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Mercedes-benz C vs Mercedes-benz Ml 500: reliability comparison

MOT pass rates, common faults and mileage compared from real UK MOT data.

Mercedes-benz C
78%
MOT pass rate · 675,043 vehicles
Mercedes-benz Ml 500
76%
MOT pass rate · 1 vehicles
Verdict: On MOT pass rate the Mercedes-benz C (78%) and Mercedes-benz Ml 500 (76%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Mercedes-benz C Mercedes-benz Ml 500
MOT pass rate 78% ✓ 76%
MOT failure rate 22% ✓ 24%
Faults & advisories per test 1.7 ✓ 1.8
Dangerous-fault share 3% ✓ 5%
Average mileage 112,156 mi 107,009 mi
Sample size (vehicles) 675,043 1

Most common faults

Mercedes-benz C

  1. Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
  2. Offside Rear Tyre worn close to the legal limit (4.1.E.1)
  3. Offside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  4. Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  5. Under-trays fitted obscuring some underside components
  6. Nearside Front Tyre worn close to the legal limit (4.1.E.1)

Mercedes-benz Ml 500

  1. Nearside Front Outer Drive shaft joint constant velocity boot severely deteriorated (6.1.7 (g) (i))
  2. Oil leak, but not excessive (8.4.1 (a) (i))
  3. Offside Rear Tyre tread depth below requirements of 1.6mm (4.1.E.1)
  4. Both front tyres worn on inner edges
  5. Front Brake hose slightly deteriorated both (1.1.12 (b) (ii))
  6. Nearside Front Tyre tread depth below requirements of 1.6mm (4.1.E.1)

Reliability FAQ

On MOT pass rate the Mercedes-benz C (78%) and Mercedes-benz Ml 500 (76%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Mercedes-benz C report Full Mercedes-benz Ml 500 report Most reliable cars

Pass rates are computed over completed (pass/fail) MOT tests. Reliability also depends on age, mileage and upkeep — see each model's page for the full picture.