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Mercedes-benz C vs Mercedes-benz S350 cgi l: 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 S350 cgi l
80%
MOT pass rate · 1 vehicles
Verdict: On MOT pass rate the Mercedes-benz C (78%) and Mercedes-benz S350 cgi l (80%) 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 S350 cgi l
MOT pass rate 78% 80% ✓
MOT failure rate 22% 20% ✓
Faults & advisories per test 1.7 0.8 ✓
Dangerous-fault share 3% 0% ✓
Average mileage 112,156 mi 10,227 mi
Sample size (vehicles) 675,043 1

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 S350 cgi l

  1. Offside Front Wheel bearing has slight play (5.1.3 (a) (i))
  2. Anti-lock braking system warning lamp indicates an ABS fault (1.6 (b))
  3. Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h))
  4. Nearside Headlamp aim too low (4.1.2 (a))
  5. Offside Headlamp aim too low (4.1.2 (a))

Reliability FAQ

On MOT pass rate the Mercedes-benz C (78%) and Mercedes-benz S350 cgi l (80%) 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 S350 cgi l 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.