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 2007 Chevrolet HHR owners, lightly cleaned up (personal details are redacted by NHTSA).
Fuel leak coming from the Left (Drivers Side) of the vehicle in the area of the rear wheel. There was a strong odor of fuel, Fuel was observed dripping to the ground under the vehicle in front of the Left rear wheel. This condition was observed only when the vehicle was running and in park. The condition does not seem to happen when the vehicle is off and not running. No repair has been made yet , vehicle can be inspected in its current condition. This is a severe safety concern of ignition/explosion due to a fuel leak; risk of property damage or even death. This problem has not been addressed yet to a dealer or local mechanic as of yet . Failed component has not yet been inspected by GM, Police or insurance. No warning lamps or messages were illuminated on dashboard, prior to failure, vehicle did have some difficulty starting, possibly due to this problem, but it did start.
My 2007 HHR (I also hve a 2008 with the same issue as this) was being configured with replacement front seats and after completion the mechanic/installer informed me that there was a strong gas leak on the driver's side. Upon looking at the car a very noticeable puddle of gas was on the ground. I had the car moved to my home and it is currently unable to use due to the gas leak. This is ridiculous. Everything I have read points to Chevy cheaping out and not using non-corroding metal lines or nylon and the proximity of the heat shield which traps the moisture and corrodes the fuel lines. This REALLY needs to be recalled at Chevy's expense as it is a manufacturer's error. I have no idea if a prior situation had been addressed by the previous owner (commercial computer repair shop).
Notice a gas smell coming from the car when I would get out of the car after driving it . but could not find the source of the smell at first . Then one day I was parked on a black Asphalt payment and seen a wet spot on the payment I then looked under and seen a small wet spot on the protector where the gas line run through on the left side near the lower rear door wear it opens up I then made a call to my GM car dealer ship to see if it is under warranty or a recall but they said no recall for the Fuel lines that when i looked up if other people are having the same problem . And found over 614,000 having the same problem . Note I am waiting on the parts from my dealer so they can fix it which is over $900.00 I am paying for it .
The contact owns a 2007 Chevrolet HHR. The contact stated while her aunt was driving at an undisclosed speed, there was an abnormal gasoline odor inside the vehicle. After a visual inspection, it was discovered that there was fuel leaking from the rear of the vehicle. No warning lights were illuminated. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. After investigating the failure, the contact related the failure to a past NHTSA investigation but was unable to provide specific information. The manufacturer was notified of the failure, and a case was filed. The failure mileage was unknown.
Fuel line leak. My fuel line has cracked in multiple places and needs to be replaced entirely. The leak was consistent, with a constant stream leaking out when in operation and for several minutes after stopping the engine. The odor of gasoline was strong from inside of the vehicle when in operation and large puddles of gas were visible on the ground afterwards when I first noticed the issue. My repair quote is about $500 to get the line replaced entirely.
The contact owns a 2007 Chevrolet HHR. The contact stated that there was an abnormal fuel odor coming from the vehicle while parked in the garage. Upon inspection, the contact stated that the fuel line on the passenger's side was leaking. The contact called the dealer and the manufacturer and was informed that the vehicle was not under recall. The vehicle had yet to be repaired. The failure mileage was unknown.
Car has developed a fuel leak once again in the rear of the vehicle. this is the second time a fuel leak has been noted. the first time the mechanic replaced a portion of the line that had corroded and was leaking fuel near the driver rear tire. now the leak is in another section of the original pipe near the fuel tank. this is poor quality and engineering.
Body clips holding fuel line causing rusting at these points. Leaking fuel from body clip in front of driver's side rear tire. Based on caked on debris (mud like consistency), it has been happening for a while but wasn't leaking to driveway due to disuse of the vehicle. This has commonly happened on 2008-2010 HHRs and Cobalts too.
The fuel line on the left back side of the car (back drivers side) was leaking fuel when it was in parking or sitting and idling. Noted fuel smell when car started up and was idling, car was taken to independent mechanic, fuel line was broke in 2 places. It was broke close by the wheel are and the other spot was back by the exhaust
Fuel line corrosion. fuel is leaking from fuel lines under the car in the rear. it appears all HHR are experiencing similar issues why is the 2007 model year excluded from the recall if built the same as other model years. the first occurrence was February 2019 a portion of the line was replaced and now again.
Fuel System complaints in other HHR years
Frequently asked questions
How common are fuel system problems on the 2007 Chevrolet HHR?
NHTSA has 51 complaints about the fuel & propulsion system of the 2007 Chevrolet HHR, 7% of the model year's 726 complaints. The component named most often is delivery › fuel pump (1 mentions).
Is there a recall for 2007 Chevrolet HHR fuel system problems?
No. NHTSA lists no fuel & propulsion system recall for the 2007 Chevrolet HHR, though it has 4 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2007 Chevrolet HHR fuel system problems start?
Half of the complaints with a recorded mileage happened before about 130,000 miles, and 3% before 25,000 miles.
Is it dangerous?
Owners linked 0 crashes, 1 fire and 0 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.