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Mercedes-benz 560sec vs Mercedes-benz C: reliability comparison

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

Mercedes-benz 560sec
75%
MOT pass rate · 2 vehicles
Mercedes-benz C
78%
MOT pass rate · 675,043 vehicles
Verdict: On MOT pass rate the Mercedes-benz 560sec (75%) and Mercedes-benz C (78%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Mercedes-benz 560sec Mercedes-benz C
MOT pass rate 75% 78% ✓
MOT failure rate 25% 22% ✓
Faults & advisories per test 2.8 1.7 ✓
Dangerous-fault share 0% ✓ 3%
Average mileage 100,502 mi 112,156 mi
Sample size (vehicles) 2 675,043

Most common faults

Mercedes-benz 560sec

  1. Exhaust emissions carbon monoxide content excessive (8.2.1.2 (b))
  2. Front Lower Suspension arm ball joint dust cover no longer prevents the ingress of dirt nearside and offside (5.3.4 (b) (ii))
  3. Headlamp aim projected beam image is obviously incorrect nearside and offside kick up to right (4.1.2 (c))
  4. Nearside Front Electrical wiring insulation so damaged or deteriorated it is likely to cause a short-circuit engine bay (4.11 (c) (ii))
  5. Nearside Rear Anti-roll bar attachment bracket/mounting insecure (5.3.3 (a) (i))
  6. Offside Registration plate lamp inoperative in the case of multiple lamps or light sources (4.7.1 (b) (i))

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)

Reliability FAQ

On MOT pass rate the Mercedes-benz 560sec (75%) and Mercedes-benz C (78%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Mercedes-benz 560sec report Full Mercedes-benz C 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.