Mercedes-benz A-class vs Mercedes-benz Sl 350 convertible: 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 Sl 350 convertible
100%
MOT pass rate · 1 vehicles
Verdict: On MOT pass rate the Mercedes-benz A-class (78%) and Mercedes-benz Sl 350 convertible (100%) 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 Sl 350 convertible |
|---|---|---|
| MOT pass rate | 78% | 100% ✓ |
| MOT failure rate | 22% | 0% ✓ |
| Faults & advisories per test | 1.6 | 0.8 ✓ |
| Dangerous-fault share | 3% | 0% ✓ |
| Average mileage | 86,210 mi | — |
| Sample size (vehicles) | 362,612 | 1 |
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 Sl 350 convertible
- Manufactures engine and body covers fitted restricting inspection of components
- Manufactures engine, sill, axle and body covers fitted restricting inspection of components
- Brake disc worn, pitted or scored, but not seriously weakened both rear (1.1.14 (a) (ii))
- Nearside Rear Inner Tyre slightly damaged/cracking or perishing side (5.2.3 (d) (ii))
Reliability FAQ
On MOT pass rate the Mercedes-benz A-class (78%) and Mercedes-benz Sl 350 convertible (100%) 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 Sl 350 convertible 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.