| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 12 |
| Drive chain excessively loose |6.2.1d| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear Footrest missing |6.2.1a| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Offside Rear Footrest insecure (6.2.12 (a)) | 1 |
| Brake clevis joint insecure Both torque arm bolts loose no locking device on one (1.1.15 (c)) | 1 |
| Brake clevis joint insecure Rear brake lever stop bolt loose (1.1.15 (c)) | 1 |
| Suspension component pin or bush excessively worn Swing arm excessive play (5.3.4 (a) (i)) | 1 |
| Wheel alignment incorrect which adversely affects the steering Rear wheel not in level (2.4 (a)) | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake back plate|s| insecure |3.2.A1j| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Horn control not functioning. |1.7.2b| | 1 |
| Headlamp light intensity severely reduced when engine is speed is increased (4.1.4 (a)) | 1 |
| Rear Wheel spoke cracked. |4.2.1b| | 1 |
| Centre Front Upper Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Centre Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Centre Front Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Centre Front Upper Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Centre Front Upper Handlebar deformed |2.1.1b| | 1 |
| Front Brake hose excessively twisted routed incorrectly |1.1.12 |b| |ii|| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Brake reaction bracket insecure |3.2.A1j| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Front position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected revving up when steering operated (6.2.7 (a) (ii)) | 1 |
| Rear Floor brake test indicates a severely juddering brake |3.3C2d.| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear suspension component excessively corroded. |2.4.A.1a| | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Headlamp light intensity severely reduced led bulb fitted (4.1.4 (a)) | 1 |
| Rear Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Headlamp damaged and function impaired |1.2.3a| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Horn missing |1.7.1| | 1 |
| Horn not working |1.7.3a| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |