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Citroen C4 vs Citroen Relay horsebox: reliability comparison

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

Citroen C4
72%
MOT pass rate · 236,872 vehicles
Citroen Relay horsebox
72%
MOT pass rate · 11 vehicles
Verdict: On MOT pass rate the Citroen C4 (72%) and Citroen Relay horsebox (72%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Citroen C4 Citroen Relay horsebox
MOT pass rate 72% 72%
MOT failure rate 28% 28%
Faults & advisories per test 2.0 ✓ 2.4
Dangerous-fault share 3% 3%
Average mileage 100,675 mi 97,552 mi
Sample size (vehicles) 236,872 11

Most common faults

Citroen C4

  1. Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  2. Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  3. Offside Front Tyre worn close to the legal limit (4.1.E.1)
  4. Nearside Front Tyre worn close to the legal limit (4.1.E.1)
  5. Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
  6. Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))

Citroen Relay horsebox

  1. Parking brake efficiency below requirements (1.4.2 (a) (i))
  2. Engine MIL inoperative or indicates a malfunction (8.2.2.2 (g))
  3. Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii))
  4. Nearside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
  5. Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  6. Front Registration plate deteriorated but not likely to be misread (0.1 (b))

Reliability FAQ

On MOT pass rate the Citroen C4 (72%) and Citroen Relay horsebox (72%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Citroen C4 report Full Citroen Relay horsebox 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.