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Common problems by part

Mercedes-Benz CLA road wheels problems

DVSA MOT tests 2022–2025 · 39,186 MOT tests · Updated

At 3 years, 0.4 in 100 MOT tests of the Mercedes-Benz CLA failed on road wheels, against 0.1 for all class 4 vehicles the same age (all test years; 39,186 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), 151 MOT tests with a fail
  • When it starts: clear of 1.2 times from 3 years and at every older age seen
  • Most common fail: Road wheel attachment: fixing missing, 0.2 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 3 years, against 0.1 for all class 4 vehicles tested at 3 (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 major 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 CLA road wheels fails by age

Mercedes-Benz CLA road wheels fails per 100 MOT tests by ageSolid line: the Mercedes-Benz CLA. Dashed line: all cars the same age. The table below lists every value.00.511.53 years: 0.4 per 100 (all cars 0.1), 39,186 MOT tests34 years: 0.5 per 100 (all cars 0.2), 35,418 MOT tests45 years: 0.7 per 100 (all cars 0.2), 33,319 MOT tests56 years: 0.9 per 100 (all cars 0.2), 33,041 MOT tests67 years: 1.1 per 100 (all cars 0.3), 31,680 MOT tests78 years: 1.0 per 100 (all cars 0.3), 27,549 MOT tests89 years: 1.1 per 100 (all cars 0.4), 21,324 MOT tests910 years: 1.1 per 100 (all cars 0.4), 13,326 MOT tests1011 years: 1.4 per 100 (all cars 0.4), 6,447 MOT tests1112 years: 1.4 per 100 (all cars 0.5), 2,095 MOT tests12
Fails per 100 MOT tests by age, all first-use years pooled. Mercedes-Benz CLA All class 4 vehicles the same age
AgeMOT testsFails per 100All class 4 vehicles the same age
339,1860.40.1
435,4180.50.2
533,3190.70.2
633,0410.90.2
731,6801.10.3
827,5491.00.3
921,3241.10.4
1013,3261.10.4
116,4471.40.4
122,0951.40.5

All first-use years of the Mercedes-Benz CLA 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 3 years

Fails

  • Road wheel attachment: fixing missing: 0.2 fails per 100 MOT tests, all class 4 vehicles 0.1. Replace missing wheel nut or bolt: estimated £10–£59 (0.1–0.5 h at £78/h (ONS local-garage repair quotes, 1,058 quotes from 65 garages, Sep 2025 to Aug 2026) + parts £2–£20) Road wheel fixing missing MOT fail
  • Road wheel condition: fractured: 0.2 fails per 100 MOT tests, all class 4 vehicles 0.0. Road wheel fractured MOT fail

Advisories (not fails)

Replace missing wheel nut or bolt cost

Repair figures are estimates, not quotes: how we estimate repair costs.

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  • Model risks for this year and fuel
  • What similar cars did at their next MOT
  • Repairs ahead
  • Viewing checklist

See a sample report

By engine and fuel

  • 2.1 diesel: 1.3 per 100 at 7 years, about average for diesel class 4 vehicles the same age (all test years; 18,918 MOT tests)
  • 1.6 petrol: 0.5 per 100 at 3 years, about average for petrol class 4 vehicles the same age (all test years; 2,444 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 CLA, not the average

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

Other Mercedes-Benz CLA problems

Road wheels on rival models

Questions people ask

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

0.4 in 100 MOT tests at 3 years, against 0.1 for all class 4 vehicles the same age: about average by our test (all test years; 39,186 MOT tests).

How common are Mercedes-Benz CLA road wheels problems?

0.4 in 100 MOT tests at 3 years failed on road wheels, against 0.1 for all class 4 vehicles the same age (all test years; 39,186 MOT tests).

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

0.2 in 100 MOT tests at 3 years: Road wheel attachment: fixing missing (76 MOT tests with it).

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

3 years: from then on the rate stays clear of 1.2 times all class 4 vehicles the same age at every age seen, 243,385 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, 243,385 MOT tests. Accessed 7 Oct 2026.
  2. Office for National Statistics, Consumer price inflation, local price quotes (car repair items). ONS price quotes, series 610236. 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