| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 7 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Offside Front Lower Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Drive chain worn to excess seized links |6.2.1e| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear suspension component loose swing arm insecure |2.4.A.1a| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Nearside Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Registration plate issues | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Lower Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Lower Brake locking device missing |3.2.A1e| | 1 |
| Brake linkage excessively corroded |3.2.A1c| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Centre Drive chain worn to excess |6.2.1e| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Rear Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Rear Brake linkage excessively corroded |3.2.A1c| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Upper Headlamp incorrect colour |1.2.1| | 1 |
| Brake performance not tested |3.3| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Registration plate lamp issues | 1 |
| Offside Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Centre Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Rear Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Rear Lower Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Rear suspension component seized |2.4A2a|ii|| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Rear Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Fuel hose leaking (6.1.3 (b) (i)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |