2021 Mercedes-Benz GLC · 3,867 MOT tests
2021 Mercedes-Benz GLC reliability
2021 Mercedes-Benz GLCs fail 6.7% of first MOT tests, 46% fewer MOT fails than the average car its age and mileage, ranking 1 of 7 GLC years (3,867 DVSA tests, 2022 to 2024).
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- first-time fail rate (all Mercedes-Benz GLCs: 11.3%)
- 6.7%
- first-time fail rate (all Mercedes-Benz GLCs: 11.3%)
- fails than cars of the same age and mileage
- 46% fewer
- fails than cars of the same age and mileage
- typical miles at its MOT, aged about 3
- 30,098
- typical miles at its MOT, aged about 3
- MOT tests, 2022 to 2024
- 3,867
- MOT tests, 2022 to 2024
Year on year
2021 against the years either side
- 2020 cars: 38% fewer MOT fails than the average car its age (the 2021 car does better)
- Strong point: tyres, 7% 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 Mercedes-Benz GLC
Fail rate by area
- Tyres4.3%
- Windscreen, wipers and mirrors0.8%
- Lights and electrics0.7%
- Brakes0.6%
- Number plates and VIN0.2%
- Exhaust, emissions and leaks0.2%
- Suspension0.1%
Average for cars of the same age and mileage
Top failures
Tyre cut reaching ply or cords 1.32%
A cut reaching the ply or cords weakens the tyre and can cause a burst, so it must be replaced.
Tyre tread below 1.6mm 0.72%
Tread below 1.6mm is illegal and reduces grip in wet conditions, so the tyre must be replaced.
Tyre ply or cords exposed 0.44%
Exposed ply or cords can let the tyre fail suddenly, so the tyre must be replaced before the car is driven.
Brake pads worn below 1.5mm 0.34%
Pads worn below 1.5mm lose stopping power and can damage discs, so replacement is needed before the car is driven.
Headlamp aim set too high 0.23%
Headlamps aimed too high can dazzle other drivers, and adjusting them is usually a quick job.
Brake pads worn to wear indicator 0.18%
Pads worn to the indicator are at their limit, reducing braking and needing immediate replacement.
Common advisories
Tyre worn close to legal limit (8.07%) · Brake pads wearing thin (2.72%) · Tyre slightly damaged or cracking (1.32%) · Child seat limits belt inspection (1.29%) · Nail in tyre, monitor (1.09%) · Tyre worn close to legal limit (1.01%)
Other years
Every Mercedes-Benz GLC year
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Source: DVSA anonymised MOT results, 2022 to 2024, class 4 normal tests.
Is a 2021 Mercedes-Benz GLC reliable?
2021 Mercedes-Benz GLCs fail 6.7% of first MOT tests, 46% fewer MOT fails than the average car its age and mileage, ranking 1 of 7 GLC years (3,867 DVSA tests, 2022 to 2024).
What fails on a 2021 Mercedes-Benz GLC MOT?
Most often tyre cut reaching ply or cords (1.32% of tests), tyre tread below 1.6mm (0.72% of tests), tyre ply or cords exposed (0.44% of tests).
How many miles should a 2021 Mercedes-Benz GLC have done?
At its MOT aged about 3, a typical 2021 Mercedes-Benz GLC shows 30,098 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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