| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 9 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 9 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 6 |
| Registration plate issues | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Horn not working |1.7.3a| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Registration plate lamp issues | 2 |
| Brake hose has insufficient room to move | 2 |
| Nearside Front Direction indicator not working |1.4.A.2c| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Front Brake caliper|s| insecure |3.2.A1j| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Nearside Rear Rear wheel bearing has excessive play |2.6.2| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Steering rack gaiter split |2.2.D.2d| | 1 |
| Front wheel bearing has excessive play |2.5.A.3c| | 1 |
| Rear wheel bearing has excessive play |2.6.2| | 1 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 1 |
| Nearside Front Upper Suspension arm has excessive play in a ball joint |2.4.G.2| | 1 |
| Nearside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 1 |
| Offside Front Braking system leaking |3.6.A.1| | 1 |
| Nearside Front Body insecure and dangerous to other road users |6.1.B.1b| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Handlebar cracked |2.1.1b| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| An item not tested |Manual| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Front mudguard insecure |2.3.7| | 1 |
| Front Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Rear Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Front Footrest insecure |6.2.1a| | 1 |
| Rear Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Handlebar mounting excessively deteriorated |flexible type| |2.1.1d| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Front Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Stop lamp missing |1.2.1a| | 1 |
| Track rod end ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.2.C.1c| | 1 |
| Steering rack gaiter split |2.2.D.2d| | 1 |
| Offside Rear Drive shaft uj which forms part of the suspension has a missing flange bolt |2.4.G.4c| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Offside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Nearside Lower Motorcycle structure cracked |6.1.1a| | 1 |
| Brake pedal is inoperative rear |3.1.3c| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Nearside Steering lock stop missing |2.1.3| | 1 |
| Nearside Front Steering lock stop ineffective |2.1.3| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Front Steering lock stop missing |2.1.3| | 1 |
| Nearside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Front Lower Front suspension assembly component missing |2.3.1| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Nearside Front Wheel stud|s| missing |4.2.A.1e| | 1 |
| Parking brake lever releases when knocked |3.1.6a| | 1 |
| Parking brake lever has excessive side play in the pivot and may disengage |3.1.4a| | 1 |
| Parking brake lever, pawl mechanism pivot|s| or their associated mountings locking device insecure |3.1.4b| | 1 |
| All position lamps not working |1.1.A.3b| | 1 |
| Offside Front Upper Front suspension has excessive play in a upper suspension ball joint |2.5.B.1a| | 1 |
| Offside Front Upper Front suspension has excessive movement at a wishbone pin or bush |2.5.A.1c| | 1 |
| Offside Rear Rear wheel bearing has excessive play |2.6.2| | 1 |
| Front Front position lamp|s| not working |1.1.A.3b| | 1 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 1 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 1 |
| Rear fog lamp missing |1.3.2a| | 1 |
| Hazard warning lamps not flashing in phase, with ignition off |1.4.B.1f| | 1 |
| Offside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 1 |
| Offside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 1 |
| Centre Parking brake lever has excessive side play in the pivot and may disengage |3.1.4a| | 1 |
| Parking brake: efficiency below requirements |3.7.C.1b| | 1 |
| Offside Rear Lower Braking system leaking |3.6.A.1| | 1 |
| Centre Rear Exhaust has a major leak of exhaust gases |7.1.2| | 1 |
| Nearside Rear Direction indicator not working |1.4.A.2c| | 1 |
| Nearside Rear Direction indicator insecure |1.4.A.2b| | 1 |
| Horn not working |1.6.2a| | 1 |
| Nearside Rear Rear position lamp|s| incomplete |1.1.4a| | 1 |
| Offside Rear Rear position lamp|s| incomplete |1.1.4a| | 1 |
| Service brake: efficiency below requirements |3.7.C.1a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Front mudguard can easily contact any fixed point of the motor bicycle. |2.3.7| | 1 |
| Rear Brake back plate|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Brake back plate|s| insecure |3.2.A1j| | 1 |
| Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 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 |
| Nearside Front Upper Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 1 |
| Offside Front Upper Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected engine revs when steering turned (6.2.7 (a) (ii)) | 1 |