Engine complaints by model year
Which parts fail
Components named in complaints (engine, cooling system, oil leaks, timing chain, exhaust).
Mileage when the problem started
What owners report
Purchased vehicle from Porsche dealer on jan 2 2017 and operated it 1600 miles before it blew a coolant fitting and expelled coolant all over the road , rear tire, and rear of car. I was on a busy interstate on ramp and heard the belts squeal and saw steam in the rear view mirror. I could have very easily lost traction if there were no cars ahead of me going slow. Luckily was able to pull over immediately and turn the car off before causing engine damage. No one behind me lost traction in the slick coolant fortunately . Extremely dangerous condition that could easily cause a serious accident. Had vehicle towed to selling dealer 3 days out of warranty and received an estimate of $5200 to repair a coolant hose. Offered a 15% discount, then an additional $1000 off. I researched the common coolant fitting issue where the epoxied fitting comes loose or one of the plastic fittings break. …
I purchased this vehicle listed above 2007 Porsche 911 Turbo on Monday September 15th 2014 from carlstadt new jersey. I began to drive the vehicle back to where I currently live in summerville, sc. Approximately 30 minutes into the drive a light came on in the gauge which said coolant failure. I immediately pulled the vehicle over and turn the car off. I opened the rear hatch where the engine is housed to reveal steam pouring from the back of the car. I called aaa to have the car towed to the nearest Porsche dealership off the new jersey interstate which happened to be ray catena Porsche of edison new jersey. The dealership has verified that indeed it was a coolant failure which happens on models with gt1 engine blocks including my vehicle above. The coolant failure resulting in me almost losing control of the vehicle and colliding with another vehicle. …
After 1 hour of slow 880-n highway stop and go driving in traffic, a large column of steam was observed coming from rear driver side of vehicle while exiting interstate. Immediately observed huge coolant puddle developing on freeway offramp, and alerts on dashboard gauges ("check coolant level"). Upon stopping the car it was observed one of the coolant hoses leading from the water pump had come loose. These are hose fittings which are epoxied into the aluminum water distribution system which come loose over time after the epoxy becomes brittle with age. The engine deposited its entire coolant system quantity rapidly onto the exit offramp of the highway which May potentially cause a crash. This is an extremely well documented issue affecting gt1 block engines made by Porsche in the 996tt, 996 gt2, gt3, and 997 tt vehicles.
At a driver education event in kent, wa, a Porsche Turbo had a failure in the coolant fittings that caused the car to dump all of its coolant on the pavement. I was behind the car in a Porsche gt3 and upon driving over the coolant lost traction and totaled my car. The speed of the Turbo at the time of failure was approx 90 MPH, the car continued to accelerate down the straight-away after the failure but stopped after realizing the car was smoking. This is a common issue with the 996 series, more commonly in the gt3 than the Turbo. This is well documented in forums such as rennlist.com. Http://forums.rennlist.com/rennforums/showthread.php?t=679777&referrerid=108168. I have heard of a pca chapter that has required that cars on the track run with water wetter or fix this issue with getting the fittings welded. …
I was driving my vehicle down the highway while accelerating when I felt the car squirm and noticed a large cloud of smoke billowing from the rear of the vehicle. I pulled over and identified the issue as a catastrophic coolant leak from the engine area (rear) of the vehicle. I had the vehicle transported home and then to a repair shop where they identified the problem as a coolant line that became separated from the engine block. It was explained to me that Porsche, from the factory, used an adhesive like material to mate the connectors of the coolant lines and engine and after usage they will come apart causing coolant to be hemorrhaged onto the engine and potentially wheels/tires causing for very dangerous road conditions. …
While driving home from work in December 2015, on a local road near my home, the engine began emitting a large steam cloud behind the vehicle and the coolant level light appeared. I pulled over and there was a major coolant leak behind the car. I had the car taken to a shop, and they identified the issues as one of the coolant pipes had separated from the engine and dumped all of the coolant on the road. In the attached image you can see the separated coolant pipe from the engine towards the back of the picture. Given the cost of repair, I had to wait until summer of 2016 to have the repair completed.
From a stop I accelerated in a straight line onto a freeway on-ramp. Approximately 10 seconds later I noticed a squealing sound from the engine belts. I looked in the rear view mirror and noticed a large volume of steam coming from the rear of the car. Having read about other peoples experiences with this issue I immediately exited the freeway as soon as I was able, stopped the car, and turned it off to prevent further damage as all coolant had exited the vehicle.
On two separate occasions, the coolant fittings which mount in the cylinder head popped out. The fittings attach to the coolant hoses. In both cases the epoxy that held the fittings in had failed. Each time I was driving and coolant spewed all over the inside of the engine bay and then subsequently onto the road as I was driving. The first incident I was driving about 50 MPH (10/19/11 - 52230 miles on the odometer). When this first fitting popped out, since it was behind the alternator, damaged it requiring replacement of the alternator. I had to pay for the alternator and epoxied that fitting out. The second fitting failed on June 14, 2012 with 56384 miles on the odometer. This time it was in a location that required removal of the engine. The circumstances were similar to the first, around 50 MPH and coolant dumping over all over the ground. …
NHTSA investigations
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…
Frequently asked questions
Which Porsche 911 Turbo years have engine problems?
By NHTSA complaints, the 2007 (19), 2001 (17), 2003 (13), 2002 (12) and 2004 (5) model years. Engine complaints make up 86% of all complaints for the 2007.
Is there a recall for Porsche 911 Turbo engine problems?
No. NHTSA lists no engine & cooling recall for any Porsche 911 Turbo model year. A widespread problem may still be covered by an extended warranty or a manufacturer service bulletin, so ask a dealer.
At what mileage do Porsche 911 Turbo engine problems start?
Across all years, half of the complaints with a recorded mileage happened before about 46,000 miles; 56% happened before 50,000 miles.
What part fails most often?
Owners most often name the engine › gasoline (2 mentions).
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.