1999 Porsche 911 Carrera Engine cooling Problems
- Complaints
- 2about this part
- Share
- 15%of 13 total for the year
- Median mileage
- 65,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the engine cooling of the 1999 Porsche 911 Carrera, 15% of the 13 complaints for this model year. Where a mileage was given, the median is 65,000 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.
“Normal synthetic oil change intervals and recommended dealer service. At 65k miles engine failed. Diagnosis was that a connecting rod punctured the engine block. No assistance at all from Porsche, had to purchase a replacement engine as the car was 2 years out of warranty.”
NHTSA complaint #10328725, filed 2010-05, 65,000 miles“1999 Porsche 911 CARRERA. S10 direct reply- letter to the secretary from re numerous defects in Porsche cars the consumer stated there were many defects in recent years, especially with the m96 and m97 engines. Other known defects were the transmission, air bags, clutch etc. The consumer stated he experienced two failures with the engine in his vehicle. He also had problems with the transmission due to a rattling noise, the clutch pedal which was binding and the airbags. Also, the battery had to be replaced five times. …”
NHTSA complaint #10358688, filed 2010-10Related service bulletins
- 10243588Sep 5, 2023Manufacturers certificate for an overview of approved Porsche A40 engine oils.
- 10243587Sep 5, 2023Manufacturers certificate for an overview of approved Porsche C40 engine oils.
- 10243586Sep 5, 2023Manufacturers certificate for an overview of approved Porsche C30 engine oils.
- 10243585Sep 5, 2023Manufacturers certificate for an overview of approved Porsche C20 engine oils.
- 10242132Aug 25, 2023Parts information on parts withdrawal for the oil pump
- 10240439Jul 31, 2023Manufacturers certificate for allocation of approved engine oils
- 10233941Mar 24, 2023Manufacturers certificate for approved engine C20 engine oils.
- 10232393Feb 13, 2023Overview of approved engine A40 oils for all Porsche models that use A40 oil.
- 10232392Feb 13, 2023Overview of approved engine C40 oils for all Porsche models that use C40 oil.
- 10232391Feb 13, 2023Overview of approved engine C30 oils for all Porsche models that use C30 oil.
Engine cooling: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2004 | 3 | 43% |
| 1999 | 2 | 15% |
Other parts of the 1999 Porsche 911 Carrera
7 complaintsSeat belts
4 complaintsElectrical system
2 complaintsFuel system
2 complaintsTransmission and drivetrain
2 complaintsEquipment
1 complaints
← All problems reported for the 1999 Porsche 911 Carrera
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 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