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Mercedes-benz A-class vs Mercedes-benz Amg cla 45 s 4matic+ 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 Amg cla 45 s 4matic+ auto
85%
MOT pass rate · 58 vehicles
Verdict: On MOT pass rate the Mercedes-benz A-class (78%) and Mercedes-benz Amg cla 45 s 4matic+ auto (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 Amg cla 45 s 4matic+ auto
MOT pass rate 78% 85% ✓
MOT failure rate 22% 15% ✓
Faults & advisories per test 1.6 0.7 ✓
Dangerous-fault share 3% ✓ 16%
Average mileage 86,210 mi 42,660 mi
Sample size (vehicles) 362,612 58

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 Amg cla 45 s 4matic+ auto

  1. Windscreen damaged but not adversely affecting driver's view (3.2 (a) (i))
  2. Front Brake pad(s) wearing thin (1.1.13 (a) (ii))
  3. Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  4. Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  5. Nearside Front Tyre has ply or cords exposed (5.2.3 (d) (ii))
  6. Offside Front Road wheel fractured (5.2.2 (a))

Reliability FAQ

On MOT pass rate the Mercedes-benz A-class (78%) and Mercedes-benz Amg cla 45 s 4matic+ auto (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 Amg cla 45 s 4matic+ 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.