| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 41 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 28 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 27 |
| Rear reflector on motorcycle missing |1.4.1| | 19 |
| Drive chain excessively loose |6.2.1d| | 17 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 13 |
| Registration plate issues | 12 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 11 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 11 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 9 |
| Steering headbearing has excessive free play |2.2.2| | 9 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 8 |
| Drive chain worn to excess |6.2.1e| | 8 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 7 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 7 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 7 |
| Horn not working |1.7.3a| | 6 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 6 |
| Front wheel bearings have excessive free play |2.3.5b| | 6 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 6 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 5 |
| Direction indicators not working |1.5.1c| | 5 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Rear Drive chain excessively loose |6.2.1d| | 4 |
| Registration plate lamp issues | 4 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Offside Front Direction indicator not working |1.5.1c| | 4 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Brake locking device missing |3.2.A1e| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Rear Brake locking device missing |3.2.A1e| | 3 |
| Nearside Front Direction indicators not working |1.5.1c| | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Front Brake disc|s| insecure |3.2.A1g| | 3 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 3 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 3 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 3 |
| Headlamp aim not tested |1.6| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Offside Front Brake disc|s| insecure |3.2.A1g| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 2 |
| Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Fuel tank leaking |7.2.1a| | 2 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Centre Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Nearside Front suspension assembly component cracked |2.3.1| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Upper Rear mono-shock pivot excessively worn |2.4.B.4| | 2 |
| Rear Drive chain worn to excess |6.2.1e| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear mono-shock pivot seized |2.4.B.4| | 2 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |