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Honda Cb400 super 4 vs Honda Unknown: reliability comparison

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

Honda Cb400 super 4
78%
MOT pass rate · 10 vehicles
Honda Unknown
85%
MOT pass rate · 1,041,859 vehicles
Verdict: On MOT pass rate the Honda Cb400 super 4 (78%) 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 Cb400 super 4 Honda Unknown
MOT pass rate 78% 85% ✓
MOT failure rate 22% 15% ✓
Faults & advisories per test 0.7 ✓ 0.9
Dangerous-fault share 0% ✓ 3%
Average mileage 39,713 mi 25,474 mi
Sample size (vehicles) 10 1,041,859

Most common faults

Honda Cb400 super 4

  1. Rear Tyre worn close to the legal limit (4.1.3(ii))
  2. Exhaust noisy (7.1.2)
  3. Rear Tyre valve stem damaged which could cause sudden tyre deflation (4.1.2c)
  4. Stop lamp does not illuminate immediately a brake applies (1.3.1a)
  5. Rear reflector on motorcycle missing (1.4.1)
  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 Cb400 super 4 (78%) and Honda Unknown (85%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Honda Cb400 super 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.