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Mercedes-benz A-class vs Mercedes-benz Gla 250: 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 Gla 250
93%
MOT pass rate · 29 vehicles
Verdict: On MOT pass rate the Mercedes-benz A-class (78%) and Mercedes-benz Gla 250 (93%) 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 Gla 250
MOT pass rate 78% 93% ✓
MOT failure rate 22% 7% ✓
Faults & advisories per test 1.6 0.3 ✓
Dangerous-fault share 3% ✓ 6%
Average mileage 86,210 mi 54,231 mi
Sample size (vehicles) 362,612 29

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 Gla 250

  1. Rear Brake pad(s) wearing thin (1.1.13 (a) (ii))
  2. Offside Front Brake hose slightly deteriorated (1.1.12 (b) (ii))
  3. Front wipers poor
  4. Nearside Rear Child Seat fitted not allowing full inspection of adult belt
  5. Offside Rear Wheel bearing has slight play (5.1.3 (a) (i))
  6. Offside Front Tyre has a bulge, caused by separation or partial failure of its structure (5.2.3 (d) (ii))

Reliability FAQ

On MOT pass rate the Mercedes-benz A-class (78%) and Mercedes-benz Gla 250 (93%) 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 Gla 250 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.