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Honda Cb650 custom vs Honda Unknown: reliability comparison

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

Honda Cb650 custom
75%
MOT pass rate · 6 vehicles
Honda Unknown
85%
MOT pass rate · 1,041,859 vehicles
Verdict: On MOT pass rate the Honda Cb650 custom (75%) 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 Cb650 custom Honda Unknown
MOT pass rate 75% 85% ✓
MOT failure rate 25% 15% ✓
Faults & advisories per test 0.7 ✓ 0.9
Dangerous-fault share 0% ✓ 3%
Average mileage 25,963 mi 25,474 mi
Sample size (vehicles) 6 1,041,859

Most common faults

Honda Cb650 custom

  1. Offside Front Wheel has a slightly distorted bead rim. (4.2.2)
  2. Steering movement slightly 'notchy' (2.2.1b)
  3. Steering movement slightly 'notchy' (2.2.1a)
  4. Exhaust is leaking but is not excessively noisey (7.1.1b)
  5. Roller brake test The less effective brake control does not achieve an efficiency of 25%. (3.3.A2b)
  6. Stop lamp affected by the operation of another lamp (1.3.2)

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 Cb650 custom (75%) and Honda Unknown (85%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Honda Cb650 custom 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.