2020 BMW 4 Series · 10,815 MOT tests
2020 BMW 4 Series reliability
2020 BMW 4 Seriess fail 9.8% of first MOT tests, 21% fewer MOT fails than the average car its age and mileage, ranking 8 of 9 4 Series years (10,815 DVSA tests, 2022 to 2024).
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- first-time fail rate (all BMW 4 Seriess: 14.1%)
- 9.8%
- first-time fail rate (all BMW 4 Seriess: 14.1%)
- fails than cars of the same age and mileage
- 21% fewer
- fails than cars of the same age and mileage
- typical miles at its MOT, aged about 3
- 28,398
- typical miles at its MOT, aged about 3
- MOT tests, 2022 to 2024
- 10,815
- MOT tests, 2022 to 2024
Year on year
2020 against the years either side
- 2019 cars: 14% fewer MOT fails than the average car its age (the 2020 car does better)
- 2021 cars: 42% fewer MOT fails than the average car its age (the 2020 car does worse)
- Weak spot: tyres, 6.5% of tests fail here (45% above cars of the same age and mileage).
- Strong point: lights and electrics, 48% fewer fails than comparable cars.
- Plates: a 2020 car carries a 69 plate (January–February 2020), or a 20 plate (March–August 2020), or a 70 plate (September–December 2020).
Common problems
What fails on a 2020 BMW 4 Series
Fail rate by area
- Tyres6.5%
- Lights and electrics1.4%
- Brakes1.2%
- Windscreen, wipers and mirrors0.8%
- Wheels0.3%
- Exhaust, emissions and leaks0.2%
- Number plates and VIN0.2%
Average for cars of the same age and mileage
Top failures
Tyre cut reaching ply or cords 1.58%
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 1.13%
Exposed ply or cords can let the tyre fail suddenly, so the tyre must be replaced before the car is driven.
Tyre bulge from structural failure 0.92%
A bulge means the tyre's structure has failed and it could burst suddenly, so it must be replaced at once.
Tyre tread below 1.6mm 0.8%
Tread below 1.6mm is illegal and reduces grip in wet conditions, so the tyre must be replaced.
Brake pads worn below 1.5mm 0.42%
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 0.38%
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 (6.49%) · Brake pads wearing thin (3.63%) · Brake disc pitted or scored (1.66%) · Tyre slightly damaged or cracking (1.3%) · Tyre has a shallow cut (1.26%) · Nail in tyre, monitor (1.23%)
Other years
Every BMW 4 Series year
The full picture: BMW 4 Series reliability. Before you pay for any BMW 4 Series, 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 2020 BMW 4 Series reliable?
2020 BMW 4 Seriess fail 9.8% of first MOT tests, 21% fewer MOT fails than the average car its age and mileage, ranking 8 of 9 4 Series years (10,815 DVSA tests, 2022 to 2024).
What fails on a 2020 BMW 4 Series MOT?
Most often tyre cut reaching ply or cords (1.58% of tests), tyre ply or cords exposed (1.13% of tests), tyre bulge from structural failure (0.92% of tests).
How many miles should a 2020 BMW 4 Series have done?
At its MOT aged about 3, a typical 2020 BMW 4 Series shows 28,398 miles. Much higher or lower is worth asking about.
What plate is a 2020 car?
A car first registered in 2020 carries a 69 plate (January–February 2020), or a 20 plate (March–August 2020), or a 70 plate (September–December 2020).
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