| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 11 |
| Rear reflector on motorcycle missing |1.4.1| | 10 |
| Drive chain worn to excess |6.2.1e| | 8 |
| Front Wheel spoke excessively loose |4.2.1b| | 8 |
| Horn not working |1.7.3a| | 7 |
| Registration plate issues | 6 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 4 |
| Rear Footrest missing |6.2.1a| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Rear Wheel spoke excessively loose |4.2.1b| | 4 |
| Offside Rear Direction indicators not working |1.5.1c| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 3 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Direction indicator not working ALL |1.5.1c| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Horn is not continous or uniform |1.7.3c| | 2 |
| Footrest missing |6.2.1a| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Wheel spoke missing |4.2.1b| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Lower Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Central Front Upper Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Central Front Upper Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Wheel spoke excessively loose |4.2.1b| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Centre Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Lower Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Front Lower Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear position lamp does not face the rear |1.1.1d| | 1 |
| Rear Stop lamp obscured |1.3.1c| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Front Front suspension assembly component cracked |2.3.1| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Registration plate lamp issues | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride chain link |6.2.1h| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Front Headlamp aim not tested |1.6| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Front wheel insecure |4.2.3b| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| All direction indicators missing |4.4.1 |a| |ii|| | 1 |
| Rear Motorcycle structure is fractured and structural rigidity is significantly reduced |6.1.1 |a| |i|| | 1 |
| Front Brake component has an inadequate repair Calliper rubbing directly on disc |3.1.5| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Brake locking device insecure |3.2.A1e| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Rear Gradient brake test indicates a binding brake |3.3.D1c| | 1 |
| Centre Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Rear reflector on motorcycle deteriorated and function impaired |1.4.2a| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Brake performance not tested |3.3| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| 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 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |