Mercedes-Benz S-Class MOT reliability

Mercedes-Benz S-Classs passed their MOT first time 86% of the time across 14 tests in 2025. 21,088 are still licensed in Great Britain.

Example photo of a Mercedes-Benz S-Class — Photo: Alexander Migl · CC BY-SA 4.0 · Wikimedia Commons

These figures come from only 14 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.

First-time pass rate

86%

MOTs analysed

14

Still licensed (GB)

21,088

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

2007 petrol

1 MOT

Passed first time 0%. Typical mileage 104,456 (most between 104,456 and 104,456).

2010: 100% → 2011: 100% → 2012: 100% → 2013: 100% → 2014: 100% → 2015: 100% → 2016: 100% → 2017: 100% → 2018: 0% → 2019: 100% → 2020: 100% → 2021: 100% → 2022: 0% → 2024: 100% → 2025: 0%

Most common failures

Malfunction indicator lamp: inoperative or indicates a malfunction (100.0%)
Catalyst emissions: Lambda reading after 2nd fast idle outside specified limits (100.0%)
Wipers: does not clear the windscreen effectively (100.0%)

Where 2007 S-Classs fail

Exhaust, emissions & leaks

100.0%

Visibility & wipers

100.0%

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.