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Mercedes-benz C vs Mercedes-benz Smart: reliability comparison

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

Mercedes-benz C
78%
MOT pass rate · 675,043 vehicles
Mercedes-benz Smart
88%
MOT pass rate · 2 vehicles
Verdict: On MOT pass rate the Mercedes-benz C (78%) and Mercedes-benz Smart (88%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Mercedes-benz C Mercedes-benz Smart
MOT pass rate 78% 88% ✓
MOT failure rate 22% 12% ✓
Faults & advisories per test 1.7 1.2 ✓
Dangerous-fault share 3% 0% ✓
Average mileage 112,156 mi 102,003 mi
Sample size (vehicles) 675,043 2

Most common faults

Mercedes-benz C

  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. Under-trays fitted obscuring some underside components
  6. Nearside Front Tyre worn close to the legal limit (4.1.E.1)

Mercedes-benz Smart

  1. Nearside Rear Shock absorbers has light misting of oil (5.3.2 (b))
  2. Nearside Windscreen wiper blade defective (3.4 (b) (i))
  3. Offside Windscreen wiper blade defective (3.4 (b) (i))
  4. Nearside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
  5. Offside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
  6. Hazard warning switch inoperative (4.4.2 (a) (ii))

Reliability FAQ

On MOT pass rate the Mercedes-benz C (78%) and Mercedes-benz Smart (88%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Mercedes-benz C report Full Mercedes-benz Smart 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.