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Honda Cbr400r vs Honda Unknown: reliability comparison

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

Honda Cbr400r
80%
MOT pass rate · 57 vehicles
Honda Unknown
85%
MOT pass rate · 1,041,859 vehicles
More reliable
Verdict: On MOT pass rate, the Honda Unknown is the more reliable of the two — 85% pass first time versus 80%. It's one signal among several; check the full breakdown below.

Head to head

Measure Honda Cbr400r Honda Unknown
MOT pass rate 80% 85% ✓
MOT failure rate 20% 15% ✓
Faults & advisories per test 1.0 0.9 ✓
Dangerous-fault share 0% ✓ 3%
Average mileage 38,599 mi 25,474 mi
Sample size (vehicles) 57 1,041,859

Most common faults

Honda Cbr400r

  1. Front Tyre worn close to the legal limit (4.1.3(ii))
  2. Exhaust noisy (7.1.2)
  3. Drive chain slightly loose (6.2.1d)
  4. Drive chain worn but not considered excessive (6.2.1e)
  5. Rear Tyre worn close to the legal limit (4.1.3(ii))
  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 Unknown is the more reliable of the two — 85% pass first time versus 80%. It's one signal among several; check the full breakdown below.

Full Honda Cbr400r 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.