2018 Audi A8 · 3,874 MOT tests
2018 Audi A8 reliability
2018 Audi A8s fail 7.2% of first MOT tests, 57% fewer MOT fails than the average car its age and mileage, ranking 11 of 16 A8 years (3,874 DVSA tests, 2022 to 2024).
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- first-time fail rate (all Audi A8s: 13.2%)
- 7.2%
- first-time fail rate (all Audi A8s: 13.2%)
- fails than cars of the same age and mileage
- 57% fewer
- fails than cars of the same age and mileage
- typical miles at its MOT, aged about 5
- 44,652
- typical miles at its MOT, aged about 5
- MOT tests, 2022 to 2024
- 3,874
- MOT tests, 2022 to 2024
Year on year
2018 against the years either side
- 2017 cars: 62% fewer MOT fails than the average car its age (the 2018 car does worse)
- 2019 cars: 62% fewer MOT fails than the average car its age (the 2018 car does worse)
- Weak spot: number plates and vin, 1.1% of tests fail here (351% above cars of the same age and mileage).
- Strong point: tyres, 38% fewer fails than comparable cars.
- Plates: a 2018 car carries a 67 plate (January–February 2018), or a 18 plate (March–August 2018), or a 68 plate (September–December 2018).
Common problems
What fails on a 2018 Audi A8
Fail rate by area
- Tyres3.4%
- Number plates and VIN1.1%
- Windscreen, wipers and mirrors0.9%
- Lights and electrics0.8%
- Brakes0.7%
- Exhaust, emissions and leaks0.4%
- Wheels0.3%
Average for cars of the same age and mileage
Top failures
Tyre cut reaching ply or cords 1.01%
A cut reaching the ply or cords weakens the tyre and can cause a burst, so it must be replaced.
Tyre ply or cords exposed 0.85%
Exposed ply or cords can let the tyre fail suddenly, so the tyre must be replaced before the car is driven.
Tyre tread below 1.6mm 0.49%
Tread below 1.6mm is illegal and reduces grip in wet conditions, so the tyre must be replaced.
Number plate does not meet standards 0.39%
The plate does not meet legal specifications, so it must be replaced with a compliant one before the car is driven.
Brake pads worn below 1.5mm 0.31%
Pads worn below 1.5mm lose stopping power and can damage discs, so replacement is needed before the car is driven.
Windscreen washer fluid insufficient 0.23%
Washers are not supplying enough liquid, so the windscreen cannot be cleared properly, which is a safety issue.
Common advisories
Tyre worn close to legal limit (6.97%) · Brake pads wearing thin (3.41%) · Brake disc pitted or scored (2.97%) · Tyre slightly damaged or cracking (2.74%) · Suspension arm pin/bush showing wear (1.6%) · Brake discs showing some wear (1.29%)
Other years
Every Audi A8 year
The full picture: Audi A8 reliability. Before you pay for any Audi A8, a Full Check (£9.99) shows finance, stolen and write-off records the MOT can't.
Source: DVSA anonymised MOT results, 2022 to 2024, class 4 normal tests.
Is a 2018 Audi A8 reliable?
2018 Audi A8s fail 7.2% of first MOT tests, 57% fewer MOT fails than the average car its age and mileage, ranking 11 of 16 A8 years (3,874 DVSA tests, 2022 to 2024).
What fails on a 2018 Audi A8 MOT?
Most often tyre cut reaching ply or cords (1.01% of tests), tyre ply or cords exposed (0.85% of tests), tyre tread below 1.6mm (0.49% of tests).
How many miles should a 2018 Audi A8 have done?
At its MOT aged about 5, a typical 2018 Audi A8 shows 44,652 miles. Much higher or lower is worth asking about.
What plate is a 2018 car?
A car first registered in 2018 carries a 67 plate (January–February 2018), or a 18 plate (March–August 2018), or a 68 plate (September–December 2018).
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