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Mercedes-benz A 140 vs Mercedes-benz A-class: reliability comparison

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

Mercedes-benz A 140
59%
MOT pass rate · 1 vehicles
Mercedes-benz A-class
78%
MOT pass rate · 362,612 vehicles
Verdict: On MOT pass rate the Mercedes-benz A 140 (59%) and Mercedes-benz A-class (78%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Mercedes-benz A 140 Mercedes-benz A-class
MOT pass rate 59% 78% ✓
MOT failure rate 41% 22% ✓
Faults & advisories per test 3.1 1.6 ✓
Dangerous-fault share 1% ✓ 3%
Average mileage 62,330 mi 86,210 mi
Sample size (vehicles) 1 362,612

Most common faults

Mercedes-benz A 140

  1. Front brake disc worn, pitted or scored, but not seriously weakened (3.5.1i)
  2. Steering system has slight free play detected at steering wheel (2.2.A.1b)
  3. Under-trays fitted obscuring some underside components
  4. Offside Rear Brake pipe corroded, covered in grease or other material (1.1.11 (c))
  5. Front Coil spring corroded both sides (5.3.1 (b) (i))
  6. Nearside Rear Brake pipe slightly corroded (3.6.B.2c)

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))

Reliability FAQ

On MOT pass rate the Mercedes-benz A 140 (59%) and Mercedes-benz A-class (78%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Mercedes-benz A 140 report Full Mercedes-benz A-class 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.