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Mercedes-benz B 250 vs Mercedes-benz C: reliability comparison

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

Mercedes-benz B 250
50%
MOT pass rate · 1 vehicles
Mercedes-benz C
78%
MOT pass rate · 675,043 vehicles
Verdict: On MOT pass rate the Mercedes-benz B 250 (50%) and Mercedes-benz C (78%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Mercedes-benz B 250 Mercedes-benz C
MOT pass rate 50% 78% ✓
MOT failure rate 50% 22% ✓
Faults & advisories per test 0.0 ✓ 1.7
Dangerous-fault share — ✓ 3%
Average mileage 63,277 mi 112,156 mi
Sample size (vehicles) 1 675,043

Most common faults

Mercedes-benz B 250

  1. Headlamp aim too high both side (4.1.2 (a))

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)

Reliability FAQ

On MOT pass rate the Mercedes-benz B 250 (50%) and Mercedes-benz C (78%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Mercedes-benz B 250 report Full Mercedes-benz C 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.