Problems · NHTSA complaints

2014 BMW I3 Rex problems

Owners filed 22 complaints about the 2014 BMW I3 Rex with NHTSA between Jun 2014 and Mar 2023. The most-cited component is power train (11).

Complaints
22
Filed with NHTSA
Crashes
1
Reported by owners
Fires
1
Reported by owners
Injuries
0
People reported injured
Deaths
0
Reported to NHTSA
01 —By component

Complaints by component

One complaint can cite several components
  1. Power train11
  2. Engine7
  3. Fuel/propulsion system6
  4. Electrical system5
  5. Steering3
  6. Vehicle speed control3
  7. Electronic stability control (esc)2
  8. Seat belts2
  9. Wheels1
  10. Equipment adaptive/mobility1
  11. Air bags1

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.

Data from NHTSA Complaints API · synced Nov 10, 2026NHTSA vehicle page
02 —Trend

When complaints were filed

Does it get worse with age? Complaints per calendar year filed
View as table
Model yearComplaints filed per calendar year
20146
20155
20163
20173
20180
20194
20200
20210
20220
20231

Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.

03 —Owner reports

Top problems in owners’ words

Verbatim from NHTSA complaints, newest first

Power train

11 reports1 crash
“THE CAR, WHILE DRIVING ON A 2 LANE ROAD, CEASED IT OPERATION ANNOUNCING IT HAD DRIVE TRAIN FAILURE. LUCKILY I WAS SLOWING FOR A LIGHT, AS THE STEERING AND BRAKES ALSO BECAME UNRESPONSIVE. THE CAR COULD BE MANUALLY TURNED OFF (THE REMAINING FUNCTIONS AND POWER OFF). IT THEN COULD BE TURNED BACK ON AND DRIVEN. IN OTHER WORDS, THE CAR DECIDED TO GO OFF LINE WHILE IN A STATE OF ENGAGEMENT WITH THE ROAD AND THE DRIVER.”
Owner complaint to NHTSAFiled Apr 3, 2019Power train, Electrical system, Electronic stability control (esc)ODI 11193570

Engine

7 reports
“THE REX (RANGE EXTENDER) ON MY I3 DOES NOT TURN ON, AT RANDOM, WHEN THE BATTERY LEVEL OF THE VEHICLE GETS TO A POINT THAT IS LOW ENOUGH FOR IT TO TURN ON. WHEN THIS HAPPENS, THE VEHICLE EXPERIENCES A SUDDEN AND VIOLENT LOSS OF SPEED WITH NO WARNING. THIS HAS, ON MORE THAN ONE OCCASION, NEARLY CAUSED AN ACCIDENT WHILE IN TRAFFIC. THE BMW DEALERSHIP HAS CONFIRMED THIS IS AN ISSUE IN MY VEHICLE AND HAS SUCCESSFULLY BEEN ABLE TO REPRODUCE IT ON MORE THAN ONE OCCASION. IT HAS BEEN 'FIXED' ON MORE THAN ONE OCCASION AS WELL. THE VEHICLE STILL EXPERIENCES THIS ISSUE INTERMITTENTLY WITH NO WARNING. THE DEALERSHIP IS NO LONGER ABLE TO REPRODUCE THIS ISSUE WHEN TAKEN IN FOR SERVICE. THE DEALERSHIP HAS NOW TAKEN A STANCE THAT THE VEHICLE VIOLENTLY LOSING POWER AND SPEED (AS IF THE BRAKES HAVE BEEN APPLIED HEAVILY) IS "OPERATION NORMALLY FOR CONDITIONS" AND "NO ACTIONS TAKEN" AND ADVICE THAT THIS IS AN ACCEPTABLE AND KNOWN AND HAVE "ADVISED CUSTOMER OF LIMITATION OF DRIVING ON THE REX WITH TOO MANY CUSTOMER DEMANDS..." THE VEHICLE HAS EXPERIENCED THE REX NOT TURNING ON AND LOSING POWER WHILE IN MOTION AND ON THE HIGHWAY AND SURFACE / LIGHT COMMERCIAL STREETS AT ALL LEVELS…”
Owner complaint to NHTSAFiled Feb 8, 2019Electrical system, Engine, Fuel/propulsion systemODI 11175779

Fuel/propulsion system

6 reports
“I TEST DROVE A BMW I3. I GOT INTO TROUBLE BECAUSE THEY FORGOT TO CHARGE IT UP COMPLETELY WHEN I DROVE IT. ALMOST DIED. CONSUMER REPORTS DESCRIBES IT ALL BETTER THAN I CAN: "A NEW LAWSUIT ALLEGES THAT BMW I3 ELECTRIC CARS CAN SUDDENLY SLOW DOWN WHEN THEIR BATTERY POWER IS LOW, POTENTIALLY PUTTING PASSENGERS IN DANGEROUS SITUATIONS. FILED TUESDAY IN U.S. DISTRICT COURT IN LOS ANGELES, THE CLASS-ACTION SUIT ALLEGES THAT THE I3'S 'RANGE EXTENDER FEATURE ... DOESN'T PRODUCE ENOUGH POWER TO PREVENT A DRAMATIC DECREASE IN THE VEHICLE'S PERFORMANCE. AS ALLEGED, IF THE CAR IS UNDER ANY KIND OF SIGNIFICANT LOAD (SUCH AS GOING UP A HILL, OR LOADED WITH PASSENGERS), THE SPEED OF THE CAR WILL DRAMATICALLY DECREASE AS THE BATTERY CHARGE DIMINISHES,' ACCORDING TO A PRESS RELEASE FROM PLAINTIFF ATTORNEY JONATHAN MICHAELS OF NEWPORT BEACH, CALIF." -- CONSUMER REPORTS MAGAZINE REPORTS.”
Owner complaint to NHTSAFiled May 20, 2016Power train, Engine, Fuel/propulsion systemODI 10869984

Electrical system

5 reports1 fire
“The contact owns a 2014 BMW I3 Hybrid. The contact stated that after charging the vehicle overnight the next morning the vehicle climate control was activated and moments later smoke was present inside the vehicle coming from the front passenger side air vent. After exiting the vehicle flames were seen coming from the front passenger side air vent and the vehicle was quickly engulfed in flames. The fire department was called to the scene and extinguished the flames. The vehicle was destroyed and later towed away. A fire report was taken at the scene. The manufacturer and local dealer were notified of the failure. The manufacturer later had the vehicle examined and informed that the fire was caused by a loose bolt used to secure the 12V battery. The failure mileage was 40,000.”
Owner complaint to NHTSAFiled Mar 24, 2023Electrical systemFire reportedODI 11513646

Steering

3 reports
“ASSISTED STEERING IS WORKING INTERMITTENTLY AND INCORRECTLY IDENTIFYING STRAIGHT. HAPPENS OCCASIONALLY WHEN DRIVING, CAUSING DRIVER TO HAVE TO ADJUST STEERING DIRECTION. SAFETY ISSUE THAT COULD LEAD TO ACCIDENTS.”
Owner complaint to NHTSAFiled Apr 3, 2019SteeringODI 11193670

Vehicle speed control

3 reports1 crash
“I BOUGHT BMW I-3 IN 9/14. IT RAN FINE UNTIL LAST WEEKEND IN NOV. ON SAT. 11/29/14 WE WERE DRIVING ON I-5 NORTH AT ABOUT GORMAN EXIT CAR WENT ON GAS EXTENDER AND ALL OF SUDDEN SPEED DROPPED FROM 60-65 MILES TO 30 MILES AND BELOW AND WILL NOT GO FASTER THAN THAT ON FREEWAY DESPITE ME FLOORING THE GAS PEDAL. WE TOOK NEXT EXIT OF FRAZIER PARK DRIVING IN RIGHT MOST LANE WITH HAZARD LIGHTS ON AND ALL THE WAY UPTO PINE MOUNTAIN CLUB SAME THING HAPPENED. WE CHARGED THE CAR OVERNIGHT TO FULL CAPACITY AND DROVE BACK TO PORTER RANCH NEXT DAY. I WENT TO MY WORK ON 11/30/14 LATER IN AFTERNOON AND COMING BACK FROM PANORAMA CITY TO PORTER RANCH AGAIN CAR CAME ON GAS THIS TIME AT THE RAMP FROM I-405 NORTH MERGE WITH 118 WEST AND THIS TIME CAR COMPLETELY STOPPED ON THE RAMP IT WAS AT ABOUT 3.45 PM IT WAS RAINING IN THE VALLEY. I WAS SO AFRAID THAT SOMEBODY WILL HIT ME FROM BACK. FORTUNATELY ENOUGH AFTER LONG-LONG FEW MINUTES I WAS ABLE TO START MY CAR AND TOOK NEXT EXIT ON 118 WEST (HAYVENHURST) AND DROVE BACK HOME ON STREET WITH HAZARD LIGHTS ON IN THE RAIN. SEEMS, CAR GOING ON GAS EXTENDER ON FREEWAY IS A"DEATH TRAP". I DONOT REMEMBER ANY BODY WARNING US OF THAT PRIOR TO…”
Owner complaint to NHTSAFiled Jan 16, 2015Vehicle speed control, Engine, Fuel/propulsion systemODI 10676147
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 10, 2026

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.