Porsche 911 MOT pass rate, common failures and mileage
In 2023, 89.0% of 48,226 MOT tests on the Porsche 911 ended in a pass, 12.5 points above the 76.5% average for all cars. Comparing like for like at ages 3 to 10, it passed 94.5% against 82.0%, ranking 1st of 148 models.
Pass rate and mileage by age
Each row covers the Porsche 911 MOT tests at that age. Mileage shows the median and the middle half of odometer readings, from the 25th to the 75th percentile.
| Age | Pass rate | Mileage |
|---|---|---|
| 2418 tests | 95.2% | 11,000 · 7k to 17k |
| 31,505 tests | 95.2% | 13,000 · 9k to 19k |
| 41,907 tests | 94.5% | 15,000 · 9k to 21k |
| 52,376 tests | 94.7% | 17,000 · 11k to 25k |
| 61,687 tests | 94.8% | 23,000 · 15k to 31k |
| 71,748 tests | 95.4% | 25,000 · 17k to 37k |
| 81,727 tests | 94.3% | 29,000 · 19k to 41k |
| 91,404 tests | 94.4% | 33,000 · 23k to 47k |
| 101,361 tests | 92.7% | 43,000 · 31k to 57k |
| 111,303 tests | 92.9% | 43,000 · 29k to 55k |
| 121,373 tests | 92.9% | 43,000 · 29k to 59k |
| 131,534 tests | 91.1% | 51,000 · 35k to 67k |
| 141,517 tests | 89.8% | 55,000 · 39k to 73k |
| 152,137 tests | 89.8% | 55,000 · 39k to 71k |
| 162,595 tests | 87.2% | 61,000 · 43k to 79k |
| 172,824 tests | 86.4% | 67,000 · 49k to 83k |
| 182,843 tests | 86.1% | 71,000 · 53k to 89k |
| 192,370 tests | 83.2% | 71,000 · 53k to 93k |
| 202,573 tests | 84.1% | 79,000 · 61k to 99k |
| 211,963 tests | 83.4% | 83,000 · 63k to 103k |
| 221,235 tests | 83.2% | 85,000 · 67k to 105k |
| 231,013 tests | 84.0% | 91,000 · 69k to 111k |
| 241,278 tests | 81.1% | 97,000 · 73k to 115k |
| 25808 tests | 83.8% | 87,000 · 61k to 113k |
Most common MOT failures and advisories
How often each item came up, per 100 MOT tests on the Porsche 911. Advisories are things the tester noted that did not fail the car, often wear that will need attention soon. Follow an item to see what it means and how serious it is.
Failures
Advisories and minor defects
What to check on a used 911
The parts that come up most often in Porsche 911 MOTs, and how to look at them on a viewing.
- Brake pipes and hosesLook underneath at the metal brake pipes for heavy rust, and at the rubber hoses for cracks or bulges.
- Brake discs and padsAsk when the discs and pads were last replaced, and look through the wheel for a raised lip on the edge of the disc.
- Oil leaksLook under the engine and gearbox, and at the ground where the car was parked, for fresh oil.
- Wipers, washers and windscreenRun the wipers and washers, and look for chips or cracks in the windscreen, above all in front of the driver.
- TyresCheck the tread across the full width of every tyre, including the inner edge, and look for cuts and bulges in the sidewalls.
Check a specific 911
Fleet averages only go so far. Enter the registration to see that car's own MOT history, mileage record and current condition, free.
Questions
What is the MOT pass rate of the Porsche 911?
What fails most often on a Porsche 911 MOT?
What is a normal mileage for a 10-year-old Porsche 911?
What do MOT testers most often advise on a Porsche 911?
Other Porsche models
Overall MOT pass rate in 2023. Compare all Porsche models or see every make.
How these figures are made. We counted every initial MOT test (not retests) of cars and light vans in Great Britain in 2023 from the DVSA anonymised MOT dataset, 33,842,940 tests in all. Pass rate is the share of initial tests that ended in a pass, counting faults fixed during the test. Age is whole years from first registration to the test, so a car having its first MOT a few weeks early counts as 2.
Like-for-like pass rates average each model's pass rate at ages 3 to 10 with the same age mix for every model, so a model is not flattered by a young fleet or penalised by an old one. Models are grouped by the first word of the DVSA model name, and names that cover several models are left out.
Contains public sector information licensed under the Open Government Licence v3.0. RegTail's analysis of the DVSA anonymised MOT dataset, 2023 tests.