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Honda 400 4 vs Honda Unknown: reliability comparison

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

Honda 400 4
89%
MOT pass rate · 17 vehicles
Honda Unknown
85%
MOT pass rate · 1,041,859 vehicles
Verdict: On MOT pass rate the Honda 400 4 (89%) and Honda Unknown (85%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Honda 400 4 Honda Unknown
MOT pass rate 89% ✓ 85%
MOT failure rate 11% ✓ 15%
Faults & advisories per test 0.2 ✓ 0.9
Dangerous-fault share 0% ✓ 3%
Average mileage 32,005 mi 25,474 mi
Sample size (vehicles) 17 1,041,859

Most common faults

Honda 400 4

  1. Front Brake excessively binding (1.2.1 (f))
  2. Front Roller brake test indicates a binding brake (3.3.A1a)
  3. Drive chain slightly loose (6.2.1d)
  4. Drive chain worn but not considered excessive (6.2.1e)
  5. Front suspension has a slightly reduced damping effect (2.3.6c)
  6. Rear shock absorber has a slightly reduced damping effect (2.4.A.3b)

Honda Unknown

  1. Exhaust noisy (8.1.1 (a))
  2. Rear Tyre worn close to the legal limit (5.2.3 (e))
  3. Chain guard missing
  4. Rear reflector missing (4.8.2 (a) (ii))
  5. Drive chain slightly loose (6.1.7 (c) (i))
  6. Front Brake binding but not excessively (1.2.1 (f))

Reliability FAQ

On MOT pass rate the Honda 400 4 (89%) and Honda Unknown (85%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Honda 400 4 report Full Honda Unknown 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.