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Common problems by part

Mercedes-Benz SLC road wheels problems

DVSA MOT tests 2022–2025 · 8,273 MOT tests · Updated

At 6 years, 0.4 in 100 MOT tests of the Mercedes-Benz SLC failed on road wheels, against 0.2 for all class 4 vehicles the same age (all test years; 8,273 MOT tests) [1].

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  • Against all class 4 vehicles the same age: about average for all class 4 vehicles the same age (all test years), 35 MOT tests with a fail
  • When it starts: clear of 1.2 times from 5 years and at every older age seen
  • Most common fail: Road wheel condition: fractured, 0.4 per 100 MOT tests

Figures are for the model as a whole, not for one car.

What the MOT tests show

What we know

0.4 fails per 100 MOT tests at 6 years, against 0.2 for all class 4 vehicles tested at 6 (all test years). That is about average.

Why it matters

A road wheels fail stops the car passing until it is fixed; the most common one is rated dangerous by DVSA.

What to check

Look for cracked or badly kerbed rims and check that every wheel nut is present; a vibration through the wheel at speed points to a bent rim or balance.

Mercedes-Benz SLC road wheels fails by age

Mercedes-Benz SLC road wheels fails per 100 MOT tests by ageSolid line: the Mercedes-Benz SLC. Dashed line: all cars the same age. The table below lists every value.00.53 years: 0.2 per 100 (all cars 0.1), 1,838 MOT tests34 years: 0.2 per 100 (all cars 0.2), 3,349 MOT tests45 years: 0.4 per 100 (all cars 0.2), 6,599 MOT tests56 years: 0.4 per 100 (all cars 0.2), 8,273 MOT tests67 years: 0.6 per 100 (all cars 0.3), 7,266 MOT tests78 years: 0.8 per 100 (all cars 0.3), 5,715 MOT tests89 years: 0.8 per 100 (all cars 0.4), 2,266 MOT tests9
Fails per 100 MOT tests by age, all first-use years pooled. Mercedes-Benz SLC All class 4 vehicles the same age
AgeMOT testsFails per 100All class 4 vehicles the same age
31,8380.20.1
43,3490.20.2
56,5990.40.2
68,2730.40.2
77,2660.60.3
85,7150.80.3
92,2660.80.4

All first-use years of the Mercedes-Benz SLC pooled at each age, against all class 4 vehicles at that age over all 2022–2025 test years.

What fails in the road wheels at 6 years

Fails

Advisories (not fails)

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  • What similar cars did at their next MOT
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How to check on a test drive

Look for cracked or badly kerbed rims and check that every wheel nut is present; a vibration through the wheel at speed points to a bent rim or balance.

The most common advisory here in MOT records: Road wheel condition: slightly distorted.

Check one Mercedes-Benz SLC, not the average

The figures here describe Mercedes-Benz SLC cars as a group. These free tools answer for one car. Each line says what the tool reads.

Other Mercedes-Benz SLC problems

Road wheels on rival models

Questions people ask

Does the Mercedes-Benz SLC have more road wheels problems than other cars?

0.4 in 100 MOT tests at 6 years, against 0.2 for all class 4 vehicles the same age: about average by our test (all test years; 8,273 MOT tests).

How common are Mercedes-Benz SLC road wheels problems?

0.4 in 100 MOT tests at 6 years failed on road wheels, against 0.2 for all class 4 vehicles the same age (all test years; 8,273 MOT tests).

What is the most common Mercedes-Benz SLC road wheels fail?

0.4 in 100 MOT tests at 6 years: Road wheel condition: fractured (29 MOT tests with it).

At what age do Mercedes-Benz SLC road wheels fails start?

5 years: from then on the rate stays clear of 1.2 times all class 4 vehicles the same age at every age seen, 30,119 MOT tests.

Sources

  1. Driver and Vehicle Standards Agency, Anonymised MOT tests and results, 2022 to 2025. DVSA MOT data, Open Government Licence v3.0, 35,306 MOT tests. Accessed 7 Oct 2026.

Parts: against all class 4 vehicles at the same age, all 2022–2025 test years pooled, not adjusted for mileage. Breakdowns and non-MOT faults are not in this data. How we compare