2021 BMW X4 · 1,134 MOT tests
2021 BMW X4 reliability
2021 BMW X4s fail 7.9% of first MOT tests, 35% fewer MOT fails than the average car its age and mileage, ranking 5 of 8 X4 years (1,134 DVSA tests, 2022 to 2024).
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- first-time fail rate (all BMW X4s: 13%)
- 7.9%
- first-time fail rate (all BMW X4s: 13%)
- fails than cars of the same age and mileage
- 35% fewer
- fails than cars of the same age and mileage
- typical miles at its MOT, aged about 3
- 29,680
- typical miles at its MOT, aged about 3
- MOT tests, 2022 to 2024
- 1,134
- MOT tests, 2022 to 2024
Year on year
2021 against the years either side
- 2020 cars: 39% fewer MOT fails than the average car its age (the 2021 car does worse)
- Strong point: lights and electrics, 56% 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 BMW X4
Fail rate by area
- Tyres2.9%
- Windscreen, wipers and mirrors2.5%
- Lights and electrics1.1%
- Exhaust, emissions and leaks0.7%
- Brakes0.6%
- Number plates and VIN0.4%
- Seat belts and airbags0.2%
Average for cars of the same age and mileage
Top failures
Tyre cut reaching ply or cords 0.97%
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 0.53%
Exposed ply or cords can let the tyre fail suddenly, so the tyre must be replaced before the car is driven.
Diesel engine warning light faulty 0.44%
A lit or non-working engine warning light can hide faults, so diagnosis is needed before buying.
Wiper blade not clearing windscreen 0.44%
Wipers that do not clear the windscreen reduce visibility in rain, which is a safety risk, so replace them.
Tyre tread below 1.6mm 0.26%
Tread below 1.6mm is illegal and reduces grip in wet conditions, so the tyre must be replaced.
Headlamp aim set too high 0.26%
Headlamps aimed too high can dazzle other drivers, and adjusting them is usually a quick job.
Common advisories
Tyre worn close to legal limit (5.2%) · Tyre slightly damaged or cracking (1.59%) · Tyre has a shallow cut (0.62%) · Brake pads wearing thin (0.62%) · Tyre worn close to legal limit (0.62%) · Nail in tyre, monitor (0.35%)
Is a 2021 BMW X4 reliable?
2021 BMW X4s fail 7.9% of first MOT tests, 35% fewer MOT fails than the average car its age and mileage, ranking 5 of 8 X4 years (1,134 DVSA tests, 2022 to 2024).
What fails on a 2021 BMW X4 MOT?
Most often tyre cut reaching ply or cords (0.97% of tests), tyre ply or cords exposed (0.53% of tests), diesel engine warning light faulty (0.44% of tests).
How many miles should a 2021 BMW X4 have done?
At its MOT aged about 3, a typical 2021 BMW X4 shows 29,680 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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