"How reliable is the 2004 Porsche 911 Gt3?"

"Based on 32 NHTSA complaints, the 2004 Porsche 911 Gt3 has a median complaint mileage of 32500 miles. The most common issue is Engine."

"What are common problems with the 2004 Porsche 911 Gt3?"

"The most frequently reported component in NHTSA complaints for the 2004 Porsche 911 Gt3 is Engine, accounting for a significant portion of the 32 total complaints filed."

2004 Porsche 911 Gt3: Reliability Data

Source: NHTSA — 32 complaints

Total Complaints

32,500mi

Median Mileage

Engine

Top Issue

Crash Reports

When Do Complaints Happen?

Distribution of NHTSA complaints by vehicle mileage at time of report.

22,750 25th Percentile

32,500 Median Mileage

40,850 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

Engine

Cooling System

Power Train

Unknown Or Other

Engine And Engine Cooling

Fuel System, Gasoline

Severity Assessment

Crashes

Fires

Injuries

Deaths

Sample Complaint Reports

"PORSCHE GT1 ENGINE PRESS FIT COUPLING FOR COOLANT LINES. WHEN COUPLING FAILS, THERE IS RAPID COOLANT LOSS WHICH IS A TOXIC HAZARD AS WELL AS POTENTIALLY DANGEROUS TO TRAFFIC. ALSO, WITHOUT COOLANT THE ENGINE IS IN JEOPARDY OF OVERHEATING. *TR"

"PORSCHE GT1 ENGINE PRESS FIT COOLANT COUPLING FAILURE. HIGH PRESSURE COOLANT COUPLER FAILS CAUSING RAPID LOSS OF ALL COOLANT. THIS IS NOT ONLY A TOXIC HAZARD, BUT A SAFETY CONCERN ON THE ROAD. FURTHER, LOSS OF COOLANT JEOPARDIZES ENGINE LIFE. THE GT1 ENGINE HAS 8 PRESS FIT COUPLINGS. SO FAR, 2 ..."

"DRIVING IN A HIGH PERFORMANCE DRIVING EVENT ON A HOT DAY GOING AROUND A FAST RIGHT HAND TURN AND FELT THE CAR BEING A LITTLE LOOSE THEN NOTICED THE ON BOARD COMPUTER FLASHING LOW COOLANT. I SLOWED DOWN AND PULLED IN TO A SAFE PLACE TO CHECK THE MOTOR AND SAW A COOLANT J SHAPED PRESS FITTING COMPLETE..."

Source: NHTSA ODI Complaints Database. Names and identifying details omitted.

When Were Complaints Filed?

Number of complaints by the year the issue occurred.

When Does Each Component Fail?

Median mileage at complaint for top components.

Engine 22 complaints

25th: 20,500 mi Median: 30,500 mi 75th: 39,923 mi

Cooling System 3 complaints

Median: 35,000 mi

Power Train 3 complaints

Median: 28,010 mi

Where Are Complaints Coming From?

Top states by complaint count.

CA: 7 TX: 4 OH: 4 FL: 3 IL: 2 WA: 2 NM: 2 CT: 2 NY: 1 MI: 1

Porsche 911 Gt3 — Other Years

See how this model compares across different model years.

Year	Complaints	Median Mileage	Top Issue	Crashes
2007	26	23,192	Engine	0

Data source: View this vehicle on NHTSA.gov | NHTSA ODI Complaints Database. Public domain.

Methodology: Complaint counts and mileage distributions are computed directly from consumer-reported NHTSA complaints. This data represents reported issues, not failure rates — vehicles without complaints are not represented. Full methodology.

Data through: 2026-03-28