Mercedes-Benz S500 MOT reliability

Mercedes-Benz S500s passed their MOT first time 87% of the time across 335 tests in 2025.

First-time pass rate

87%

MOTs analysed

335

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

2022 hybrid

159 MOTs

Passed first time 87%. Typical mileage 33,561 (most between 22,530 and 46,734).

2022: 100% → 2023: 91% → 2024: 100% → 2025: 87%

Most common failures

Condition: has a bulge, caused by separation or partial failure of its structure (6.9%)
Condition: has a cut in excess of the requirements deep enough to reach the ply or cords (3.8%)
Malfunction indicator lamp: inoperative or indicates a malfunction (1.3%)
Washers: provides insufficient washer liquid (1.3%)
Condition: has ply or cords exposed (0.6%)

2022 petrol

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 0%. Typical mileage 27,281 (most between 27,281 and 27,281).

Most common failures

Condition: has a lump, caused by separation or partial failure of its structure (100.0%)

Where 2022 S500s fail

Wheels & tyres

10.7%

Visibility & wipers

1.9%

Exhaust, emissions & leaks

1.3%

Brakes

0.6%

Lights & electrics

0.6%

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.