2003 Porsche 911 Engine cooling Problems
- Complaints
- 3about this part
- Share
- 33%of 9 total for the year
- Median mileage
- 69,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 3 complaints about the engine cooling of the 2003 Porsche 911, 33% of the 9 complaints for this model year. Where a mileage was given, the median is 69,000 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Entered highway and reached highway speed, low coolant light appeared and large cloud of smoke exited the rear of the car. Pulled over and engine bay smoking with coolant everywhere inside engine bay and over rear of car including tires. Coolant had completely drained due to a glued in fitting which had come loose.”
NHTSA complaint #10515138, filed 2013-06, 52,000 miles“Coolant fitting on engine blew off on the freeway, dumping all the coolant and causing a major traffic slowdown. Car was able to be repaired by bonding (jb weld) in the fitting into the engine block. No issues since. Also, the left front radiator leaked and needed to be replaced.”
NHTSA complaint #10510346, filed 2013-05, 69,000 milesEngine cooling: other model years
Other parts of the 2003 Porsche 911
3 complaintsElectrical system
1 complaintsEngine
1 complaintsEquipment
1 complaintsSeats
1 complaintsWheels
1 complaints
← All problems reported for the 2003 Porsche 911
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology