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Mercedes-benz A-class vs Mercedes-benz Cls350d: 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 Cls350d
87%
MOT pass rate · 2 vehicles
Verdict: On MOT pass rate the Mercedes-benz A-class (78%) and Mercedes-benz Cls350d (87%) 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 Cls350d
MOT pass rate 78% 87% ✓
MOT failure rate 22% 13% ✓
Faults & advisories per test 1.6 0.4 ✓
Dangerous-fault share 3% ✓ 33%
Average mileage 86,210 mi 43,105 mi
Sample size (vehicles) 362,612 2

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 Cls350d

  1. Front Registration plate does not conform to the specified requirements (0.1 (d))
  2. Rear Registration plate does not conform to the specified requirements (0.1 (d))
  3. Nearside Rear Child Seat fitted not allowing full inspection of adult belt
  4. Offside Front Drive shaft joint constant velocity boot severely deteriorated (6.1.7 (g) (i))
  5. Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  6. Tyre pressure monitoring system malfunctioning or obviously inoperative (5.2.3 (h))

Reliability FAQ

On MOT pass rate the Mercedes-benz A-class (78%) and Mercedes-benz Cls350d (87%) 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 Cls350d 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.