2021 Porsche 911 Turbo S S-A: MOT pass rate and reliability
95.1% of 2021 Porsche 911 Turbo S S-As pass the MOT first time, measured across 287 DVSA tests on that model year alone. The average one had covered 10,482 miles.
How the 2021 compares
- Against all Porsche 911 Turbo S S-As (94.4%, 552 tests): +0.7 points
- Against all 2021 cars (90%): +5.1 points
- National first-time pass rate, all cars and years: 77%
Every Porsche 911 Turbo S S-A model year
Pass rates fall as cars age, so the only fair comparison for a 2021 car is other cars of the same age. The full run for the Porsche 911 Turbo S S-A:
| Year | Pass rate | Tests | Avg mileage |
|---|---|---|---|
| 2020 | 94% | 217 | 13,323 |
| 2021 | 95.1% | 287 | 10,482 |
What this means if you are buying a 2021 911 Turbo S S-A
The 2021 sits close to the Porsche 911 Turbo S S-A average, so there is no strong model-year signal either way. Judge the individual car on its own history. Check the exact car with the free MOT history checker before you buy, and run its VIN and mileage through our free VIN decoder and clocking check.
What a 5-year-old car fails on
A 2021 car is 5 years old now, and age drives the failure mix more than the badge does. Across all cars tested, these are the categories that actually cause failures:
- Lights and electrical: 10.36% of all cars tested
- Suspension: 8.65% of all cars tested
- Tyres: 6.23% of all cars tested
- Brakes: 6.1% of all cars tested
- Visibility: wipers, washers, glass: 4.65% of all cars tested
- Body, chassis and structure: 3.18% of all cars tested
That is low mileage, which usually means light urban use. Short journeys are harder on batteries, brakes and exhausts than motorway miles, so do not assume low miles means low wear. On a 2021 Porsche 911 Turbo S S-A the average at test was 10,482 miles, so treat anything far above that as a car that has worked harder than its peers, and anything far below as one worth checking for the faults that come from standing still.
2021 is the strongest year on record for this model at 95.1%, ahead of every other year we hold data for.