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Mercedes-benz A-class vs Mercedes-benz C 300 amg lne ed prem + d 4m a: 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 300 amg lne ed prem + d 4m a
85%
MOT pass rate · 5 vehicles
Verdict: On MOT pass rate the Mercedes-benz A-class (78%) and Mercedes-benz C 300 amg lne ed prem + d 4m a (85%) 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 300 amg lne ed prem + d 4m a
MOT pass rate 78% 85% ✓
MOT failure rate 22% 15% ✓
Faults & advisories per test 1.6 1.4 ✓
Dangerous-fault share 3% 0% ✓
Average mileage 86,210 mi 56,253 mi
Sample size (vehicles) 362,612 5

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 300 amg lne ed prem + d 4m a

  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. Central Rear Prop shaft flexible coupling slightly deteriorated Cracked (6.1.7 (d) (i))
  4. Nearside Rear Brake pad(s) wearing thin (1.1.13 (a) (ii))
  5. Nearside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
  6. Nearside Rear Inner 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 300 amg lne ed prem + d 4m a (85%) 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 300 amg lne ed prem + d 4m a 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.