Problems · NHTSA complaints
2012 smart Fortwo problems
Owners filed 8 complaints about the 2012 smart Fortwo with NHTSA between Jul 2012 and Jan 2022. The most-cited component is seat belts (2).
Complaints
8
Filed with NHTSA
Crashes
2
Reported by owners
Fires
0
Reported by owners
Injuries
3
People reported injured
Deaths
0
Reported to NHTSA
Complaints by component
One complaint can cite several components
- Seat belts2
- Electrical system2
- Air bags2
- Exterior lighting1
- Power train1
- Structure1
- Vehicle speed control1
- Engine1
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
Data from NHTSA Complaints API · synced Nov 6, 2026NHTSA vehicle page
When complaints were filed
Does it get worse with age? Complaints per calendar year filed
1
0
1
0
3
1
1
0
0
0
1
View as table
| Model year | Complaints filed per calendar year |
|---|---|
| 2012 | 1 |
| 2013 | 0 |
| 2014 | 1 |
| 2015 | 0 |
| 2016 | 3 |
| 2017 | 1 |
| 2018 | 1 |
| 2019 | 0 |
| 2020 | 0 |
| 2021 | 0 |
| 2022 | 1 |
Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.
Top problems in owners’ words
Verbatim from NHTSA complaints, newest first
Seat belts
2 reports
“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.”
Electrical system
2 reports
“TRANSMISSION WILL GO INTO THREE BARS AND NOT SHIFT ON HIGHWAYS AND PARKWAYS, USUALLY ABLE TO SAFELY DRIVE UNDER POWER TO SIDE OF ROAD SOMETIMES GOES INTO NEUTRAL AND HAVE TO COAST TO SIDE. OCCURS WITH ELEVATED AMBIENT MOISTURE. STARTED AT 32,000 MILES. KNOWN ISSUE, TRANSMISSION HAS A LIMP MODE FOR THIS OCCURRENCE. VERY DIFFICULT TO DIAGNOSE, APPEARS ELECTRICAL IN NATURE. SMART DEALERSHIP WILL NOT ADDRESS.”
Air bags
2 reports2 crashes
“VEHICLE WAS HIT FROM BEHIND AND PUSHED INTO ANOTHER CAR ON INTERSTATE. AIR BAGS DID NOT DEPLOY.”
Exterior lighting
1 report
“TL* THE CONTACT OWNS A 2012 SMART FORTWO. WHILE DRIVING VARIOUS SPEEDS, THE FRONT TURN SIGNAL INDICATORS FAILED TO ILLUMINATE. THE FAILURE OCCURRED WITHOUT WARNING. THE VEHICLE WAS TAKEN TO LOKEY MERCEDES-BENZ (19820 US HWY 19 N, CLEARWATER, FL) WHERE THE FAILURE WAS CONFIRMED; HOWEVER, THE FAILURE COULD NOT BE DIAGNOSED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE, BUT NO ASSISTANCE WAS OFFERED. THE FAILURE MILEAGE WAS APPROXIMATELY 20,000. THE VIN WAS NOT PROVIDED. *TT”
Power train
1 report
Structure
1 report
“TL* THE CONTACT OWNS A 2012 SMART FORTWO. WHILE DRIVING 60 MPH, THE PASSENGER SIDE BODY PANEL DISENGAGED WITHOUT WARNING. THE VEHICLE WAS NOT DIAGNOSED NOR REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 45,100.”
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 6, 2026
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.