| Most common failures | No# failures |
|---|
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 30 |
| Headlamp aim out of alignment | 26 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 26 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 21 |
| Steering headbearing has excessive free play |2.2.2| | 18 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 15 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 13 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 12 |
| Horn not working |1.7.3a| | 12 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 11 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 9 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 9 |
| Registration plate issues | 8 |
| Throttle operating incorrectly |6.2.1f| | 7 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 5 |
| Front wheel has a loose wheel nut|s| |4.2.3a| | 5 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 4 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 4 |
| Riders seat insecure |6.2.1a| | 4 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Fuel system component leaking |7.2.1a| | 3 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 3 |
| Rear Wheel damaged significantly reducing the original strength |4.2.1a| | 3 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 3 |
| Front Steering headbearing has excessive free play |2.2.2| | 3 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 3 |
| Front Horn not working |1.7.3a| | 3 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 3 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 3 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear wheel insecure |4.2.3b| | 2 |
| Front Brake lever is inoperative |3.1.3c| | 2 |
| Rear Brake pedal is inoperative |3.1.3c| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Rear Built up wheel has a bolt/s missing |4.2.1c| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 2 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 2 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Front Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Stop lamp affected by the operation of the horn |1.3.2| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Front Brake back plate|s| securing bolt|s| loose |3.2.A1j| | 2 |
| Front wheel spindle securing nut|s| loose |2.3.5a| | 2 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Floor brake test Neither brake control achieves an efficiency of 25% |3.3.C1b| | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 2 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Throttle operating incorrectly jamming |not returning| |6.2.1f| | 1 |
| Riders seat insecure doesnt lock down |6.2.1a| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Rear Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Nearside Front suspension assembly component missing |2.3.1| | 1 |
| Offside Front suspension assembly component missing |2.3.1| | 1 |
| Front Brake hose fouling |3.2.B3b| | 1 |
| Offside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Brake component damaged and seriously reduced in strength |3.2.A1| | 1 |
| Central Rear Upper Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Central Front Upper Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Central Front Upper Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Headlamp aim not tested not bright enough |1.6| | 1 |
| Headlamp at least one does not illuminate on dipped beam or main cannot tell |1.2.2a|i|| | 1 |
| Rear position lamp adversely affected by the operation of another lamp too dim when lights on main pattern |1.1.3b| | 1 |
| Front Brake cable excessively corroded not releasing correctly due to being semi siezed |3.2.A1b| | 1 |
| Front wheel spindle loose |2.3.5a| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component link arm pivots-could be due to loose wheel |2.3.4| | 1 |
| Rear Brake linkage has abnormal movement due to excessive wear pedal pivot excessively worn |3.2.A1i| | 1 |
| Riders seat insecure locking device missing |6.2.1a| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Front Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Centre Rear Lower Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Centre Front Lower Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Front wheel has a missing wheel stud|s| |4.2.3a| | 1 |
| Offside Front suspension assembly component loose |2.3.1| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front Riders seat insecure |6.2.1a| | 1 |
| Rear Fuel pipe leaking |7.2.1a| | 1 |
| Rear Exhaust has part of the system missing |7.1.1a| | 1 |
| Front position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Front Front position lamp obscured more than 50% |1.1.1d| | 1 |
| Front wheel spindle loose |2.3.3a| | 1 |
| Front Gradient brake test indicates a sticking brake |3.3.D1c| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Nearside Handlebar handgrip missing |2.1.1c| | 1 |
| Offside Handlebar handgrip missing |2.1.1c| | 1 |
| Front Front suspension spring worn and seriously weakened |2.3.2b| | 1 |
| Rear Brake pedal is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Central Front suspension assembly component loose FRONT FORKS LOOSE |2.3.1| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Front Steering linkage has excessive free play |2.2.2| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Offside Steering lock stop missing |2.1.3| | 1 |
| Front Brake back plate|s| insecure |3.2.A1j| | 1 |
| Motorcycle structure cracked |6.1.1a| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Rear Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Front Brake disc|s| securing bolt|s| loose |3.2.A1g| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies brake light in/op |1.3.1a| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear wheel has a missing wheel nut|s| |4.2.3a| | 1 |
| Front Built up wheel has a bolt/s missing |4.2.1c| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Upper Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Headlamp aim beam image too far to the right |1.6.4| | 1 |
| Front Brake cable has a significantly damaged outer casing. |3.2.A1b| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Front Brake locking device insecure |3.2.A1e| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear suspension component excessively corroded. |2.4.A.1a| | 1 |
| Front wheel insecure |4.2.3b| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| An item not tested |Manual| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front suspension assembly component loose |2.3.1| | 1 |
| Brake locking device insecure |3.2.A1e| | 1 |
| Nearside Front Lower Front suspension assembly component loose |2.3.1| | 1 |
| Offside Lower Front suspension assembly component loose |2.3.1| | 1 |