Mercedes-Benz B-Class MOT reliability

Mercedes-Benz B-Classs passed their MOT first time 70% of the time across 60,789 tests in 2025.

First-time pass rate

70%

MOTs analysed

60,789

Still licensed (GB)

–

Body type

Hatchback

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 petrol

3 MOTs

These figures come from only 3 MOT tests. With so few cars, a single pass or fail changes the percentages a lot, so treat them as a rough guide rather than a true average.

Passed first time 100%. Typical mileage 44,630 (most between 25,476 and 50,758).

2023: 100% → 2024: 100% → 2025: 100%

Most common failures

Looking at a particular car?

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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.