Porsche MOT failure rates by model
Porsche cars fail 15.3% of MOT tests. Here is every Porsche model ranked by failure rate, and the item each loses most tests to.
What is the MOT failure rate for Porsche cars?
Across 2,888,823 MOT tests in the DVSA record, 15.3% of Porsche cars fail. That is 10.4 points below the 25.7% national average across all cars. The Porsche models below are ranked worst to best by failure rate, each with the failure area it loses most tests to.
| Model | Failure rate | Tests | Top failure area |
|---|---|---|---|
| Porsche 924 | 30.4% | 35,775 | Brakes |
| Porsche 944 | 27.7% | 103,369 | Brakes |
| Porsche 928 | 24.0% | 29,735 | Lamps & electrical |
| Porsche 914 | 23.1% | 1,534 | Lamps & electrical |
| Porsche 912 | 22.1% | 2,931 | Lamps & electrical |
| Porsche 968 | 20.9% | 17,442 | Lamps & electrical |
| Porsche 356 | 17.7% | 3,372 | Lamps & electrical |
| Porsche Boxster | 17.2% | 736,033 | Lamps & electrical |
| Porsche Carrera | 17.1% | 23,207 | Lamps & electrical |
| Porsche Cayenne | 15.4% | 405,812 | Tyres |
| Porsche 911 | 14.6% | 1,014,688 | Lamps & electrical |
| Porsche Cayman | 11.2% | 188,394 | Lamps & electrical |
| Porsche Panamera | 11.1% | 69,777 | Tyres |
| Porsche Taycan | 9.1% | 31,639 | Tyres |
| Porsche Macan | 7.9% | 208,046 | Tyres |
| Porsche Gt | 6.2% | 1,004 | Lamps & electrical |
| Porsche 718 | 3.6% | 5,154 | Tyres |
Which Porsche fails its MOT most, and which least?
The Porsche 924 has the highest failure rate at 30.4%, and the Porsche 718 the lowest at 3.6%. A higher rate reflects how old and how hard a model tends to be used as much as how it was built, so the oldest models in the range usually sit near the top.
Compare another make
Failure rates for other makes with a large MOT sample.
| Make |
|---|
| Lexus MOT failure rates |
| Yamaha MOT failure rates |
| Alfa Romeo MOT failure rates |
| MG MOT failure rates |
| Subaru MOT failure rates |
| Triumph MOT failure rates |
Sources: DVSA MOT History API: MOT test results and defect data ยท DVSA MOT testing data for Great Britain