| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 11 |
| Registration plate issues | 8 |
| Rear reflector on motorcycle missing |1.4.1| | 6 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear Wheel corroded significantly reducing the original strength |4.2.1a| | 2 |
| Front Brake lever is positioned so that the brake cannot be readily applied |3.1.3c| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front Direction indicators not working |1.5.1c| | 2 |
| Rear Direction indicators not working |1.5.1c| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Horn not working |1.7.3a| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 2 |
| Centre Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Front Brake hose which buldges |3.2.B4| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Front wheel spindle loose |2.3.3a| | 1 |
| Brake pedal mounting insecure |3.1.2a| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Brake lever cracked |3.1.2c| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Registration plate lamp issues | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Rear Footrest missing |6.2.12 |a|| | 1 |
| Nearside Front Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear wheel has a loose wheel bolt|s| |4.2.3a| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Drive chain horseshoe locking device incorrectly fitted |6.1.7 |j| |i|| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Offside Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Centre Rear Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Wheel fractured |5.2.2 |a|| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Central Rear Suspension component pin or bush excessively worn linkage bearings excessively worn (5.3.4 (a) (i)) | 1 |
| Front Direction indicators not working (1.5.1c) | 1 |
| Rear Direction indicators not working (1.5.1c) | 1 |
| Rear Stop lamp affected by the operation of another lamp (1.3.2) | 1 |
| Front Upper Rear suspension bearing has excessive free play (2.4.A2a(i)) | 1 |
| Front Brake disc(s) has excessive run out (3.2.A1m) | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort (3.3.A1d) | 1 |
| Rear Roller brake test indicates a sticking brake (3.3.A1a) | 1 |
| Rear Brake pedal has inadequate reserve travel (3.1.3b) | 1 |
| Rear Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Front Wheel fixing missing (single fixing) Split pin missing (5.2.1 (a) (ii)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort Brake disc has excessive runout (1.2.1 (e)) | 1 |
| Rear Lower Suspension attachment bracket/mounting insecure Mounting bolt loose (5.3.3 (a) (i)) | 1 |
| Headlamp aim not tested Headlamp not working on dipped beam. (4.1.2 (b)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Horn not working (7.7 (a)) | 1 |
| Rear Suspension arm pin or bush likely to become detached dog leg bolt not tight (5.3.4 (a) (ii)) | 1 |
| Rear Suspension arm pin or bush excessively worn dog leg bushes have play (5.3.4 (a) (i)) | 1 |