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Mercedes-benz 450slc vs Mercedes-benz A-class: reliability comparison

MOT pass rates, common faults and mileage compared from real UK MOT data.

Mercedes-benz 450slc
73%
MOT pass rate · 2 vehicles
Mercedes-benz A-class
78%
MOT pass rate · 362,612 vehicles
Verdict: On MOT pass rate the Mercedes-benz 450slc (73%) and Mercedes-benz A-class (78%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Mercedes-benz 450slc Mercedes-benz A-class
MOT pass rate 73% 78% ✓
MOT failure rate 27% 22% ✓
Faults & advisories per test 1.5 ✓ 1.6
Dangerous-fault share 6% 3% ✓
Average mileage 83,507 mi 86,210 mi
Sample size (vehicles) 2 362,612

Most common faults

Mercedes-benz 450slc

  1. Offside Stop lamp not working (1.2.1b)
  2. Offside Windscreen washer provides insufficient washer liquid (8.2.3)
  3. Driver's seat cannot be secured in the upright position. (6.2.A.2)
  4. Exhaust emissions carbon monoxide content excessive (7.3.B.1a)
  5. Nearside Front Passenger's seat cannot be secured in the upright position. (6.2.A.2)
  6. Nearside Front position lamp(s) not working (1.1.A.3b)

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))

Reliability FAQ

On MOT pass rate the Mercedes-benz 450slc (73%) and Mercedes-benz A-class (78%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Mercedes-benz 450slc report Full Mercedes-benz A-class 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.