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Mercedes-benz A-class vs Mercedes-benz C63 amg edition 125 auto: 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 C63 amg edition 125 auto
77%
MOT pass rate · 77 vehicles
Verdict: On MOT pass rate the Mercedes-benz A-class (78%) and Mercedes-benz C63 amg edition 125 auto (77%) 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 C63 amg edition 125 auto
MOT pass rate 78% ✓ 77%
MOT failure rate 22% ✓ 23%
Faults & advisories per test 1.6 0.2 ✓
Dangerous-fault share 3% ✓ 10%
Average mileage 86,210 mi 71,054 mi
Sample size (vehicles) 362,612 77

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 C63 amg edition 125 auto

  1. Central Rear Brake pipe corroded, covered in grease or other material (1.1.11 (c))
  2. Nearside Rear Brake pipe corroded, covered in grease or other material (1.1.11 (c))
  3. Oil leak, but not excessive (8.4.1 (a) (i))
  4. Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
  5. Offside Rear Tyre worn close to the legal limit (4.1.E.1)
  6. Front Windscreen wiper does not clear the windscreen effectively (3.4 (b) (ii))

Reliability FAQ

On MOT pass rate the Mercedes-benz A-class (78%) and Mercedes-benz C63 amg edition 125 auto (77%) 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 C63 amg edition 125 auto 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.