| Most common failures | No# failures |
|---|
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 18 |
| Headlamp aim out of alignment | 17 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 14 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 12 |
| Horn not working |1.7.3a| | 11 |
| Steering headbearing has excessive free play |2.2.2| | 11 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 10 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 9 |
| Registration plate issues | 8 |
| Front Steering headbearing has excessive free play |2.2.2| | 8 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 7 |
| Throttle operating incorrectly |6.2.1f| | 6 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 5 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 5 |
| Headlamp main beam affected by the operation of the horn |1.2.2c| | 5 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 4 |
| Front Horn not working |1.7.3a| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Rear Brake pedal insecure |3.1.2a| | 3 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 3 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 2 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Rear Gradient brake test indicates a sticking brake |3.3.D1c| | 2 |
| All position lamps adversely affected by the operation of the horn |1.1.3b| | 2 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Front Brake cable badly frayed |3.2.A1b| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 2 |
| Rear Exhaust mounting missing |7.1.1c| | 1 |
| Rear Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Offside Front Lower Front suspension assembly component cracked |2.3.1| | 1 |
| Front Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Rear Rear wheel insecure |4.2.3b| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Nearside Front wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Rear position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Front Brake locking device missing |3.2.A1e| | 1 |
| Front Brake back plate|s| insecure |3.2.A1j| | 1 |
| Front position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front suspension assembly component missing |2.3.1| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Front Headlamp incorrect colour |1.2.1| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Front Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Brake pedal attachment screws missing. |3.1.2b| | 1 |
| Front Brake lever pivots excessively worn |3.1.3a| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Centre Front Horn not working |1.7.3a| | 1 |
| Centre Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Lower Front suspension assembly component loose |2.3.1| | 1 |
| Offside Lower Front suspension assembly component loose |2.3.1| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Brake performance not tested |3.3| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition |7.1.2| | 1 |
| Centre Brake linkage has abnormal movement due to excessive wear |3.2.A1i| | 1 |
| Front Built up wheel has a bolt/s missing |4.2.1c| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Rear Fuel system component leaking |7.2.1a| | 1 |
| Front wheel has a missing wheel nut|s| |4.2.3a| | 1 |
| Front Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Front Front suspension spring worn and seriously weakened |2.3.2b| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Rear All position lamps not working |4.2.1 |a|| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Front wheel spindle loose |2.3.5a| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Offside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Front Lower Brake drum|s| insecure |3.2.A1g| | 1 |
| Offside Rear Lower Brake drum|s| insecure |3.2.A1g| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Front Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Upper Steering headbearing in such a condition that steering control is adversely affected |2.2.2 |f| |ii|| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Brake drum|s| cracked |3.2.A1g| | 1 |
| Rear Brake drum|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Offside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component Front suspension linkages worn |2.3.4| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Position lamp switch faulty |1.1.4a| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front Fork yoke deformed |2.1.1b| | 1 |
| Front Brake lever excessively damaged |3.2.A1c| | 1 |
| Rear position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Plate brake test No brake control achieves an efficiency of 30%. |3.3.B2a| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Front Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking centre stand loose. |6.1.1c| | 1 |
| Fuel system component insecure fit new fuel pipe clip |7.2.1b| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Brake grabbing severely (1.2.1 (c)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Floor brake test Neither brake control achieves an efficiency of 25% (1.2.2 (a) (i)) | 1 |