vehicle often shuts down again, and in some cases the Range Extender engine does not engage at all. This has occurred repeatedly and creates a serious risk of being stranded or hit while merging or driving on public roads. BMW has inspected the vehicle twice (07 Nov 2025 and 13 Jan 2026) and confirmed the loss of propulsion and need to pull over but classified the behavior as “normal” without performing high-voltage battery diagnostics. The failure appears consistent with high-voltage battery voltage collapse under load, causing the battery management system to shut down the drivetrain. This is not normal power limiting — it is a sudden drivetrain shutdown that occurs without warning and poses a significant safety hazard.
NHTSA complaint #11711282 — an unverified report by a vehicle owner.
back in march 2025 my 2014 BMW i3 REX gave out a "Drivetrain Malfunction" error. The car's propulsion died while driving. I was driving in the street on the way home from picking up my chidren from school when the power completely shut off while driving. I had a full battery charge and also had about 44 miles worth of gas to use. I pull over to the side of the road, turn the car off and tried to turn it back on but it wouldnt move. i was about 1 mile from home and was able to get the car towed home using AAA. The error code disappeared the next day and i kept driving the car it felt as if it the problem went away. Fast forward Augist 1 2025, the car once again shut off while in the middle of the street driving. I could not get it back on and once again had to get it towed. Once home it started back up like nothing wihtin a few hours. A week later on August 8 it did it again but this time i was driving on the freeway. I was soo afraid for my life because the car started to slow down as if it was runing out of gas and barely made it to get onto the side of the road away from traffic. Once again the car got towed home i was 4 miles away from home. These occurences continue to happen more frequently now. With each time the car started the error message reappeared and the propulsion died. This is gettting out of hand and becoming dangerous for me.
NHTSA complaint #11680869 — an unverified report by a vehicle owner.
The drivetrain system malfunctioned while increasing from 60 MPH to 70 MPH. The vehicle lost all propulsion mid-journey. This put myself as well as other drivers around me at risk while I coasted to a stop on the freeway. The vehicle's warning system stated: “Drivetrain Malfunction: Stop carefully and turn off engine. Do not continue driving. Call Roadside Assistance.” There are error codes that were considered by the manufacturer's nearest service center. And while certain reduction in efficiency of the High Voltage battery were identified, the vehicle was re-initialized and test-driven multiple times, successfully moving of its own power. Notably, the vehicle's battery capacity was noted to be at 70%, not below the federally-mandated capacity for manufacturer-covered repair.
NHTSA complaint #11629361 — an unverified report by a vehicle owner.
When the vehicle depletes it's battery and switches over to the range extender or the gas engine, the car will suddenly shut off and a drivetrain error appears. This seems to only happen when the car is traveling over 55 mph. This has happened on repeated occasions. If you then leave the car sit for several minutes and then turn it back on, it is driveable as long as it is driven under 55 mph. Since this only happens at higher speeds, it's been extremely dangerous because other cars are also traveling at high speeds and this has happened once on a freeway where the speed limit was 70 mph. If there's no shoulder to guide the car onto when this happens, the car would be disabled on the road because it will not drive again right away. I've taken it in to fix and the mechanic said it was a software update that was needed. However, the problem happened again a few months later. There was no warning before this happened both times it occurred.
NHTSA complaint #11594331 — an unverified report by a vehicle owner.
The vehicle has just over 35000 miles of light normal use as a second family vehicle. It developed a loud grinding noise from the etransmission that quickly progressed to a vibration. It was taken to BMW Seattle where it was diagnosed as a known issue of the main transmission bearings disintegrating due to the effect of the permanent magnet motors on the metal roller bearings. The bearings were quietly modified by BMW for the 2019 model year due to this in an effort to mitigate the problem and subsequently BMW abandoned the permanent magnet motor technology due to this . This information was from the various BMW service advisors. The repair is quoted as $7400 to replece the entire e transmission to the new design. If unrepaired there is a " significant risk the transmission will jam at highway speed causing a loss of control due to rear wheel lockup". Calls to BMW NA about this issue were replied with "BMW is unwilling to assist the customer with this issue." It is unconscionable that a vehicle with 35000m and a 4 year 50 000m warranty would have its transmission disintegrate with the potential of a catastrophic accident under light use due to a known manufacturer defect and BMW would not even attempt to assist their customers when they have the rectification available.
NHTSA complaint #11592432 — an unverified report by a vehicle owner.
Loses power "without warning"; actually, when the REX turns on it automatically mentions that power "could be" lost when the REX turns on. However, that is very understated. In fact, there is nowhere in the owner's manual that raises this issue; doesn't even mention that there could or would be a "warning" if battery is low and REX is being used. Bottom line: The REX cannot keep up with driving. Please refer to: https://www.youtube.com/watch?v=hmn58reGv8k The above is identical to my experience. Especially VERY DANGEROUS when on the interstate highway. I was looking for an exit so that the battery might recharge a bit because I could only go 25-35 mph. Seems like the REX is warming up and not outputting standard power, as expected... It might be that the problem is that the computer is not calculating the correct state of charge and therefore not giving the REX enough time to complete its warm-up cycle.? Or it should kick in earlier than single digit battery strength left. I started recording at 9% SoC and I was expecting this power loss. I found a safe(r) road to do this on with minimal traffic. Fast Forward to 2:59 to see the power-loss happen. The first time this happened I was on the highway, that was not fun. To quote another driver with the same issue (see YouTube earlier), "Power-loss due to low charge should be gradual and with a warning, not this sudden. This makes for a dangerous situation if I'm on the highway or hill. I know that enabling 'hold state of charge' before 7.5% is a 'manual workaround' but that is NOT a fix. HSOC is not even an option on the REX in the USA - you have to unhide the menu via a coding change."
NHTSA complaint #11513467 — an unverified report by a vehicle owner.
I was driving uphill on a winding, narrow highway, California State Route 18, when the range extender kicked in and I had a sudden loss of power. I could not maintain vehicle speed. It was terrifying. I was alone. I didn't know what to do. I turned on my hazard lights and I pulled over every time vehicles came up behind me.
NHTSA complaint #11488682 — an unverified report by a vehicle owner.
The car turned off while driving and presented a "drivetrain" error message. The car lost power but I was able to safely steer to the side of the road. Car was taken to BMW dealer and a diagnostic test was performed. Was informed that the EME (Electric Motor Electronics) Module was bad and would need to be replaced. The car is 5 years old and has 31,700 miles and has never been in an accident. The estimate to replace the EME was $7,000
NHTSA complaint #11436391 — an unverified report by a vehicle owner.
THE LEFT BRACKET FOR THE ELECTRIC ENGINE IS CRACKED AND THE DEALER WANTS SUBSTANTIALLY MORE FOR A REPLACEMENT ONE WHICH HAPPENS TO BE COMPLETELY REDESIGNED FROM A CHEAP PLASTIC PART WHICH EQUIPS MY CAR TO A MORE STUDY AND IMPROVED ONE FOR THE LATEST MODELS OF THE SAME MAKE. AS I DID SOME RESEARCH THE SAME ISSUE WAS SUBJECTED TO A FORMAL SAFETY RECALL IN EUROPE. HERE MY WARRANTY EXPIRED SO THE DEALER WANTS TO CHARGE ME A HEFTY FEE FOR WHAT IS BASICALLY A REPAIR TO A MANUFACTURER'S RECOGNIZED DESIGN FLAW. THIS ISSUE NEEDS TO BE INVESTIGATED AS MANY OWNERS OF THIS CAR WILL NOT REPAIR THIS ISSUE WHICH CAN BE FAILED TO BE IDENTIFIED OR WILL BALK AT THE PRICE TAG OF THE CHANGE. IF THE BRACKET FAILS THE WHOLE ENGINE AND DRIVESHAFT WILL DROP AND INTERFERE WITH REAR WHEEL ALIGNMENT RESULTING IN A POSSIBLE CATASTROPHIC LOSS OF CONTROL. THE REPLACEMENT BRACKET IS ALUMINIUM VS THE ORIGINAL ONE IN PLASTIC SO THEY ARE TRYING TO QUICKLY SWEEP THIS DESIGN FLAW UNDER THE RUG. THERE MIGHT HAVE BEEN CATASTROPHIC CRASHES OF THIS TYPE OF CAR IN THE PAST DUE TO IT BUT CROSSING MY FINGERS IT DIDN'T HAPPEN. THE PICTURES I INCLUDE SHOW WHERE THE REPLACEMENT NEEDS TO HAPPEN. #3 IS WHERE THE CRACK IS AND I ALSO HAVE A VIDEO I CAN SUBMIT IF NEEDED.
NHTSA complaint #11390283 — an unverified report by a vehicle owner.
I CAME OUT OF THE PUBLIC GARAGE WHERE I CHARGED MY 2018 BMW I3'S AT A CHARGE POINT STATION FOR A LITTLE LESS THAN 4 HOURS (ABOUT 47 MILES RANGE), AND SUDDENLY WHEN STOPPED AT A RED LIGHT, A BIG RED ERROR MESSAGE CAME UP ON THE DASHBOARD (DRIVETRAIN SOMETHING....) AND THE CAR STOPPED. I TRIED TO RESTART IT A FEW TIMES AND EVENTUALLY IT STARTED AGAIN AND ALLOWED ME TO GO BACK HOME. I READ A FEW THINGS ONLINE CONFIRMING THAT THERE IS NO WARNING MESSAGE AND THAT THE CAR CAN JUST STOP LIKE THAT AND I'M VERY CONCERNED THAT IT HAPPEN ON A FREEWAY WHEN DRIVING WITH MY KIDS IN IT. THIS IS NOT SAFE!!!
NHTSA complaint #11365847 — an unverified report by a vehicle owner.
WHILE DRIVING THE VEHICLE SUDDENLY JERKED AND LOST ALL POWER WHILE IN MOTION ON A CITY STREET. I CAN'T IMAGINE WHAT WOULD HAVE HAPPENED IF I WAS ON THE FREEWAY WITH TRAFFIC. THE MESSAGE ON THE SCREEN IN MY CAR STATED DRIVETRAIN MALFUNCTION STOP AND TURN OFF ENGINE DO NOT CONTINUE TO DRIVE CALL ROADSIDE ASSISTANCE.
NHTSA complaint #11350127 — an unverified report by a vehicle owner.
I BELIEVE THIS IS A SAFETY ISSUE AND CAN HAPPEN AT ANY TIME WITHOUT WARNING TO ME OR OTHER OWNERS OF SIMILAR VEHICLES PUTTING MY SAFETY AND OTHER'S SAFETY AT GREAT RISK. ON MAY 20, 2020, I WAS STOPPED ON A RED LIGHT AT NECKEL RD TO CROSS HIGHWAY 86 IN IMPERIAL CA. WHEN IT TURNED GREEN, I RELEASED THE BREAK PEDAL AND NORMALLY ACCELERATED. SUDDENLY MY VEHICLE STOPPED IN THE MIDDLE OF HIGHWAY 86 AND PUT ITSELF IN THE PARK POSITION SHOWING "DRIVE TRAIN FAULT" ALARM. IT STOPPED IN THE MIDDLE OF THE CAR'S TRAFFIC AND I WAS NOT ABLE TO SHIFT IT TO NEUTRAL POSITION TO MOVE IT OUT OF THE WAY. WITH VEHICLES TRAFFIC MOVING AROUND ME, I TURN MY CAR OFF AND ON THREE TIMES, WITH ABOUT TEN SECONDS IN BETWEEN OFF AN ON, BEFORE THE ALARM WOULD RESET. ONCE THE ALARM CLEARED, I ABORTED MY SHORT TRIP AND WAS ABLE TO DRIVE IT BACK HOME SAFELY BUT I AM CONCERN THIS MAY HAPPEN AGAIN AT ANY TIME AT HIGHER SPEEDS PUTTING MY SAFETY AND OTHERS' SAFETY AT RISK. I WOULD LIKE TO KNOW IF OTHER HAVE REPORTED SIMILAR ISSUES / COMPLAINS WITH THIS VEHICLES AND WHAT IS BMW DOING ABOUT IT. THANK YOU VERY MUCH.
NHTSA complaint #11325412 — an unverified report by a vehicle owner.
WHEN THE DRIVETRAIN FAILURE LIGHT COMES ON, THE MOTOR FAILS, THEN LOCKS UP IN PARK. YOU CONNOT THEN PUT IT IN NEUTRAL TO GET IT OFF THE ROAD. EVEN THE TOWTRUCK NEEDS DOLLIES TO GET REAR WHEELS OFF THE GROUND. THIS HAPPENED TWICE WHILE STATIONARY, AND SEVERAL TIMES ON THE ROAD. IF I HAD NOT BEEN ABLE TO ROLL TO SHOULDER, IT COULD HAVE CREATED AN ACCIDENT. THERE SHOULD BE A WAY TO GET TO ZNEUTRAL.
NHTSA complaint #11323297 — an unverified report by a vehicle owner.
2017 BMW I3
at 26,680 milesStanton, CACrash1 injured
POWER TRAIN
TL* THE CONTACT OWNED A 2017 BMW I3. THE CONTACT STATED THAT WHILE AT A COMPLETE STOP, HIS VEHICLE ACCELERATED INDEPENDENTLY INTO ON COMING TRAFFIC WITHOUT WARNING. AS THE CONTACT STRUGGLED TO REGAIN CONTROL OF THE VEHICLE, HE STEERED THE VEHICLE INTO A WOODED AREA WHERE HE HIT A TRASH DUMPSTER. THE AIR BAGS DID NOT DEPLOY UPON IMPACT. THE CONTACT SUFFERED A HEADACHE AND INJURIES TO HIS BACK AND NECK AREA. THE CONTACT DID NOT RECEIVE MEDICAL ATTENTION AT THE SCENE. THE POLICE WAS CALLED; HOWEVER, THE CONTACT NEVER RECEIVED A POLICE REPORT. THE VEHICLE WAS TOWED TO BMW OF BUENA PARK (6750 AUTO CENTER DR, BUENA PARK, CA 90621) TO BE INVESTIGATED. THE CONTACT WAS UNABLE TO STATE WHAT THE INVESTIGATION FOUND; HOWEVER, THE INVESTIGATION DID DEEM THE VEHICLE A TOTAL LOSS. THE MANUFACTURER WAS INFORMED OF THE FAILURE AND AGREED TO PAY FOR A RENTAL VEHICLE. THE MANUFACTURER OFFERED NO FURTHER ASSISTANCE. THE FAILURE MILEAGE WAS APPROXIMATELY 26,680.
NHTSA complaint #11321023 — an unverified report by a vehicle owner.
STARTED THE CAR AFTER CHARGING IT OVERNIGHT AND "DRIVETRAIN: STOP CAREFULLY" AND "TRANSMISSION MALFUNCTION" APPEARED ON THE DASHBOARD. THE CAR HAS BEEN COMPLETELY FINE BEFORE THIS.
NHTSA complaint #11306969 — an unverified report by a vehicle owner.