There are 4 owner-reported air bags & restraints complaints for the 2012 Smart Fortwo in NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
The driver side seat belt mount, which in this case is a steel cable, has mostly broken and frayed rendering it unsafe to drive. In the event of an accident, it would certainly break completely. I only noticed it yesterday while cleaning, the breakage would've happened while driving it. I've contacted mercedes USA, and they tell me that my warranty has run out, they can't do anything. Even though this is a mandatory safety feature that has completely failed from normal use.
DRIVER SIDE SEAT BELT FAILS TO BUCKLE. NOTHING LODGED IN BUCKLE, BUT MECHANISM APPEARS TO BE BROKEN.
VEHICLE WAS HIT FROM BEHIND AND PUSHED INTO ANOTHER CAR ON INTERSTATE. AIR BAGS DID NOT DEPLOY.
TL* THE CONTACT OWNS A 2012 SMART FORTWO. WHILE AT A STOP SIGN, ANOTHER VEHICLE CRASHED INTO THE REAR OF THE CONTACT'S VEHICLE. AS A RESULT, THE CONTACT REAR ENDED THE PRECEDING VEHICLE. THE AIR BAGS FAILED TO DEPLOY. A POLICE REPORT WAS FILED. THE CONTACT SUSTAINED BACK INJURIES, WHICH REQUIRED MEDICAL ATTENTION. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE VIN WAS UNAVAILABLE. THE APPROXIMATE FAILURE MILEAGE WAS 5,200.
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.
Data synced from NHTSA on Sep 8, 2026