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What 26 owners told NHTSA about the 2021 BMW 5 Series Hybrid Sedan Phev
These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.
2 of 26 complaints match · Transmission & drivetrain · clear filters
Jul 10, 2026Transmission & drivetrainElectrical systemEngine
Starter engine failure. Car failed to start multiple times. Major safety hazard that can cause a short circuit, melt wiring harnesses, and spark an engine bay fire posing an immediate threat to life. Problem was inspected and confirmed by a dealer. Multiple waring lamps and messages appeared. Dealer report stated: STARTER MOTOR FAULTY. ENGINE ELECTRICAL SYSTEM CONCERN: C/S: REPEAT START ATTEMPT INTERMITTEN WARNING LIGHTS. Please issue recall for the safety of all drivers.
NHTSA ODI 11749530
Mar 25, 2026Transmission & drivetrain
The contact owns a 2021 BMW 540I. The contact stated that while driving at an undisclosed speed, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. There was an abnormal sound coming from the vehicle before the vehicle lost motive power. No warning lights were illuminated. The contact stated that the vehicle failed to respond while in drive(D) or reverse(R). The vehicle was towed to the dealer, where it was diagnosed with a driveshaft failure. The contact was informed that the driveshaft needed to be replaced. The vehicle was not repaired. The contact referenced NHTSA Campaign Number: 21V046000 (Power Train); however, the VIN was not associated with the recall. The manufacturer was made aware of the failure. The contact was advised to contact the NHTSA Hotline to report the failure. The failure mileage was approximately 66,700.
NHTSA ODI 11727007
Working with the data? Download all 26 complaints as CSV · fetched from NHTSA July 19, 2026