Porsche Common MOT Problems (2026)
Porsche models ranked by MOT fail rate, with typical issues to check for cars of each age and type. Based on 453,463 MOT tests (DVSA data for tests carried out in 2024, retests included).
Average Porsche MOT pass rate: 92%
Check Your Porsche's MOT History
See the specific issues found on your car, plus health score and running cost estimates.
92%
Avg pass rate
8%
Avg fail rate
69
Models tested
Porsche Models with the Most MOT Problems
Highest average fail rates (models with 1,000+ tests, cars registered up to 2021)
| # | Model | Fail Rate | Typical Issues (estimate) | |
|---|---|---|---|---|
| 1 | Porsche 944 | 14% | Suspension wear, Brake disc corrosion, Structural corrosion | |
| 2 | Porsche 968 | 12% | Suspension wear, Brake disc corrosion, Structural corrosion | |
| 3 | Porsche Boxster | 11% | Suspension wear, Brake disc corrosion, Structural corrosion | |
| 4 | Porsche Cayenne | 8% | Suspension wear, Brake disc corrosion, Structural corrosion | |
| 5 | Porsche 911 | 7% | Suspension wear, Brake disc corrosion, Structural corrosion |
Most Reliable Porsche Models
Lowest average fail rates (models with 1,000+ tests, cars registered up to 2021). Newer models tend to pass more often simply because they are younger.
| # | Model | Pass Rate | |
|---|---|---|---|
| 1 | Porsche 718 Cayman GT4 | 97% | |
| 2 | Porsche 911 Carrera S-A | 97% | |
| 3 | Porsche 911 Turbo S S-A | 96% | |
| 4 | Porsche Cayenne Turbo S E-Hybrid Auto | 96% | |
| 5 | Porsche Taycan 4S 93KWH | 95% |
All Porsche Models by Fail Rate
Every Porsche model and year with 300+ MOT tests (cars registered up to 2021), sorted by fail rate (highest first). Fuel type is shown as a guide.
| Model | Year | Pass Rate | Fail Rate | |
|---|---|---|---|---|
| Boxster | 1998 | 78% | 21% | |
| Boxster | 1999 | 81% | 18% | |
| Boxster | 2002 | 82% | 17% | |
| Boxster | 2001 | 83% | 17% | |
| Boxster | 2000 | 82% | 17% | |
| Boxster | 2003 | 82% | 16% | |
| Boxster | 2004 | 83% | 16% | |
| Cayenne | 2007 | 83% | 16% | |
| Boxster | 1997 | 83% | 16% | |
| Cayenne | 2005 | 84% | 15% | |
| Cayenne | 2004 | 84% | 15% | |
| Cayenne | 2003 | 84% | 15% | |
| 944 | 1991 | 83% | 15% | |
| 944 | 1990 | 85% | 14% | |
| 968 | 1993 | 85% | 14% | |
| Boxster | 2005 | 86% | 13% | |
| 911 | 2002 | 86% | 13% | |
| Cayman | 2006 | 86% | 13% | |
| 911 | 1998 | 85% | 13% | |
| Cayenne | 2006 | 86% | 13% | |
| Cayenne | 2008 | 86% | 13% | |
| Panamera D V6 Tiptronic Auto | 2011 | 87% | 13% | |
| 911 | 2003 | 87% | 12% | |
| Boxster | 2006 | 88% | 12% | |
| 911 | 1999 | 87% | 12% | |
| Cayman | 2007 | 88% | 12% | |
| 911 | 2001 | 88% | 12% | |
| 911 | 2000 | 86% | 12% | |
| Cayenne | 2009 | 87% | 12% | |
| Panamera | 2011 | 87% | 12% | |
| 911 | 2004 | 88% | 11% | |
| Cayman | 2008 | 89% | 11% | |
| 968 | 1994 | 88% | 11% | |
| Cayman | 2005 | 89% | 11% | |
| Cayenne V6 D Tiptronic | 2012 | 89% | 11% | |
| 911 | 2005 | 90% | 10% | |
| Cayenne | 2012 | 89% | 10% | |
| Boxster | 2007 | 89% | 10% | |
| Cayenne | 2010 | 89% | 10% | |
| 911 | 1995 | 89% | 10% | |
| Cayman | 2010 | 90% | 10% | |
| Panamera | 2010 | 89% | 10% | |
| 944 | 1992 | 89% | 10% | |
| 911 | 2006 | 90% | 9% | |
| Cayenne | 2014 | 91% | 9% | |
| 911 | 2007 | 90% | 9% | |
| Macan | 2014 | 90% | 9% | |
| Cayenne | 2011 | 90% | 9% | |
| 911 | 1997 | 90% | 9% | |
| 911 | 1994 | 91% | 9% |
Showing top 50 of 152 model/year combinations. View all Porsche models
Porsche MOT FAQ
What are the most common MOT problems on Porsche cars?
The most common MOT problems on Porsche cars vary by model and age, but typically include lighting defects, suspension wear, brake wear and tyre condition, which are the most common reasons for failure across all makes in DVSA's published MOT statistics. Older Porsche diesels are more prone to exhaust and emissions failures. Of the Porsche models with at least 1,000 tests, the Porsche 944 has the highest average fail rate at 14%.
Which Porsche model is the most reliable?
In our data, the Porsche 718 Cayman GT4 has the best MOT record of the Porsche models with at least 1,000 tests: 97% of its 1,543 MOT tests ended in a pass and 2% in a fail. Newer models tend to pass more often simply because they are younger, so compare models of a similar age.
What is the average MOT pass rate for Porsche?
The average MOT pass rate for Porsche is 92%, based on 453,463 MOT tests across 69 models (DVSA MOT data for tests in 2024, retests included). That means roughly 8% of MOT tests on Porsche cars ended in a fail.
Porsche Model Problem Guides
Typical issues to check, rough repair costs and year-by-year MOT pass rates for each Porsche model
Every Porsche model, A to Z (26)
- Porsche 718 Cayman GT4
- Porsche 718 Cayman GT4 S-A
- Porsche 718 Spyder
- Porsche 911
- Porsche 911 Carrera 4 S-A
- Porsche 911 Carrera Auto
- Porsche 911 Carrera S-A
- Porsche 911 Targa 4S
- Porsche 911 Turbo S S-A
- Porsche 944
- Porsche 968
- Porsche Boxster
- Porsche Cayenne
- Porsche Cayenne GTS Auto
- Porsche Cayenne Turbo S E-Hybrid Auto
- Porsche Cayenne V6 D Tiptronic
- Porsche Cayman
- Porsche Macan
- Porsche Panamera
- Porsche Panamera D V6 Tiptronic Auto
- Porsche Taycan 4S 79KWH
- Porsche Taycan 4S 93KWH
- Porsche Taycan 4S Cross Turismo
- Porsche Taycan 4X2
- Porsche Taycan Turbo
- Porsche Taycan Turbo S
Check a Specific Porsche
Enter any reg plate to see the individual MOT history, defects found, health score, and running cost estimate for that specific car.