Which parts fail
Components named in complaints (fuel pump, injectors, fuel tank, hybrid and EV propulsion).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2006 Chevrolet Cobalt owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2006 Chevrolet Cobalt. The contact stated while standing outside the vehicle a fuel odor was detected. The contact also stated that while driving, there was a fuel odor detected inside the vehicle. The vehicle was not taken to the dealer or independent mechanic to be diagnosed or repaired. The dealer was contacted and the contact was awaiting an appointment. The contact was also informed that the VIN was not under recall. The manufacturer was contacted and made aware of the issue. The manufacturer informed the contact of a fuel pump module replacement coverage under Manufacturer Communication Number: 09275. Future Chevrolet (4811 Madison Ave, Sacramento, CA 95841) was contacted and the contact was still awaiting a callback. The contact related the failure to NHTSA Campaign Number: 09V419000 (Fuel System, Gasoline) however, the VIN was not included. …
The contact owns a 2006 Chevrolet Cobalt. The contact became aware that fuel had been puddling underneath the vehicle. The contact had previously noticed an abnormal gasoline odor inside the cabin of the vehicle. The contact stated no warning light was illuminated. The contact had not taken the vehicle to a local dealer or independent mechanic. The vehicle had not been diagnosed or repaired. The manufacturer had been informed of the failure. The contact researched online and determined that the failure was related to NHTSA Campaign Number: 09V419000 (Fuel System, Gasoline). The failure mileage was approximately 59,410.
The contact owns a 2006 Chevrolet Cobalt. The contact stated that after turning off the vehicle, there was an abnormal fuel odor coming from the vehicle. Upon inspection, the contact discovered severe corrosion on the rear driver's side undercarriage of the vehicle. Due to the rust, the fuel lines started leaking. The local dealer was contacted and informed the contact that the Vin was not under recall. The manufacturer was not notified of the failure. The vehicle was not repaired. The failure mileage was approximately 126,000.
My headlight an blinker quit working new bulbs an all new wiring it it still will not work My trunk button also just stopped working an the fuse is not blown. I even replaced it just to make sure still nothing. Door panel clips won't stay in bought new ones same thing so now my handle is coming apart an my door doesn't want to shut bc it thinks I'm still holding the handle.. Fuel everytime I get gas I have to crank my car a few times and press on the gas before I can get it to go otherwise it just dies on me I've had it looked at they said it was something about how my car does not know when to stop releasing air I think. My blinkers don't turn off unless I do it manually. The seals on my door is no good anytime it rains it's coming inside of my car an since the door panel won't stay on it's coming straight into my car
The fuel tank has an evap leak that somehow breaks on top the tank so it leaks the gas vapors and could potentially start a fire but the part that breaks is a non serviceable part so it can't be fixed without purchasing a whole new gas tank that isn't cheap. My other concern is the infamous grounding issue with the wires on the ground g105 I believe right next to oil filter that grounds the transmission and engine control modules well it shorts at times when driving and suddenly your car dies while driving how scary it could cause a wreak and kill somebody it's a very scary issue that constantly comes back even after trying to re ground it needs to be recalled and fixed it's going to kill somebody and it's a well known issue for this make and model that should have already gotten attention to be resolved.
The contact's wife owns a 2006 Chevrolet Cobalt. The contact stated there was an abnormal fuel odor inside the cabin of the vehicle. While exiting the vehicle, the contact became aware that there was an oil leak underneath the rear end of the vehicle, and the fuel odor was more evident. There were no warning lights illuminated. The vehicle was jerking while accelerating and while driving from being stationary. The vehicle was not taken to the dealer to be diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was unknown.
Last year or so, even before than, I noticed suddle fuel odor smell & noticed few drops by left rear wheel area...it has progressingly gotten worse and now puddles and smells of fuel constantly...all which I traced back to fuel lines by rear exhaust heat shield area where it's very rusty, inline elsewhere around car area...seems to be bad design and or manufacturing issue...also very common I noticed with cobalt saturn Pontiac models sharing same design & platform.. Very dangerous and needs to be corrected by gm!
I began noticing a slight drop in fuel mileage at first. Started smelling fuel while parked and only getting 200 miles to a tank. Noticed the supply and return fuel lines where damp. Dropped the tank and the fuel lines at the pump were cracked a little. I temporarily fixed thos with jb weld but dont expect it to last.
There is a recall for some vin numbers on the 2006 Chevy cobalt (recall # 09V419000). My vin number was not included but the exact recalled part was also defective on my car. I wanted to let you know because there are probably several more vins that should be included in this recall, as my car is proof of that.
Fuel line leaking similar to the recall on 2008-10 Cobalts -- gas puddles or drips from leaking fuel lines near the left rear wheel well, near the exhaust pipe and muffler. The leak is caused by corrosion of the metal fuel lines that are secured to the body of the car by plastic blocks.
Related recalls
Fuel system, gasoline › Delivery › Fuel pump
General motors is recalling certain model year 2006 Chevrolet cobalt and Saturn ion vehicles originally sold in or currently registered in the states of arizona and nevada; and model year 2007 Chevrolet cobalt, Pontiac g5 and Saturn ion vehicles originally sold in or currently registered in the states of arizona, california,…
Remedy: Dealers will replace the fuel pump module free of charge. A special coverage will be implemented in the same time frame for model year 2006 vehicles registered in alabama, arkansas, california, florida, georgia, hawaii,…
Fuel System complaints in other Cobalt years
Frequently asked questions
How common are fuel system problems on the 2006 Chevrolet Cobalt?
NHTSA has 466 complaints about the fuel & propulsion system of the 2006 Chevrolet Cobalt, 20% of the model year's 2,330 complaints. The component named most often is delivery › fuel pump (52 mentions).
Is there a recall for 2006 Chevrolet Cobalt fuel system problems?
Yes — NHTSA recall 09V-419 (fuel pump, Oct 29, 2009). Recall repairs are free at authorized dealers.
At what mileage do 2006 Chevrolet Cobalt fuel system problems start?
Half of the complaints with a recorded mileage happened before about 86,000 miles, and 3% before 25,000 miles.
Is it dangerous?
Owners linked 5 crashes, 5 fires and 3 injuries to fuel & propulsion system problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.