2018 Mercedes-Benz GLA · 58,170 MOT tests
2018 Mercedes-Benz GLA reliability
2018 Mercedes-Benz GLAs fail 11.8% of first MOT tests, 21% fewer MOT fails than the average car its age and mileage, ranking 7 of 8 GLA years (58,170 DVSA tests, 2022 to 2024).
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- first-time fail rate (all Mercedes-Benz GLAs: 13.4%)
- 11.8%
- first-time fail rate (all Mercedes-Benz GLAs: 13.4%)
- 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 5
- 36,226
- typical miles at its MOT, aged about 5
- MOT tests, 2022 to 2024
- 58,170
- MOT tests, 2022 to 2024
Year on year
2018 against the years either side
- 2017 cars: 21% fewer MOT fails than the average car its age (the 2018 car does worse)
- 2019 cars: 15% fewer MOT fails than the average car its age (the 2018 car does better)
- Weak spot: body, chassis and structure, 1.3% of tests fail here (129% above cars of the same age and mileage).
- Strong point: lights and electrics, 34% 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 Mercedes-Benz GLA
Fail rate by area
- Tyres4.5%
- Lights and electrics2.4%
- Windscreen, wipers and mirrors2.2%
- Brakes1.9%
- Body, chassis and structure1.3%
- Exhaust, emissions and leaks0.8%
- Suspension0.7%
Average for cars of the same age and mileage
Top failures
Tyre tread below 1.6mm 1.35%
Tread below 1.6mm is illegal and reduces grip in wet conditions, so the tyre must be replaced.
Brake pads worn below 1.5mm 1%
Pads worn below 1.5mm lose stopping power and can damage discs, so replacement is needed before the car is driven.
Tyre cut reaching ply or cords 1%
A cut reaching the ply or cords weakens the tyre and can cause a burst, so it must be replaced.
CV joint boot split or insecure 0.88%
A split CV boot lets dirt in and grease out, so the joint wears and may need full replacement.
Windscreen washer fluid insufficient 0.75%
Washers are not supplying enough liquid, so the windscreen cannot be cleared properly, which is a safety issue.
Wiper blade not clearing windscreen 0.75%
Wipers that do not clear the windscreen reduce visibility in rain, which is a safety risk, so replace them.
Common advisories
Tyre worn close to legal limit (11.27%) · Tyre slightly damaged or cracking (6.95%) · Brake pads wearing thin (6.72%) · Brake disc pitted or scored (3.32%) · Child seat limits belt inspection (2.25%) · Brake discs showing some wear (2.18%)
Other years
Every Mercedes-Benz GLA year
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Source: DVSA anonymised MOT results, 2022 to 2024, class 4 normal tests.
Is a 2018 Mercedes-Benz GLA reliable?
2018 Mercedes-Benz GLAs fail 11.8% of first MOT tests, 21% fewer MOT fails than the average car its age and mileage, ranking 7 of 8 GLA years (58,170 DVSA tests, 2022 to 2024).
What fails on a 2018 Mercedes-Benz GLA MOT?
Most often tyre tread below 1.6mm (1.35% of tests), brake pads worn below 1.5mm (1% of tests), tyre cut reaching ply or cords (1% of tests).
How many miles should a 2018 Mercedes-Benz GLA have done?
At its MOT aged about 5, a typical 2018 Mercedes-Benz GLA shows 36,226 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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