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Mercedes-Benz B-Class road wheels problems

DVSA MOT tests 2022–2025 · 27,268 MOT tests · Updated

At 10 years, 1.0 in 100 MOT tests of the Mercedes-Benz B-Class failed on road wheels, against 0.4 for all class 4 vehicles the same age (all test years; 27,268 MOT tests) [1].

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  • Against all class 4 vehicles the same age: fails 2.3–2.9× as often as all class 4 vehicles the same age (all test years), 275 MOT tests with a fail
  • When it starts: clear of 1.2 times from 15 years and at every older age seen
  • Most common fail: Road wheel condition: fractured, 0.6 per 100 MOT tests

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

What the MOT tests show

What we know

1.0 fails per 100 MOT tests at 10 years, against 0.4 for all class 4 vehicles tested at 10 (all test years). The Mercedes-Benz B-Class fails more often here.

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 B-Class road wheels fails by age

Mercedes-Benz B-Class road wheels fails per 100 MOT tests by ageSolid line: the Mercedes-Benz B-Class. Dashed line: all cars the same age. The table below lists every value.00.513 years: 0.1 per 100 (all cars 0.1), 10,576 MOT tests34 years: 0.2 per 100 (all cars 0.2), 13,190 MOT tests5 years: 0.3 per 100 (all cars 0.2), 16,988 MOT tests56 years: 0.4 per 100 (all cars 0.2), 19,508 MOT tests7 years: 0.5 per 100 (all cars 0.3), 20,864 MOT tests78 years: 0.4 per 100 (all cars 0.3), 25,189 MOT tests9 years: 0.7 per 100 (all cars 0.4), 26,796 MOT tests910 years: 1.0 per 100 (all cars 0.4), 27,268 MOT tests11 years: 1.0 per 100 (all cars 0.4), 25,350 MOT tests1112 years: 1.2 per 100 (all cars 0.5), 21,871 MOT tests13 years: 1.0 per 100 (all cars 0.5), 19,379 MOT tests1314 years: 0.8 per 100 (all cars 0.6), 17,229 MOT tests15 years: 0.9 per 100 (all cars 0.6), 16,318 MOT tests1516 years: 0.9 per 100 (all cars 0.6), 13,766 MOT tests17 years: 1.0 per 100 (all cars 0.6), 8,986 MOT tests1718 years: 1.2 per 100 (all cars 0.5), 4,909 MOT tests19 years: 1.2 per 100 (all cars 0.5), 2,045 MOT tests19
Fails per 100 MOT tests by age, all first-use years pooled. Mercedes-Benz B-Class All class 4 vehicles the same age Shaded: over 18 years, survivors only.
AgeMOT testsFails per 100All class 4 vehicles the same age
310,5760.10.1
413,1900.20.2
516,9880.30.2
619,5080.40.2
720,8640.50.3
825,1890.40.3
926,7960.70.4
1027,2681.00.4
1125,3501.00.4
1221,8711.20.5
1319,3791.00.5
1417,2290.80.6
1516,3180.90.6
1613,7660.90.6
178,9861.00.6
184,9091.20.5
19*2,0451.20.5

All first-use years of the Mercedes-Benz B-Class pooled at each age, against all class 4 vehicles at that age over all 2022–2025 test years. * Only survivors are still tested at this age.

What fails in the road wheels at 10 years

Fails

Advisories (not fails)

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By engine and fuel

  • 1.5 diesel: 0.6 per 100 at 10 years, about average for diesel class 4 vehicles the same age (all test years; 8,654 MOT tests)
  • 2.0 diesel: 0.9 per 100 at 14 years, about average for diesel class 4 vehicles the same age (all test years; 8,429 MOT tests)

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 B-Class, not the average

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

Other Mercedes-Benz B-Class problems

Road wheels on rival models

Questions people ask

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

2.3 to 2.9 times the road wheels fail rate of all class 4 vehicles the same age at 10 years (all test years), from 27,268 MOT tests. The interval is clear of 1.2 in the same direction at 4 of the 17 ages seen (ages up to 18 with at least 100 MOT tests with a fail).

How common are Mercedes-Benz B-Class road wheels problems?

1.0 in 100 MOT tests at 10 years failed on road wheels, against 0.4 for all class 4 vehicles the same age (all test years; 27,268 MOT tests).

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

0.6 in 100 MOT tests at 10 years: Road wheel condition: fractured (158 MOT tests with it).

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

15 years: from then on the rate stays clear of 1.2 times all class 4 vehicles the same age at every age seen, 46,024 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, 290,232 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