Mercedes-benz A-class vs Mercedes-benz Glc 220 d 4m amg line prem a: 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 Glc 220 d 4m amg line prem a
94%
MOT pass rate · 1,264 vehicles
More reliable
Verdict: On MOT pass rate, the Mercedes-benz Glc 220 d 4m amg line prem a is the more reliable of the two — 94% pass first time versus 78%. It's one signal among several; check the full breakdown below.
Head to head
| Measure | Mercedes-benz A-class | Mercedes-benz Glc 220 d 4m amg line prem a |
|---|---|---|
| MOT pass rate | 78% | 94% ✓ |
| MOT failure rate | 22% | 6% ✓ |
| Faults & advisories per test | 1.6 | 0.0 ✓ |
| Dangerous-fault share | 3% | 0% ✓ |
| Average mileage | 86,210 mi | 70,730 mi |
| Sample size (vehicles) | 362,612 | 1,264 |
Most common faults
Mercedes-benz A-class
- Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Nearside Front Tyre worn close to the legal limit (4.1.E.1)
- Under-trays fitted obscuring some underside components
- Offside Front Tyre worn close to the legal limit (4.1.E.1)
- Offside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
Mercedes-benz Glc 220 d 4m amg line prem a
- Nearside Front Tyre has a cut in excess of the requirements deep enough to reach the ply or cords tread 235/55v19 (5.2.3 (d) (i))
- Nearside Rear Tyre has a cut in excess of the requirements deep enough to reach the ply or cords tread 235/55v19 (5.2.3 (d) (i))
- Offside Rear Nail in tyre
- Rear Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))
- Front Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))
- Nearside Front Lower Suspension arm ball joint has slight play (5.3.4 (a) (i))
Reliability FAQ
On MOT pass rate, the Mercedes-benz Glc 220 d 4m amg line prem a is the more reliable of the two — 94% pass first time versus 78%. It's one signal among several; check the full breakdown below.
Full Mercedes-benz A-class report Full Mercedes-benz Glc 220 d 4m amg line prem a 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.