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Mercedes-benz A-class vs Mercedes-benz A170 avantgarde: 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 A170 avantgarde
88%
MOT pass rate · 1 vehicles
Verdict: On MOT pass rate the Mercedes-benz A-class (78%) and Mercedes-benz A170 avantgarde (88%) 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 A170 avantgarde
MOT pass rate 78% 88% ✓
MOT failure rate 22% 12% ✓
Faults & advisories per test 1.6 0.9 ✓
Dangerous-fault share 3% 0% ✓
Average mileage 86,210 mi 95,356 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 A170 avantgarde

  1. Offside Front Outer Drive shaft joint constant velocity boot severely deteriorated (6.1.7 (g) (i))
  2. Child seat fitted not allowing full inspection of adult belt
  3. Front Tyre worn close to the legal limit (4.1.E.1)
  4. Front Brake pad(s) wearing thin (3.5.1g)
  5. Nearside Front Tyre worn close to the legal limit (4.1.E.1)
  6. Child Seat fitted not allowing full inspection of adult belt fitted to nearside rear seat

Reliability FAQ

On MOT pass rate the Mercedes-benz A-class (78%) and Mercedes-benz A170 avantgarde (88%) 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 A170 avantgarde 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.