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Mercedes-benz A-class vs Mercedes-benz Ml 320 cdi se 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 Ml 320 cdi se auto
81%
MOT pass rate · 1 vehicles
Verdict: On MOT pass rate the Mercedes-benz A-class (78%) and Mercedes-benz Ml 320 cdi se auto (81%) 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 Ml 320 cdi se auto
MOT pass rate 78% 81% ✓
MOT failure rate 22% 19% ✓
Faults & advisories per test 1.6 ✓ 1.9
Dangerous-fault share 3% 3%
Average mileage 86,210 mi 118,011 mi
Sample size (vehicles) 362,612 1

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 Ml 320 cdi se auto

  1. Under-trays fitted obscuring some underside components
  2. Nearside Front Outer Drive shaft joint constant velocity boot severely deteriorated (6.1.7 (g) (i))
  3. Oil leak, but not excessive (8.4.1 (a) (i))
  4. Rear Shock absorbers light misting of oil or has limited damping effect both sides (5.3.2 (b))
  5. Offside Side repeater slightly discoloured damaged (4.4.3 (a))
  6. Nearside Rear Tyre worn close to the legal limit (4.1.E.1)

Reliability FAQ

On MOT pass rate the Mercedes-benz A-class (78%) and Mercedes-benz Ml 320 cdi se auto (81%) 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 Ml 320 cdi se 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.