Porsche: MOT pass rate and reliability

Porsche vehicles pass the MOT first time 88.7% of the time, measured across 177,539 DVSA tests. That is 11.7 points better than the 77% national average, ranking Porsche 5 of 50 major brands sold in the UK.

Bidding on a damaged Porsche at Copart? Run the lot through the salvage profit analyzer for the repair cost, fees, VAT and your maximum bid. Buying a used Porsche, damaged or not? Run its registration through the free vehicle history check first: these are brand averages, that page checks the exact car.

Every brand ranked

1. Ferrari - 95.9%
2. LEVC - 95.4%
3. Aston Martin - 93.2%
4. Bentley - 92.5%
5. Porsche - 88.7%
6. Lexus - 87.7%
7. Tesla - 84.8%
8. Maserati - 84.3%
9. MG - 83.9%
10. BMW - 82.5%
11. Jaguar - 81.9%
12. Abarth - 81.8%
13. Audi - 81.6%
14. MINI - 81.6%
15. Toyota - 81.3%
16. Land Rover - 80.6%
17. Skoda - 80.6%
18. Mercedes-Benz - 79.9%
19. Suzuki - 79.5%
20. Kia - 78.9%
21. Hyundai - 78.8%
22. SEAT - 78.7%
23. Subaru - 78.6%
24. Honda - 78.3%
25. Dacia - 78.3%
26. Volvo - 78.2%
27. Jeep - 78%
28. Smart - 77.6%
29. Volkswagen - 77.1%
30. Mazda - 77%
31. Mitsubishi - 76.9%
32. DS - 76.2%
33. London Taxis International - 75.5%
34. Ford - 74.8%
35. Isuzu - 73.7%
36. Nissan - 73.4%
37. Peugeot - 73.2%
38. Fiat - 73%
39. Ssangyong - 73%
40. Vauxhall - 72.4%
41. Alfa Romeo - 72.4%
42. Citroen - 70.8%
43. Iveco - 70.2%
44. Rover - 70.2%
45. Saab - 69.1%
46. Renault - 68.1%
47. Chrysler - 67.2%
48. Daihatsu - 67.1%
49. Chrysler-Jeep - 67%
50. Chevrolet - 62.8%

Porsche models

• Porsche 911 - 89%, 46,890 tests
• Porsche Boxster - 84.2%, 32,366 tests
• Porsche Macan - 92.1%, 30,214 tests
• Porsche Cayenne - 86.4%, 29,305 tests
• Porsche Cayman - 89.9%, 14,032 tests
• Porsche Panamera - 87.8%, 6,608 tests
• Porsche Taycan 4s 93kwh - 90.8%, 2,316 tests
• Porsche 944 - 77.4%, 2,281 tests
• Porsche Taycan Turbo - 89.8%, 993 tests
• Porsche Taycan 4x2 - 89.5%, 953 tests
• Porsche Taycan 4s 79kwh - 88.6%, 660 tests
• Porsche Taycan Turbo S - 89.7%, 648 tests
• Porsche 911 Turbo S S-A - 94%, 554 tests
• Porsche 924 - 74.7%, 553 tests
• Porsche 968 - 84.9%, 517 tests
• Porsche 928 S - 81.5%, 513 tests

Most common MOT failures across every Porsche

Pooled across all Porsche models, not just one: what actually fails on a Porsche more than the UK average.

1. Number plate does not conform to the specified requirements, 0.5% of tests (2.79x the national rate for this defect)
2. Lambda coefficient outside the default limits or the range specified by the manufacturer, 1% of tests (1.94x the national rate for this defect)
3. A tyre seriously damaged, 2% of tests
4. Tyre tread depth not in accordance with the requirements, 1.6% of tests
5. The aim of a headlamp is not within limits laid down in the requirements, 1.5% of tests
6. A tyre cords visible or damaged, 1.1% of tests
7. A spring or spring component fractured or seriously weakened, 1% of tests
8. Brake pipe damaged or excessively corroded, 0.9% of tests
9. Windscreen washers not working or not providing sufficient fluid to clear the windscreen, 0.8% of tests
10. A transmission shaft constant velocity joint boot missing or no longer prevents the ingress of dirt etc, 0.8% of tests

From 178,627 DVSA-tracked Porsche tests, 2024. DVSA testers marked 4.49% of these flagged defects as "dangerous", against 5.11% nationally.

Most common MOT advisories across every Porsche

An advisory doesn't fail the car - the tester flags it as worth watching, but it still passes. Pooled across all Porsche models, this is a different list from the failures above.

1. Brake pipe damaged or excessively corroded, 8.1% of tests (1.31x the national rate for this advisory), also fails
2. Tyre tread depth not in accordance with the requirements, 18.9% of tests, also fails
3. A tyre seriously damaged, 10.1% of tests, also fails
4. Brake disc or drum excessively weakened, insecure or fractured, 7.8% of tests
5. A suspension pin, bush or joint excessively worn, 5.3% of tests
6. a brake lining or pad worn below 1.5mm, 4.3% of tests
7. Fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users, 3.7% of tests
8. A suspension component excessively damaged or corroded, 1.6% of tests
9. Brake disc or drum significantly and obviously worn, 1.6% of tests
10. A shock absorber damaged to the extent that it does not function or showing signs of severe leakage, 1.2% of tests

From 178,627 DVSA-tracked Porsche tests, 2024.

More on brand reliability

• Britain's most and least reliable car brands: MOT pass rate by manufacturer
• Which car brands beat their age on the MOT test? 33 million tests, ranked
• The cheapest, most reliable makes to buy at salvage auction

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