Mercedes-Benz A-Class MOT reliability

Mercedes-Benz A-Classs passed their MOT first time 54% of the time across 70 tests in 2025. 378,842 are still licensed in Great Britain.

Example photo of a Mercedes-Benz A-Class — Photo: Navigator84 · CC BY-SA 4.0 · Wikimedia Commons

These figures come from 70 MOT tests. That's a fairly small number of cars, so they may not be typical of these cars as a whole.

First-time pass rate

54%

MOTs analysed

70

Still licensed (GB)

378,842

Body type

–

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

2010 petrol

11 MOTs

These figures come from only 11 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 73%. Typical mileage 73,729 (most between 58,430 and 94,676).

2012: 100% → 2013: 89% → 2014: 100% → 2015: 79% → 2016: 67% → 2017: 77% → 2018: 71% → 2019: 77% → 2020: 71% → 2021: 62% → 2022: 69% → 2023: 79% → 2024: 63% → 2025: 73%

Most common failures

Headlamp: not working on dipped beam (18.2%)
Ball joint excessively worn (9.1%)
Rigid brake pipes: leaking on a hydraulic braking system (9.1%)
Side repeaters: not working (9.1%)

2010 diesel

1 MOT

These figures come from only 1 MOT test. 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 74,998 (most between 74,998 and 74,998).

2013: 100% → 2014: 100% → 2015: 100% → 2016: 100% → 2017: 100% → 2018: 100% → 2019: 100% → 2020: 0% → 2021: 0% → 2022: 100% → 2024: 0% → 2025: 100%

Most common failures

Where 2010 A-Classs fail

Lights & electrics

27.3%

Brakes

9.1%

Suspension & axles

9.1%

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.