There are 3 owner-reported engine complaints for the 2011 Smart Fortwo in NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
I WAS DRIVING EASTBOUND IN THE NUMBER 1 LANE OF CALIFORNIA HIGHWAY 24 ABOUT 1/4 MILE BEFORE THE TUNNEL ROAD EXIT. I HEARD A NOISE COMING FROM THE ENGINE ARE OF THE CAR, LOOKED AT THE INSTRUMENT CLUSTER AND NOTICED THAT THE ENGINE LIGHT HAD ILLUMINATED, AND EXPERIENCE A SUDDEN LOSS OF POWER. I PULLED OFF OF THE HIGHWAY AT THE TUNNEL ROAD EXIT AND STALLED ON THE OFF RAMP. I ATTEMPTED TO RESTART THE ENGINE TWICE BY TURNING THE KEY. I SAW SMOKE IN MY REARVIEW MIRROR, EXITED THE VEHICLE, AND SAW FLAMES COMING FROM UNDERNEATH THE VEHICLE. I CALLED 911 AND GAVE THE DISPATCH OPERATOR MY LOCATION. BY THE TIME THE HIGHWAY PATROL AND LOCAL FIRE DEPARTMENT ARRIVED, MY CAR WAS TOTALED. THE ATTACHED PHOTOS TELL THE STORY OF THE DAMAGE.
2011 SMART FORTWO COUPE. RUNNING ROUGH AND SHOWING CHECK ENGINE LIGHT WITH OBD CODE P0302. MERCEDES-BENZ DEALERSHIP FOUND MISFIRE ON CYLINDER #2. FURTHER INVESTIGATION FOUND CYLINDER #2 LEAKING 75%. REMOVED AND REPLACED CYLINDER HEAD WITH A NEW CYLINDER HEAD AS A "GOODWILL REPAIR." THIS PARTICULAR MERCEDES-BENZ DEALER HAS DONE 14 OF THESE REPAIRS TO DATE. THIS APPEARS TO BE A PROBLEM WITH A NUMBER OF THE MITSUBISHI ENGINES USED IN THE CURRENT MODEL SMART FORTWO. *TR
ENGINE CHECK LIGHT CAME ON. NO APPARENT REASON. CAR DROVE OK BROUGHT TO MB DEALER. THEY RUN DIAGNOSTIC. NOTED THAT CYLINDER 3 MISFIRED AT SOME POINT, BUT EVERYTHING IS FINE NOW. CAR WAS IN WARRANTY THEN. AFTER SEVERAL MONTHS CHECK ENGINE LIGHT CAME ON AGAIN. CAR WAS RIDING ROUGH TEMPORARILY. THEN IT WAS OK AND THE LIGHT WENT OFF. LIGHT CAME ON AGAIN AROUND 35000 MILES. BROUGHT TO DEALER AGAIN. CAR WAS DRIVING FINE AT THAT POINT. THERE WAS SOME OCCASIONAL HESITATION IN SHIFTING. WAS INFORMED THAT CYLINDER 3 WAS NOT SEATED PROPERLY AND MISFIRING. I WOULD NEED A CYLINDER HEAD REPLACED COSTING ABOUT $7000. AT THIS POINT WARRANTY EXPIRED. AFTER THE CHECK WAS PERFORMED THE CAR WAS IN WORST CONDITION AND COULD NOT BE DRIVEN. *TR
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