Mercedes-Benz GLS MOT reliability

Mercedes-Benz GLSs passed their MOT first time 86% of the time across 3,052 tests in 2025.

First-time pass rate

86%

MOTs analysed

3,052

Still licensed (GB)

–

Body type

Suv

Pass rate by year of first registration

Older cars fail more often, so compare a car with others of the same age. Years with very few MOTs can show extreme pass rates, even 0% or 100%, so give more weight to years with more tests.

In detail:

First registered

2022 diesel

357 MOTs

Passed first time 85%. Typical mileage 31,597 (most between 21,304 and 41,687).

2023: 100% → 2024: 88% → 2025: 85%

Most common failures

Condition: has ply or cords exposed (4.2%)
Condition: has a cut in excess of the requirements deep enough to reach the ply or cords (3.4%)
Tread depth below requirements of 1.6mm (2.8%)
Ball joint excessively worn (1.4%)
Registration plates: does not conform to the specified requirements (0.8%)

2022 hybrid

25 MOTs

These figures come from 25 MOT tests. That's a fairly small number of cars, so they may not be typical of these cars as a whole.

Passed first time 88%. Typical mileage 20,433 (most between 8,568 and 34,009).

2024: 100% → 2025: 88%

Most common failures

Condition: has a cut in excess of the requirements deep enough to reach the ply or cords (12.0%)

Where 2022 GLSs fail

Wheels & tyres

11.2%

Lights & electrics

1.7%

Suspension & axles

1.4%

Exhaust, emissions & leaks

0.6%

Visibility & wipers

0.6%

Steering

0.3%

Seat belts & other equipment

0.3%

Looking at a particular car?

See its own MOT history, mileage and red flags, compared with these figures. Free.

Based on 2025 initial MOT tests in DVSA's anonymised MOT dataset (cars and light vans). Contains public sector information licensed under the Open Government Licence v3.0. Model details: Vehicle data by VehiclesDB.