2017 Mercedes-Benz GLS · 2,259 MOT tests
2017 Mercedes-Benz GLS reliability
2017 Mercedes-Benz GLSs fail 11.2% of first MOT tests, 40% fewer MOT fails than the average car its age and mileage, ranking 2 of 5 GLS years (2,259 DVSA tests, 2022 to 2024).
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- first-time fail rate (all Mercedes-Benz GLSs: 11.1%)
- 11.2%
- first-time fail rate (all Mercedes-Benz GLSs: 11.1%)
- fails than cars of the same age and mileage
- 40% fewer
- fails than cars of the same age and mileage
- typical miles at its MOT, aged about 6
- 51,996
- typical miles at its MOT, aged about 6
- MOT tests, 2022 to 2024
- 2,259
- MOT tests, 2022 to 2024
Year on year
2017 against the years either side
- 2016 cars: 36% fewer MOT fails than the average car its age (the 2017 car does better)
- 2018 cars: 26% fewer MOT fails than the average car its age (the 2017 car does better)
- Weak spot: number plates and vin, 1% of tests fail here (293% above cars of the same age and mileage).
- Strong point: windscreen, wipers and mirrors, 62% fewer fails than comparable cars.
- Plates: a 2017 car carries a 66 plate (January–February 2017), or a 17 plate (March–August 2017), or a 67 plate (September–December 2017).
Common problems
What fails on a 2017 Mercedes-Benz GLS
Fail rate by area
- Tyres6.4%
- Brakes1.5%
- Windscreen, wipers and mirrors1.3%
- Number plates and VIN1%
- Lights and electrics0.9%
- Exhaust, emissions and leaks0.5%
- Body, chassis and structure0.5%
Average for cars of the same age and mileage
Top failures
Tyre tread below 1.6mm 2.08%
Tread below 1.6mm is illegal and reduces grip in wet conditions, so the tyre must be replaced.
Tyre ply or cords exposed 1.59%
Exposed ply or cords can let the tyre fail suddenly, so the tyre must be replaced before the car is driven.
Tyre cut reaching ply or cords 1.59%
A cut reaching the ply or cords weakens the tyre and can cause a burst, so it must be replaced.
Number plate does not meet standards 0.8%
The plate does not meet legal specifications, so it must be replaced with a compliant one before the car is driven.
Brake pads worn below 1.5mm 0.53%
Pads worn below 1.5mm lose stopping power and can damage discs, so replacement is needed before the car is driven.
Tyre bulge from structural failure 0.49%
A bulge means the tyre's structure has failed and it could burst suddenly, so it must be replaced at once.
Common advisories
Tyre worn close to legal limit (10.62%) · Brake pads wearing thin (5.09%) · Brake disc pitted or scored (2.57%) · Tyre worn close to legal limit (2.35%) · Brake discs showing some wear (2.3%) · Child seat limits belt inspection (2.04%)
Other years
Every Mercedes-Benz GLS year
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Source: DVSA anonymised MOT results, 2022 to 2024, class 4 normal tests.
Is a 2017 Mercedes-Benz GLS reliable?
2017 Mercedes-Benz GLSs fail 11.2% of first MOT tests, 40% fewer MOT fails than the average car its age and mileage, ranking 2 of 5 GLS years (2,259 DVSA tests, 2022 to 2024).
What fails on a 2017 Mercedes-Benz GLS MOT?
Most often tyre tread below 1.6mm (2.08% of tests), tyre ply or cords exposed (1.59% of tests), tyre cut reaching ply or cords (1.59% of tests).
How many miles should a 2017 Mercedes-Benz GLS have done?
At its MOT aged about 6, a typical 2017 Mercedes-Benz GLS shows 51,996 miles. Much higher or lower is worth asking about.
What plate is a 2017 car?
A car first registered in 2017 carries a 66 plate (January–February 2017), or a 17 plate (March–August 2017), or a 67 plate (September–December 2017).
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