2021 Audi S3 · 1,310 MOT tests
2021 Audi S3 reliability
2021 Audi S3s fail 5% of first MOT tests, 58% fewer MOT fails than the average car its age and mileage, ranking 1 of 8 S3 years (1,310 DVSA tests, 2022 to 2024).
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- first-time fail rate (all Audi S3s: 17.5%)
- 5%
- first-time fail rate (all Audi S3s: 17.5%)
- fails than cars of the same age and mileage
- 58% fewer
- fails than cars of the same age and mileage
- typical miles at its MOT, aged about 3
- 27,868
- typical miles at its MOT, aged about 3
- MOT tests, 2022 to 2024
- 1,310
- MOT tests, 2022 to 2024
Year on year
2021 against the years either side
- 2020 cars: 45% fewer MOT fails than the average car its age (the 2021 car does better)
- Strong point: tyres, 38% fewer fails than comparable cars.
- Plates: a 2021 car carries a 70 plate (January–February 2021), or a 21 plate (March–August 2021), or a 71 plate (September–December 2021).
Common problems
What fails on a 2021 Audi S3
Fail rate by area
- Tyres2.7%
- Exhaust, emissions and leaks0.8%
- Brakes0.5%
- Seat belts and airbags0.4%
- Windscreen, wipers and mirrors0.3%
- Suspension0.2%
- Lights and electrics0.2%
Average for cars of the same age and mileage
Top failures
Tyre tread below 1.6mm 0.61%
Tread below 1.6mm is illegal and reduces grip in wet conditions, so the tyre must be replaced.
Tyre ply or cords exposed 0.31%
Exposed ply or cords can let the tyre fail suddenly, so the tyre must be replaced before the car is driven.
Lambda reading outside specified limits 0.31%
An out-of-range lambda reading suggests poor fuel mixture or a failing catalytic converter, so diagnosis is needed.
Brake pads worn below 1.5mm 0.23%
Pads worn below 1.5mm lose stopping power and can damage discs, so replacement is needed before the car is driven.
Windscreen washers not working 0.23%
Without working washers the windscreen cannot be cleaned while driving, which is a safety risk in dirty weather.
Tyre bulge from structural failure 0.15%
A bulge means the tyre's structure has failed and it could burst suddenly, so it must be replaced at once.
Common advisories
Tyre worn close to legal limit (4.58%) · Brake pads wearing thin (2.21%) · Tyre has a shallow cut (0.99%) · Tyre worn close to legal limit (0.84%) · Tyre slightly damaged or cracking (0.84%) · Brake disc pitted or scored (0.76%)
Is a 2021 Audi S3 reliable?
2021 Audi S3s fail 5% of first MOT tests, 58% fewer MOT fails than the average car its age and mileage, ranking 1 of 8 S3 years (1,310 DVSA tests, 2022 to 2024).
What fails on a 2021 Audi S3 MOT?
Most often tyre tread below 1.6mm (0.61% of tests), tyre ply or cords exposed (0.31% of tests), lambda reading outside specified limits (0.31% of tests).
How many miles should a 2021 Audi S3 have done?
At its MOT aged about 3, a typical 2021 Audi S3 shows 27,868 miles. Much higher or lower is worth asking about.
What plate is a 2021 car?
A car first registered in 2021 carries a 70 plate (January–February 2021), or a 21 plate (March–August 2021), or a 71 plate (September–December 2021).
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