Mercedes-Benz Viano MOT reliability

Mercedes-Benz Vianos passed their MOT first time 66% of the time across 5,051 tests in 2025.

First-time pass rate

66%

MOTs analysed

5,051

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

2020 diesel

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 67%. Typical mileage 41,641 (most between 30,254 and 43,481).

2021: 100% → 2023: 50% → 2024: 100% → 2025: 67%

Most common failures

Attachment: fixing missing (33.3%)

Where 2020 Vianos fail

Wheels & tyres

33.3%

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.