2020 Mercedes-Benz X-Class · 1,767 MOT tests
2020 Mercedes-Benz X-Class reliability
2020 Mercedes-Benz X-Classs fail 14.4% of first MOT tests, 3% fewer MOT fails than the average car its age and mileage, ranking 2 of 3 X-Class years (1,767 DVSA tests, 2022 to 2024).
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- first-time fail rate (all Mercedes-Benz X-Classs: 17.1%)
- 14.4%
- first-time fail rate (all Mercedes-Benz X-Classs: 17.1%)
- fails than cars of the same age and mileage
- 3% fewer
- fails than cars of the same age and mileage
- typical miles at its MOT, aged about 3
- 40,289
- typical miles at its MOT, aged about 3
- MOT tests, 2022 to 2024
- 1,767
- MOT tests, 2022 to 2024
Year on year
2020 against the years either side
- 2019 cars: 3% fewer MOT fails than the average car its age (the 2020 car does worse)
- Weak spot: number plates and vin, 1.2% of tests fail here (410% above cars of the same age and mileage).
- Strong point: tyres, 47% 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 Mercedes-Benz X-Class
Fail rate by area
- Brakes4.6%
- Lights and electrics3.1%
- Windscreen, wipers and mirrors2.9%
- Tyres2.7%
- Exhaust, emissions and leaks1.7%
- Seat belts and airbags1.5%
- Body, chassis and structure1.2%
Average for cars of the same age and mileage
Top failures
Wiper blade not clearing windscreen 1.41%
Wipers that do not clear the windscreen reduce visibility in rain, which is a safety risk, so replace them.
Diesel engine warning light faulty 1.3%
A lit or non-working engine warning light can hide faults, so diagnosis is needed before buying.
Parking brake efficiency below minimum 1.19%
The parking brake holds the car less well than required, so it may roll on a slope and needs repair.
Brake pads worn below 1.5mm 1.02%
Pads worn below 1.5mm lose stopping power and can damage discs, so replacement is needed before the car is driven.
Parking brake inoperative on one side 0.91%
The parking brake does not work on one side, so the car may not hold on a slope and needs repair.
Airbag warning lamp shows fault 0.85%
A lit airbag warning means the airbag system may not deploy in a crash, so it needs diagnosing and repairing.
Common advisories
Tyre worn close to legal limit (5.09%) · Brake pads wearing thin (4.02%) · Brake disc pitted or scored (1.81%) · Brake discs showing some wear (1.81%) · Nail in tyre, monitor (1.3%) · Tyre worn close to legal limit (1.25%)
Other years
Every Mercedes-Benz X-Class year
The full picture: Mercedes-Benz X-Class reliability. Before you pay for any Mercedes-Benz X-Class, 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 Mercedes-Benz X-Class reliable?
2020 Mercedes-Benz X-Classs fail 14.4% of first MOT tests, 3% fewer MOT fails than the average car its age and mileage, ranking 2 of 3 X-Class years (1,767 DVSA tests, 2022 to 2024).
What fails on a 2020 Mercedes-Benz X-Class MOT?
Most often wiper blade not clearing windscreen (1.41% of tests), diesel engine warning light faulty (1.3% of tests), parking brake efficiency below minimum (1.19% of tests).
How many miles should a 2020 Mercedes-Benz X-Class have done?
At its MOT aged about 3, a typical 2020 Mercedes-Benz X-Class shows 40,289 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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