2021 BMW 3 Series
Problems, recalls and owner-reported issues
Electrical system is the leading concern among 33 owner complaints filed for this model year. This is the 17th highest complaint count among 21 3 Series model years with reports.
Of the 2021 reports, 1 involved a crash and 3 involved a fire. 2 people were injured.
What owners report most often
Recalls and investigations
No safety recalls on file.
Representative owner complaints: air bags
4 reports, newest first. Show all
Air bags, Jul 17, 2026
The contact owns a 2021 BMW 330I. The contact stated that while entering the vehicle, there was an audible alert heard, and a red air bag light was displayed on the instrument panel. The vehicle was taken to the dealer, where it was diagnosed with a failure in the driver’s side knee air bags. The air bags were replaced, and the airbag module was reprogrammed. The manufacturer was notified of the failure. The failure mileage was 30,868.
Air bags, Other or unspecified, Feb 8, 2025
My car has ver been wrecked or received any damage to any part of it. While driving to work the following warning popped up on screen. RESTRAINT SYSTEM WARNING, functionality of the airbags, seatbelt tensions, belt force limits reduced.
Air bags, Service brakes, Forward collision avoidance, Jan 1, 2025, crash
Going into a parking spot. Applied brakes, then the car did not brake, then it accelerated hitting a Jeep and finally stopped when the driver side front hit a parking barrier and then the air bags deployed. Sudden unintended acceleration was the cause of this accident. Car was totaled.
Electrical system, Air bags, Aug 5, 2022
Message on Console - " Passenger Restraint system malfunction ". Took vehicle in for Repair; BMW Dealership "thinks" it may be a wiring harness electrical short. They evidently need to discuss problem with BMW Corporate to figure out to properly diagnose problem and how to repair. My husband and I are very concerned about driving this car even after it may be "so called" repaired. We are concerned that if an accident does occur, and one or more of the airbags do not deploy; there may be serious injury or death to myself, my husband, grandkids, or other passengers.