There are 3 stored owner reports matching the air bags & restraints leading-label group for the 2021 BMW 4 Series in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 3 of 3 matching reports.
Open the full vehicle complaint log (all categories)The contact owns a 2021 BMW 430I. The contact stated that the front driver’s side seat belt chest strap was shredded. The contact was concerned that the seat belt would not safely secure the driver in a crash. The contact stated that the shredded seat belt strap might have been caused by the seat belt strap touching the seat belt retractor while pulling the seat belt buckle up. The vehicle was taken to the local dealer who indicated that the seat belt needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure, but no assistance was offered. The failure mileage was13,300.
This automobile is designed with a seatbelt assembly which has an arm which reaches out to bring your your seatbelt. See pix. It is made with plastic and glue and is amazingly flimsy. I cannot believe that BMW created such a "cute" but flimsy design. It cannot withstand being used hundreds of time when the seatbelt is used. It broke (see pix). Now a rigid arm with a jagged edge comes out at eye level. Someone is going to become seriously injured!!!! BMW claims that this resulted from misuse and not faulty cheap design and wants me to pay for the repair!!!!!!! This entire assembly needs to be recalled and replaced with some thing sturdier.
The seat belt retractor keeps breaking, dealer fixed it once, broke after two days, dealer did not want to fix again, arguing for over a year, finally they fixed it supposedly, it broke again in less than a week. Dealer refuses to fix the problem saying that they will not cover it, this is a safety issue which scares me as the seat belt does not work well.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Aug 30, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.