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Citroen C3 vs Citroen C6: reliability comparison

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

Citroen C3
73%
MOT pass rate · 313,702 vehicles
Citroen C6
76%
MOT pass rate · 824 vehicles
More reliable
Verdict: On MOT pass rate, the Citroen C6 is the more reliable of the two — 76% pass first time versus 73%. It's one signal among several; check the full breakdown below.

Head to head

Measure Citroen C3 Citroen C6
MOT pass rate 73% 76% ✓
MOT failure rate 27% 24% ✓
Faults & advisories per test 1.9 1.7 ✓
Dangerous-fault share 2% 2%
Average mileage 84,223 mi 104,431 mi
Sample size (vehicles) 313,702 824

Most common faults

Citroen C3

  1. Nearside Front Tyre worn close to the legal limit (4.1.E.1)
  2. Oil leak, but not excessive (8.4.1 (a) (i))
  3. Offside Front Tyre worn close to the legal limit (4.1.E.1)
  4. Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  5. Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  6. Nearside Rear Tyre worn close to the legal limit (4.1.E.1)

Citroen C6

  1. Under-trays fitted obscuring some underside components
  2. Offside Front Tyre worn close to the legal limit (4.1.E.1)
  3. Nearside Front Tyre worn close to the legal limit (4.1.E.1)
  4. Engine covers fitted obscuring some components in the engine bay
  5. Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
  6. Offside Rear Tyre worn close to the legal limit (4.1.E.1)

Reliability FAQ

On MOT pass rate, the Citroen C6 is the more reliable of the two — 76% pass first time versus 73%. It's one signal among several; check the full breakdown below.

Full Citroen C3 report Full Citroen C6 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.