2003 Porsche 911 Engine Problems
- Complaints
- 1about this part
- Share
- 11%of 9 total for the year
- Median mileage
- 62,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the engine of the 2003 Porsche 911, 11% of the 9 complaints for this model year. Where a mileage was given, the median is 62,000 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.
“Vehicle's engine started to rattle at warm-up, then would go away, typical for an ims failure. Any longer wait may have resulted in complete engine failure.”
NHTSA complaint #10586974, filed 2014-05, 62,000 milesRelated service bulletins
- 11037816Sep 22, 2026Manufacturer'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…
- 11037813Sep 22, 2026Manufacturer'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…
- 11037812Sep 22, 2026Manufacturer'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…
- 11037808Sep 22, 2026Manufacturer'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…
- 11035916Jul 22, 2026Allocation of Approved Engine Oils MY 2027 (13/26)
- 11034777Jun 25, 2026Overview of Approved Porsche C20 Engine Oils (20/26)
- 11034776Jun 25, 2026Overview of Approved Porsche C30 Engine Oils (19/26)
- 11034775Jun 25, 2026Overview of Approved Porsche C40 Engine Oils (21/26)
- 11034774Jun 25, 2026Overview of Approved Porsche A40 Engine Oils (15/26)
- 11034773Jun 25, 2026Overview of Approved Porsche C30 Engine Oils (16/26)
Engine: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2024 | 2 | 33% |
| 2022 | 1 | 10% |
| 2020 | 3 | 60% |
| 2015 | 3 | 38% |
| 2013 | 1 | 17% |
| 2012 | 1 | 20% |
| 2004 | 6 | 75% |
| 2003 | 1 | 11% |
| 2002 | 6 | 67% |
| 2001 | 5 | 63% |
| 1999 | 2 | 25% |
Other parts of the 2003 Porsche 911
3 complaintsOther or unknown
3 complaintsElectrical system
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