There are 50 owner-reported fuel system complaints for the 2008 Chevrolet Cobaltin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
The fuel line is leaking fuel on the drivers side near the passenger door. The leak is to the point where it is pooling under the door on the ground.
The gas lines rusted out and the fuel pump is pooring gas out of it. I just bought the car 2 weeks ago smelled gas hit u set the car it was pouring out. I was going to fix it my self then while looking up the parts I ran across the fact they recalled both parts but not for my vin . What can I do. I'm gonna catch on fire
Gas Line corroded near Driver rear wheel due to design of gas line bracket/shield. A bit of research finds that this is not an uncommon occurence and is solely based on the poor design of the shield. Gas leaks on driveway and smell of raw gasoline promoted the finding of this issue. It required complete replacement of gasl line and a total of over $1,000 in total cost.
2008 Chevy Cobalt has become unsafe to drive as it is leaking fuel out the bottom of car
Fuel lines have developed a leak near exhaust in rear of car. The line has rusted at the part that attaches line to the under body of the car
Fuel lines corroded, very dangerous, had to replace at a high cost to me.
Vehicle has a fuel leak from rear of vehicle. Smells of fuel in cabin. Found shields wet with fuel. Seems there should be some recall on this. This is the 2nd cobalt I've owned with the same issue.
I have a major fuel leak in a fuel line close to the drivers side rear wheel . It's so bad that it was leaving a line of gas on the road as I drove. It smelled of gas a few days prior but I was unable to tell where it originated from.
The contact owns a 2008 Chevrolet Cobalt. The contact stated that the vehicle was leaking fuel on the passenger’s side in front of the rear tire. The contact stated that the fuel odor was also inside the cabin of the vehicle while driving. The check engine warning light was illuminated. The contact had taken the vehicle to an independent mechanic and was informed that the fuel line had failed and needed to be replaced. The vehicle had not been repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 170,000.
The fuel lines on this 2008 cobalt have rusted out and leaving a visible fuel leak puddle after parking. The leak occurs in front of the driver side rear wheel. This area has a heat shield over the fuel line underneath which traps moisture and road salt. This leak has caused me to park my vehicle outside as a safety precaution and not drive it. The leak is near the exhaust which is a large safety risk in my opinion. I am taking to the dealer to have them confirm and quote out repair cost.
I have to replace my fuel lines due to them rusting out over the left rear wheel well. I noticed a distinct smell of gas for a couple of rides to or from work. After a couple of rides, the smell was very strong and I happened to notice the gas dripping down under the car upon inspection. It was taken to a auto repair shop where I was told that this was a serious hazard and the gas lines would have to be replaced costing me $650. The mechanic said that the lines has rusted causing the leak. He also mentioned that this was a common problem with the 2008 chevy cobalt.
The contact's sister owns a 2008 Chevrolet Cobalt. The contact stated that while the vehicle was parked or being driven, there was a fuel odor detected. The vehicle was taken to an independent mechanic and diagnosed with Code: P2270. Additionally, there was a leak in the fuel pump. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 187,000.
I can smell a gas leak inside and outside of car just bought car for girlfriend don't want it to catch fire and kill her and daughter baby in car
The fuel line rusted through and were leaking gas right next to the exhaust pipe! This should not happen!!! I’ve never had to replace fuel lines due to rust on any vehicle I’ve ever owned!!! Inferior metal and or poor design had to contribute to this! Thank God the car didn’t start on fire or blow up. My friend has a 2009 Cobalt and had the same problem!!! It cost me $1478.79 to repair this defect!! No warning other than the terrible gasoline odor!!! Please do something about this before someone is killed!!!
The contact owns a 2008 Chevrolet Cobalt. The contact stated while the vehicle was parked, he noticed gasoline was leaking from underneath the vehicle. There were no warning lights illuminated. The contact was able to drive the vehicle to his residence. The vehicle was not diagnosed nor repaired by an independent mechanic or dealer. The dealer and the manufacturer were not notified of the failure. The approximate failure mileage was 200,000. The VIN was not available.
Fuel line leaking in front of REAR LEFT tire. Looks to be due to rust causing the leak
Fuel leaking from body near left-rear wheel well.
There is a fuel leak with dripping towards the back of the car. I noticed that there is a current NHTSA investigation into such leaks so wanted to let you know of another example.
Began smelling gas while i was driving, took to mechanic to get checked. fuel line was cracked at the fuel pump. had to replace whole assembly.
The fuel system has developed a small leak, for now near the left rear tire. I cannot pinpoint the exact location of the leak due to the heat shielding around the lines. My concern is the proximity of the fuel leak to the exhaust system and potential fire hazard. A dealer has not looked at my car, however I have performed maintenance on enough vehicles and aircraft to know when there is a fuel leak. There are no warning lights associated for the leak thus far, there is a tendency for the the vehicle to need to prime itself by cranking in the morning or in cold temperatures.
Showing 1–20 of 50 complaints
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 Apr 26, 2026