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 2005 Pontiac G6 owners, lightly cleaned up (personal details are redacted by NHTSA).
For several months now my 2005 G6 hesitates and jerks significantly when I push down on the gas pedal from a stopped position. From 0-10 MPH the car takes a significant amount of time to gain enough power to move forward for the level of depression applied to the gas pedal. I've taken the car to several mechanics, including a GM dealer. Not a single mechanic including GM can figure out what the issue is. I called GM to place a complaint, and I stupidly thought with all the GM issues and law suits going on now possibly their assistance as 1) this is a safety issue. 2) my car only has a little over 63K in mileage. I explained to GM that I cannot at this time safely accelerate onto a busy highway, go through an intersection, or accelerate quickly should I god forbid have to. I requested them to investigate further as the dealer could not find issue. …
When I drive my car, a strong odor of gass fills up my car. It is so strong that it gives me a killer headache. I have a gas leak coming from the back of the car. The shop I take my car to have told me that it is more than likely a fuel pump leakage. They have told me that they have had to fix many, many fuel pump leakages on Pontiac g6s. Also, my tail lights have stopped working for some reason. They both stopped working at the same time. The gas leakage seems to leak durring and after I drive it. The tail lights... I had just gotten off of work when I got into my car and the police officer I work with told me they were not working. That same night I got home and locked my car. I went to get something out of it and they were working fine. After a few days I was pulled over again because they had stopped working again. They currently do not work. …
Tl* the contact owns a 2005 Pontiac G6. After the vehicle was driven, a strong fuel odor was present. There was no indication of a fuel leak. The vehicle had to be cranked several times before it would start. The vehicle was not taken to an independent mechanic or dealer for diagnostic testing. The manufacturer was notified of the failure. The contact stated that the failure started approximately six months ago. The vehicle was not repaired. The approximate failure mileage was 71,000. ...updated 07/13/16 updated 08/31/16
Took my car to the GMC. Dealer to get recalls fixed. They also noticed strong gas odor. Inspection stated I had a gas leak at the top of my tank and it was dangerous but no recall on this so almost 300$labor +parts... I called GMC and they said my car had too many miles. And 10 years old. I don't feel like I should have to pay for an issue that is clearly from the manufacturer. Any help or advice please! My car could burst into flames.
I first noticed the smell of gasoline when the car was parked. If it was parked on a slight incline, there was a puddle of gas on the driveway. Because I saw online that many others were having a similar problem, I checked to see if there was a recall...but there wasn't. I finally had the fuel pump replaced because I was afraid of a fire. Will I be reimbursed if there is finally a recall done on this very dangerous issue?
Top of fuel pumps out take gets a hairline crack allowing fuel to leak on top of gas tank and not be visible. Creates a strong odor and fire hazard. If looked up online this complaint is very common and later models warranted a recall. The 2005-6 should also be included but haven't been due to age and labor involved to drop the gas tank due to newer models having easier access to the pump without dropping the tank.
My car is smelling like gas I have a leak and im thinking its the fuel pump leaking. My son is a certified mechanic and he looked at my car. He is the one who also said that is probably the fuel pump.there were recalls on 2006 and up in years on the fuel pump. I have one a year 2005 . I think they need to check on the 2005s for this problem.
After filling up at the gas station there is a strong smell of gas outside and inside of my car until the gas has been ran out a little and it is so strong that my car is not drivable. I have been told that the fuel line to the fuel pump has a crack in it. .. Updated 02/19/15
Friday shortly after returning home from work and parking my car in the garage, I walked outside to retrieve something from the garage and upon opening the garage door, I nearly fell over from the gasoline fumes that I encountered. My entire garage was filled with the vapors of gasoline. I was very concerned but did not see any leaks around my car. I did not dare attempt to start the vehicle for fear of fire. I did not drive my car all weekend. Monday morning I took the car to a mechanic and he discovered the fuel assembly unit had a leak near the fuel arm mechanism leading to the engine. This required replacing the entire fuel assembly unit. The plastic piece should show no signs of wear and tear since it is encased within the fuel assembly unit. This is clearly a flawed design and it should be recalled. …
On September 2014, I purchased a 2005 Pontiac G6 with about 182,000 miles for the purposes of driving me to work. I was not aware or made aware of a strong fuel smell emitting from outside and inside the car at low or high speeds. I drove the car to my local mechanic for inspection a few days later. I was later advised that a fuel pump connector was possibly cracked and leaking gasoline above the gas tank. My mechanic also advised me not to drive my car any further since it posed a fire danger. In addition, GM recalled the 2007-2009 Pontiac G6 vehicles for the same issue but not for the 2005-6 Pontiac G6 cars. My car currently has two recalls which my local GM dealership will fix in the upcoming week. Many customers have complained about the same issue and no recall has been made to address this problem. Why hasn't this issue been recalled with the faulty fuel pumps? …
Fuel System complaints in other G6 years
Frequently asked questions
How common are fuel system problems on the 2005 Pontiac G6?
NHTSA has 33 complaints about the fuel & propulsion system of the 2005 Pontiac G6, 5% of the model year's 679 complaints. The component named most often is delivery › fuel pump (2 mentions).
Is there a recall for 2005 Pontiac G6 fuel system problems?
No. NHTSA lists no fuel & propulsion system recall for the 2005 Pontiac G6, though it has 5 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 2005 Pontiac G6 fuel system problems start?
Half of the complaints with a recorded mileage happened before about 103,000 miles.
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.