🚗 AutoDefect IQ

2004 Porsche 911 problems, complaints & recalls

Most-reported problem areas: Engine (5) · Structure:body (1) · Engine And Engine Cooling:engine (1)

🧭 Reliability snapshot

100 /100
✓ Typical or better for this model

Compared against other Porsche 911 model years — complaint volume vs the model's median year, recalls and severity. How we score →

8
Complaints
0
Recalls
379
Service bulletins
1
Crashes reported
0
Fires reported
0
Deaths

Safety recalls (0)

No recalls on record for this model year (campaigns announced since 2010).

Service bulletins (379)

Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.

Unknown Or Other 2026-09-29 · GR13D801-1 · Service Bulletin/Repair Instructions

parts information for parts withdrawal - radio & satellite radio receiver. note that part 91164559100 is also applicable to the following models not in the product list: 911 (1970-1989), 914 (1970-1976), 924 (1976-1985), 924s (1986-1988), 928 (1978-1995), 944 (1982-1991), 964 (1989-1994), 968 (1992-

Power Train 2026-09-22 · No. 28-26 · Service Bulletin/Repair Instructions

manufacturer's certificate for overview of approved porsche c40 engine oils. note that this bulletin covers all models back to model year 1984, for which c40 engine oils are allocated.

Power Train 2026-09-22 · No. 27-26 · Service Bulletin/Repair Instructions

manufacturer's certificate for overview of approved porsche c20 engine oils. note that the bulletin covers all models back to model year 1984, for which c20 engine oils are allocated.

Power Train 2026-09-22 · No. 26-26 · Service Bulletin/Repair Instructions

manufacturer's certificate for overview of approved porsche c30 engine oils. note that the bulletin includes all models back to model year 1984, for which c30 engine oils are allocated.

Power Train 2026-09-22 · No. 25-26 · Service Bulletin/Repair Instructions

manufacturer's certificate for overview of approved porsche a40 engine oils. note that this bulletin covers all vehicles from model year 1997 to 2020, for which a40 engine oils are assigned. model years 1997-2001 are not available for selection in the system.

Wheels 2026-09-14 · SPTL2609 · Service Bulletin/Repair Instructions

special tools and equipment information for alignment machines - q3 2026 software spec update available

Showing the 6 most recent of 379 bulletins. Search all of them free at nhtsa.gov.

What owners report

2022-03-21 · Engine

“yesterday as i was driving in freeway, my friend was following me from behind, he noticed smoke and coolant leaking making his car's windshield dirty. so we stopped at gas station and noticed good amount of coolant leakage from underneath which make the back of the car and tires big mess. i noticed, before my friend's call, the handling and grip of…”

2013-10-11 · Engine · 40,000 mi

“the m96 motor supplied with this vehicle line has had the following problems. engine block leaks the block is porous. resleeved cylinders were maker fix ,the sleeves moved causing engine destruction. a main crankshaft bearing was designed out. allowing the crankshaft to move frt to back and with gravity causing a failure of the rear main seal cou…”

2013-10-06 · Engine · 17,042 mi

“my gt3 has cooling pipe on the engine external to the block. i have read this is a systemic issue with the engine used in gt3 and turbos (metzger motor). a fitting comes loose due to adhesive failure resulting i loss of all or most of the coolant fluid. the repair requires engine removal and repair of the fittings. there is some issue as to th…”

2013-05-30 · Structure:body · 12,000 mi · 💥 crash

“the event happened in 2008. purchased porsche gt 3 from porsche dealer in 2006. accelerating onto a limited access highway from an entrance ramp the car made a violent fishtail movement in a counterclocwise direction causing a 180 deg. spin. i tried to correct but no response and then applied brakes heavily but car continued its movement eventuall…”

2013-05-02 · Engine · 15,000 mi

“the above car has a factory water cooling system that involves aluminum piping that is epoxied into the block after approximately 24 months of use the epoxy fails and all the coolant is evacuated from the system all over the engine and the ground the motor could seize and the coolant on the road in that volume creates a dangerous situation for othe…”

2013-01-07 · Engine · 21,000 mi

“the coolant lines are glued in by factory to save costs. however the glue is failing and the coolant lines pop out and anti freeze is dumped everywhere causing an unsafe condition . porsche is aware of their problem but doing mothing about recalling older cars to be repaired. i paid to repair my car independently but porsche owners are being enc…”

2011-09-01 · Engine And Engine Cooling · 41,666 mi

“traveling at a speed of 30 miles per hour at a low rpm, i heard a loud grinding noise underneath the car. initially i thought road debris was caught underneath the car and i was dragging it along while driving. i quickly turned the car to the right off the road and turned the motor off. underneath the vehicle i noticed all of the engine's oil sp…”

2011-07-21 · Engine And Engine Cooling:engine · 12,000 mi

“driving on freeway when heard a weird noise from the back of the car and a message in red came up on the instrument cluster, lost power to engine, pulled over and oil leaking from engine. engine completely destroyed due to ims failure. engine was replaced with re-manufactured engine by dealer. *kb…”

Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.

Other Porsche 911 years