2018 Mercedes-Benz G-Class · 1,202 MOT tests
2018 Mercedes-Benz G-Class reliability
2018 Mercedes-Benz G-Classs fail 8.7% of first MOT tests, 40% fewer MOT fails than the average car its age and mileage, ranking 1 of 1 G-Class years (1,202 DVSA tests, 2022 to 2024).
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- first-time fail rate (all Mercedes-Benz G-Classs: 13.7%)
- 8.7%
- first-time fail rate (all Mercedes-Benz G-Classs: 13.7%)
- 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 5
- 32,577
- typical miles at its MOT, aged about 5
- MOT tests, 2022 to 2024
- 1,202
- MOT tests, 2022 to 2024
Year on year
2018 against the years either side
- 2017 cars: 11% fewer MOT fails than the average car its age (the 2018 car does better)
- 2019 cars: 50% fewer MOT fails than the average car its age (the 2018 car does worse)
- Strong point: windscreen, wipers and mirrors, 53% 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 G-Class
Fail rate by area
- Tyres3%
- Lights and electrics2.7%
- Windscreen, wipers and mirrors1.5%
- Suspension1.4%
- Steering0.7%
- Brakes0.6%
- Number plates and VIN0.4%
Average for cars of the same age and mileage
Top failures
Tyre cut reaching ply or cords 1.41%
A cut reaching the ply or cords weakens the tyre and can cause a burst, so it must be replaced.
Headlamp aim set too high 0.92%
Headlamps aimed too high can dazzle other drivers, and adjusting them is usually a quick job.
Wiper blade not clearing windscreen 0.5%
Wipers that do not clear the windscreen reduce visibility in rain, which is a safety risk, so replace them.
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.
Drag link ball joint has excessive play 0.42%
Excess play in a steering joint can make the car feel vague and wander, and it is a safety-critical repair.
Coil spring fractured or broken 0.33%
A broken coil spring can leave the car sitting low or unstable, so it must be replaced before driving.
Common advisories
Tyre worn close to legal limit (4.83%) · Brake pads wearing thin (3%) · Nail in tyre, monitor (1.41%) · Tyre has a shallow cut (1.25%) · Brake disc pitted or scored (1.16%) · Child seat limits belt inspection (1%)
Other years
Every Mercedes-Benz G-Class year
The full picture: Mercedes-Benz G-Class reliability. Before you pay for any Mercedes-Benz G-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 2018 Mercedes-Benz G-Class reliable?
2018 Mercedes-Benz G-Classs fail 8.7% of first MOT tests, 40% fewer MOT fails than the average car its age and mileage, ranking 1 of 1 G-Class years (1,202 DVSA tests, 2022 to 2024).
What fails on a 2018 Mercedes-Benz G-Class MOT?
Most often tyre cut reaching ply or cords (1.41% of tests), headlamp aim set too high (0.92% of tests), wiper blade not clearing windscreen (0.5% of tests).
How many miles should a 2018 Mercedes-Benz G-Class have done?
At its MOT aged about 5, a typical 2018 Mercedes-Benz G-Class shows 32,577 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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