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Mercedes-benz Amg a 45 vs Mercedes-benz C: reliability comparison

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

Mercedes-benz Amg a 45
86%
MOT pass rate · 1 vehicles
Mercedes-benz C
78%
MOT pass rate · 675,043 vehicles
Verdict: On MOT pass rate the Mercedes-benz Amg a 45 (86%) 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 Amg a 45 Mercedes-benz C
MOT pass rate 86% ✓ 78%
MOT failure rate 14% ✓ 22%
Faults & advisories per test 1.1 ✓ 1.7
Dangerous-fault share 0% ✓ 3%
Average mileage 44,560 mi 112,156 mi
Sample size (vehicles) 1 675,043

Most common faults

Mercedes-benz Amg a 45

  1. Windscreen damaged but not adversely affecting driver's view (3.2 (a) (i))
  2. Nearside Front Tyre worn close to legal limit/worn on edge worn inner edge (5.2.3 (e))
  3. Outer Brake disc worn, pitted or scored, but not seriously weakened Both front (1.1.14 (a) (ii))
  4. Nearside Rear Inner Brake disc worn, but not excessively (1.1.14 (a) (i))
  5. Offside Rear Inner Brake disc worn, but not excessively (1.1.14 (a) (i))
  6. Exhaust Lambda reading after 2nd fast idle outside specified limits exhaust leak near front subframe (8.2.1.2 (c))

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 Amg a 45 (86%) 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 Amg a 45 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.