7 consumer complaints have been filed with NHTSA for the 2021 BMW X6 M. Click any complaint to view the full owner description.
SERVICE BRAKES, HYDRAULIC,ELECTRICAL SYSTEMJanuary 26, 2026
The contact owns a 2021 BMW X6. The contact stated that while driving at an undisclosed speed, the brake pedal was depressed; however, the vehicle failed to stop as intended. The contact shifted into park while the vehicle was in motion to stop the vehicle. The vehicle was taken to an independent mechanic; however, the failure was not duplicated. In addition, the contact stated that while attempting to start the vehicle, the vehicle failed to start. The vehicle started after several attempts. No warning lights were illuminated. The vehicle was taken to the dealer, where it was diagnosed with starter motor failure. The contact was informed that the starter motor needed to be replaced. The vehicle was not repaired. The contact referenced an unknown recall; however, the VIN was not under recall. The manufacturer was not made aware of the failure. The failure mileage was approximately 49,000.
AIR BAGSNovember 25, 2025
Wiring from knee air bag to module failed. Had to repair wiring from front driver and passenger knee air bags. Wiring had a short to ground. Resulted in a $1600 bill.
ENGINE AND ENGINE COOLING,ELECTRICAL SYSTEMNovember 12, 2025
The contact owns a 2021 BMW X6. The contact stated that upon start the vehicle, the drivetrain message was displayed. Overtime, the contact stated that the vehicle either failed to start or was slow to start while depressing the START/STOP button. The vehicle was taken to a dealer and the starter was replaced; however, a month later, the drivetrain message returned. Additionally, the contact stated that while reversing out of a parking space, the vehicle shut off while in reverse(R). The vehicle was taken back to the dealer and the contact was informed that the crank sensor needed to be replaced. The dealer stated that the part needed to be ordered, and the contact was instructed to return in a few days for the repair. After leaving the appointment, the contact stated that the vehicle failed to start up while in a parking lot and the vehicle was towed back to the dealer. Another diagnostic test was performed, and the contact was informed that the alternator, starter, and battery all needed to be replaced. The vehicle was not repaired and remained with the dealer. The manufacturer was not notified of the failure. The failure mileage was approximately 53,000.
STEERING,SERVICE BRAKESOctober 18, 2025
Unknown
BACK OVER PREVENTION,FORWARD COLLISION AVOIDANCEMay 17, 2024
The automatic parking feature was being used to park in garage the vehicle proceed to back up without stopping and the emergency braking system didn’t engage leading to the vehicle crashing. I could have been injured if the structure of the house didn’t stop the vehicle. If someone had been behind the vehicle they would’ve been killed. The incident was reported to BMW, although the system malfunctioned the driver is responsible for maintaining control of the vehicle.The vehicle is has been repaired but system is still malfunctioning. These problems didn’t exist prior to crash.
Crash reported
NHTSA #11589248UNKNOWN OR OTHERMarch 31, 2023
The AC, air system blows out a bad odor...smell like vinegar, burned plastic and rotten eggs
LANE DEPARTURE,FORWARD COLLISION AVOIDANCEDecember 20, 2020
IF I HAVE MADE THE PURCHASE DEPOSITING 100000 AND THE REST IN MONTHLY PAYMENTS