Most common 2004 Porsche 911 GT3 problems
Share of the 27 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Porsche 911 GT3 complaints by model year
Best 911 GT3 years: 2014, 2010, 2022. Years to avoid: 2007, 2004. Compare all years →
NHTSA defect investigations
Federal safety investigators have looked into a possible defect involving the 2004 Porsche 911 GT3:
Rapid coolant loss
On April 26, 2013, the Office of Defects Investigation (ODI) opened PE13-009 to investigate 10 complaints alleging incidents of sudden coolant loss while traveling on public roadways in certain model year (MY) 2001 through 2007 Porsche 911 vehicles.The complaints alleged that pipe ends joined by epoxy to certain cooling system components may fail suddenly and separate, resulting in large volumes of coolant…
What 2004 Porsche 911 GT3 owners say
Engine & cooling all 26 →
While driving the car on track, a coolant fitting broke loose and dumped all the antifreeze down onto the track surface. A vehicle on track behind me ran over the antifreeze, lost control and skidded off the track. The driver of the other car wasn't injured and there didn't appear to be much damage to his car, except perhaps some scuffing of the paint on his front bumper. The fitting that came loose is one of 8 fittings that Porsche glued into place when they originally built the engine of my 04 GT3. When the glue gets old it lets go, and that's what happened to me. …
The car was being driven when suddenly the coolant system failed and coolant spilled from under the engine causing my car to skid out of control. The coolant also posed a hazard to other cars on the road due to the extremely slippery nature of the liquid. The car had to be towed to an independent mechanic. The coolant lines had to be replaced and welded rather than the epoxy glue that was used in the original coolant fittings. Porsche dealerships would only use epoxy to seal the fittings which would only eventually lead to another failure.
Transmission & drivetrain
I was driving around a corner about 40 MPH when the car suddenly spun around. I then saw steam coming from the engine. Upon further inspection there was coolant on the ground. One of the coolant fittings had come completely loose, and all the coolant had leaked out. The only real fix is to weld all the coolant fittings. There are 9 of them and the engine has to be removed to do the welding. It cost me $2500 to fix this defect. This is a safety issue as I was lucky I did not hit any one or any thing. Just pure luck. When you dump large quantities of slippery coolant on to the rear tires it is just a matter of time before someone is killed. This problem is so prevalent that most race tracks won't allow a 996 or 997 GT3, gt2 or turbo on the track until the coolant lines are fixed.
I had pro-active repairs performed on my 2004 Porsche GT3 coolant system due to known issue of coolant pipes separating from the engine. I had the repair performed because I was afraid of losing control of my vehicle (it is my daily driver) or causing a crash behind me. The repairs cost me $3900 + ca state tax (7.75%) for a total of: $4200+.
2004 Porsche 911 GT3 engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 3.6L 6-cyl | 6-speed manual | RWD | 14 / 21 / 16 |
EPA ratings. Class: Sports car.
Frequently asked questions
Is the 2004 Porsche 911 GT3 a good car?
Based on 27 owner complaints filed with NHTSA, the 2004 911 GT3 rates use caution: 3.8× as many complaints as a typical year of the 911 GT3 at the same age. It is one of the 911 GT3 years we suggest avoiding. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2004 Porsche 911 GT3?
The engine & cooling — 26 complaints, 96% of all complaints for this model year, most often about cooling system. Next are the transmission & drivetrain (3) and fuel & propulsion system (1).
How many recalls does the 2004 Porsche 911 GT3 have?
NHTSA lists no recalls for the 2004 Porsche 911 GT3. You can still confirm with your VIN using our VIN recall check.
What are the best and worst years of the Porsche 911 GT3?
The best years by complaints, compared at the same age, are 2014, 2010 and 2022. Years to avoid or approach with caution: 2007 and 2004. See the full Porsche 911 GT3 years comparison.
At what mileage do 2004 Porsche 911 GT3 problems happen?
The median mileage reported in complaints is about 31,000 miles; 89% of problems with a recorded mileage started before 50,000 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.