Skip to content

Mercedes-benz A-class vs Mercedes-benz C 350: reliability comparison

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

Mercedes-benz A-class
78%
MOT pass rate · 362,612 vehicles
Mercedes-benz C 350
80%
MOT pass rate · 3 vehicles
Verdict: On MOT pass rate the Mercedes-benz A-class (78%) and Mercedes-benz C 350 (80%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Mercedes-benz A-class Mercedes-benz C 350
MOT pass rate 78% 80% ✓
MOT failure rate 22% 20% ✓
Faults & advisories per test 1.6 ✓ 1.7
Dangerous-fault share 3% 0% ✓
Average mileage 86,210 mi 70,768 mi
Sample size (vehicles) 362,612 3

Most common faults

Mercedes-benz A-class

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

Mercedes-benz C 350

  1. Nearside Rear Child Seat fitted not allowing full inspection of adult belt
  2. Windscreen damaged but not adversely affecting driver's view (3.2 (a) (i))
  3. Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  4. Offside Front Brake pipe corroded, covered in grease or other material (1.1.11 (c))
  5. Nearside Front Brake pipe corroded, covered in grease or other material (1.1.11 (c))
  6. Offside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))

Reliability FAQ

On MOT pass rate the Mercedes-benz A-class (78%) and Mercedes-benz C 350 (80%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Mercedes-benz A-class report Full Mercedes-benz C 350 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.