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Mercedes-benz 709 vs Mercedes-benz A-class: reliability comparison

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

Mercedes-benz 709
58%
MOT pass rate · 1 vehicles
Mercedes-benz A-class
78%
MOT pass rate · 362,612 vehicles
Verdict: On MOT pass rate the Mercedes-benz 709 (58%) 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 709 Mercedes-benz A-class
MOT pass rate 58% 78% ✓
MOT failure rate 42% 22% ✓
Faults & advisories per test 7.5 1.6 ✓
Dangerous-fault share 2% ✓ 3%
Average mileage 207,080 mi 86,210 mi
Sample size (vehicles) 1 362,612

Most common faults

Mercedes-benz 709

  1. Nearside Rear Brake pipe corroded, covered in grease or other material (1.1.11 (c))
  2. Offside Rear Brake pipe corroded, covered in grease or other material (1.1.11 (c))
  3. Brake load sensing valve stiff (3.6.E.3)
  4. Exhaust has a minor leak of exhaust gases (7.1.2)
  5. Nearside Front Brake hose has slight corrosion to ferrules (3.6.B.4e)
  6. Nearside Front 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 709 (58%) 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 709 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.