Mercedes-benz E vs Mercedes-benz Slk 55: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Mercedes-benz E
79%
MOT pass rate · 429,719 vehicles
Mercedes-benz Slk 55
82%
MOT pass rate · 1 vehicles
Verdict: On MOT pass rate the Mercedes-benz E (79%) and Mercedes-benz Slk 55 (82%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Mercedes-benz E | Mercedes-benz Slk 55 |
|---|---|---|
| MOT pass rate | 79% | 82% ✓ |
| MOT failure rate | 21% | 18% ✓ |
| Faults & advisories per test | 1.6 | 0.8 ✓ |
| Dangerous-fault share | 3% | 0% ✓ |
| Average mileage | 124,278 mi | 44,204 mi |
| Sample size (vehicles) | 429,719 | 1 |
Most common faults
Mercedes-benz E
- Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
- Offside Rear Tyre worn close to the legal limit (4.1.E.1)
- Offside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Nearside Rear 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)
- Offside Front Tyre worn close to the legal limit (4.1.E.1)
Mercedes-benz Slk 55
- Front Windscreen has damage to an area less than a 10mm circle within zone 'A' (8.3.1a)
- Nearside Front Nail in tyre
- Front passenger door cannot be opened from inside the vehicle (6.2.B.1b)
- Rear Tyre worn close to legal limit/worn on edge Both sides (5.2.3 (e))
- Nearside Front Road wheel slightly distorted (5.2.2 (c) (i))
- Nearside Front Anti-roll bar ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii))
Reliability FAQ
On MOT pass rate the Mercedes-benz E (79%) and Mercedes-benz Slk 55 (82%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Mercedes-benz E report Full Mercedes-benz Slk 55 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.