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Mercedes-benz E vs Mercedes-benz Slk 230: 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 230
76%
MOT pass rate · 5 vehicles
Verdict: On MOT pass rate the Mercedes-benz E (79%) and Mercedes-benz Slk 230 (76%) 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 230
MOT pass rate 79% ✓ 76%
MOT failure rate 21% ✓ 24%
Faults & advisories per test 1.6 1.5 ✓
Dangerous-fault share 3% 1% ✓
Average mileage 124,278 mi 70,544 mi
Sample size (vehicles) 429,719 5

Most common faults

Mercedes-benz E

  1. Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
  2. Offside Rear Tyre worn close to the legal limit (4.1.E.1)
  3. Offside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  4. Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  5. Nearside Front Tyre worn close to the legal limit (4.1.E.1)
  6. Offside Front Tyre worn close to the legal limit (4.1.E.1)

Mercedes-benz Slk 230

  1. Offside Rear Direction indicator slightly discoloured (1.4.A.2f)
  2. Offside Front Direction indicator damaged, but still visible from a reasonable distance (1.4.A.2e)
  3. Nearside Rear Direction indicator slightly discoloured (4.4.3 (a))
  4. Offside Front suspension has slight play in a lower suspension ball joint (2.5.B.1a)
  5. Rear Registration plate deteriorated but not likely to be misread (0.1 (b))
  6. Nearside Front Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))

Reliability FAQ

On MOT pass rate the Mercedes-benz E (79%) and Mercedes-benz Slk 230 (76%) 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 230 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.