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Mercedes-benz C vs Mercedes-benz C250d: 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 C250d
83%
MOT pass rate · 5 vehicles
Verdict: On MOT pass rate the Mercedes-benz C (78%) and Mercedes-benz C250d (83%) 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 C250d
MOT pass rate 78% 83% ✓
MOT failure rate 22% 17% ✓
Faults & advisories per test 1.7 0.8 ✓
Dangerous-fault share 3% ✓ 12%
Average mileage 112,156 mi 106,499 mi
Sample size (vehicles) 675,043 5

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 C250d

  1. Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  2. Offside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  3. Offside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
  4. Nearside Front Lower Shock absorbers has a slightly worn bush (5.3.2 (c))
  5. UNDERTRAYS FITTED
  6. Nearside Front Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))

Reliability FAQ

On MOT pass rate the Mercedes-benz C (78%) and Mercedes-benz C250d (83%) 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 C250d 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.