Problems · by component
2009 Chevrolet Cobalt engine problems
42 owner complaints to NHTSA about the 2009 Chevrolet Cobalt cite engine, 5% of all 900 complaints for this model year.
Complaints
42
5% of all complaints
Crashes
5
Reported by owners
Fires
1
Reported by owners
Injuries
2
Reported by owners
What owners say about the engine
Verbatim from NHTSA complaints, newest first
“My car turned off while I was driving and almost caused me to crash into an 18 wheeler. Thank God I turned on my emergency signal and the truck swerved!. I would of died. I was stuck in the middle of the road and luckily some passersby helped me push it into a commercial parking area. I tried to start it again and it wouldn't start. But, when I turn my key into the off position, my car tried starting by itself. It was scary. It was checked by a mechanic, prior to this happening, because the car was hard to start. The mechanic told me to find out if there is a recall. However, I did some research and there was a recall on the ignition switch and fuel pump. The ignition switch was faulty causing the car to turn off while moving and two people died as a result. I entered the VIN # and it didn't show any recalls.”
“The contact owns a 2009 Chevrolet Cobalt. The contact stated that after driving to a local store and turning off the vehicle, the contact then returned to the vehicle however, the vehicle failed to restart. The vehicle was towed to the residence. The vehicle was diagnosed by an independent mechanic. The contact was informed that the fuel level sensor circuit and cam shaft position sensor had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure but provided no assistance. The failure mileage was approximately 153,000.”
“The contact's mother owns a 2009 Chevrolet Cobalt. The contact stated that while his mother was starting the vehicle, the passenger's side air bag made clicking sounds. Additionally, the engine would rev, and the vehicle would shake while idle. The vehicle was taken to an independent mechanic who replaced the fuel filter, spark plugs, and ignition coils; however, the failure recurred. The vehicle was not repaired. The dealer was made aware of the failure but informed the contact that there was no recall associated with the VIN. The manufacturer was not made aware of the failure. The failure mileage was 106,864.”
“FUEL LEAK FROM FUEL LINE IN THE REAR ON VEHICLE. CORROSION TO FUEL LINE. LEAKS BADLY WHEN RUNNING! LONG ENGINE CRANK AFTER SITTING A SHORT TIME. LEAVES PUDDLE OF FUEL UNDER VEHICLE. FUEL SMELL ALL THE TIME.”
“KEEP SMELLING FUEL VAPORS ON THE REAR LEFT SIDE OF THE VEHICLE. CHECKED THE FUEL FILTER AND IT SEEMS TO BE WORKING DESPITE MY GAS MILEAGE GETTING WORSE AND WORSE. I'VE BEEN BURNING A FULL TANK OF GAS GOING LESS THAN 250 MILES WHEN I SHOULD GET NEAR 400 MILES A TANK.”
“THE VEHICLE OVERHEATED AND SHUTDOWN WHILE TRAVERSING RT 287 NEAR BOONTON AT SPEEDS AROUND 65. I COASTED OFF AN EXIT AND CAME TO A STOP AT PARK AVE AND WOOTTON ST. WHILE I WAS WAITING FOR MY VEHICLE TO COOL DOWN SO I COULD EITHER FIX/CONTINUE DRIVING, IT HAD BECOME APPARENT THAT THE ENGINE COMPARTMENT HAD STARTED TO COMBUST. NOTICEABLE BY THE SOUND OF THE FIRE. THAT LEFT ME RUSHING TO EMPTY OUT THE VEHICLE OF BELONGINGS IN THE MIDDLE OF THE ROAD BEFORE THE VEHICLE COMPLETELY ENGULFED INTO FLAMES. NOTE THAT PRIOR TO THE ENGINE OVERHEATING ABSOLUTELY NO WARNING LIGHTS NOR INDICATORS HAD TURNED ON. WHEN VEHICLE OVERHEATED THE TEMPERATURE LIGHT TURNED ON AND THAT WAS ALL UNTIL THE VEHICLE WAS ACTUALLY ON FIRE AND HAD SHUT ITSELF OFF. *TR”
Showing 6 of 42 reports. Read every report on NHTSA.gov.
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 10, 2026NHTSA vehicle page
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.