| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 17 |
| Rear reflector on motorcycle missing |1.4.1| | 10 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| Registration plate issues | 6 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 5 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| 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| | 3 |
| Nearside Front Direction indicators not working |1.5.1c| | 3 |
| Horn not working |1.7.3a| | 3 |
| Offside Front Direction indicator not working |1.5.1c| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Rear Brake locking device missing |3.2.A1e| | 2 |
| Offside Front Footrest insecure |6.2.1a| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Rear Upper Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Offside Rear Upper Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Centre Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Brake locking device missing Brake caliper arm stay |3.2.A1e| | 1 |
| Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Offside Handlebar handgrip missing |2.1.1c| | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Nearside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Upper Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Offside Front Indicator tell tale not functioning |1.5.2| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Stop lamp does not illuminate immediately a brake applies brake lever |1.3.1a| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Brake component inadequately mounted missing split pin. (1.1.21 (c)) | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Brake lining|s| missing Pad material coming away from metal backing |1.1.13 |c|| | 1 |
| Front Brake fluid significantly below minimum mark brake fluid very low |1.1.10 |d| |ii|| | 1 |
| Front Steering headbearing in such a condition that steering control is adversely affected head bearings knotching and very stiff turn |2.2.2 |f| |ii|| | 1 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Steering lock stop ineffective |2.1.3| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Stop lamp does not illuminate immediately a brake applies Rear switch |1.3.1a| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Front suspension assembly component cracked |2.3.1| | 1 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Centre Front All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Centre Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator insecure |1.5.3b| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear Brake cylinder has no reserve travel and braking performance affected |1.1.16 |e| |ii|| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Nearside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Centre Rear Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |