Auto Trail Mercedes-Benz MOT reliability

Auto Trail Mercedes-Benzs passed their MOT first time 83% of the time across 66 tests in 2025.

These figures come from 66 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

83%

MOTs analysed

66

Still licensed (GB)

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Body type

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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

2004 diesel

9 MOTs

These figures come from only 9 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 78%. Typical mileage 65,726 (most between 50,479 and 77,409).

2007: 100% → 2008: 89% → 2009: 89% → 2010: 80% → 2011: 90% → 2012: 73% → 2013: 82% → 2014: 70% → 2015: 100% → 2016: 78% → 2017: 88% → 2018: 78% → 2019: 86% → 2020: 88% → 2021: 73% → 2022: 78% → 2023: 88% → 2024: 100% → 2025: 78%

Most common failures

Headlamp aim: too high (11.1%)
Pre 01/07/2008 Non turbo: emissions exceed manufacturer's specified limit (11.1%)

Where 2004 Mercedes-Benzs fail

Lights & electrics

11.1%

Exhaust, emissions & leaks

11.1%

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.