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Mercedes-benz C vs Mercedes-benz C250: 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 C250
82%
MOT pass rate · 35 vehicles
More reliable
Verdict: On MOT pass rate, the Mercedes-benz C250 is the more reliable of the two — 82% pass first time versus 78%. It's one signal among several; check the full breakdown below.

Head to head

Measure Mercedes-benz C Mercedes-benz C250
MOT pass rate 78% 82% ✓
MOT failure rate 22% 18% ✓
Faults & advisories per test 1.7 ✓ 1.8
Dangerous-fault share 3% ✓ 4%
Average mileage 112,156 mi 95,468 mi
Sample size (vehicles) 675,043 35

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 C250

  1. Offside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  2. Oil leak, but not excessive (8.4.1 (a) (i))
  3. under-trays fitted obscuring some underside components
  4. covers fitted obscuring some components in the engine bay
  5. Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  6. Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))

Reliability FAQ

On MOT pass rate, the Mercedes-benz C250 is the more reliable of the two — 82% pass first time versus 78%. It's one signal among several; check the full breakdown below.

Full Mercedes-benz C report Full Mercedes-benz C250 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.