| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 201 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 102 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 92 |
| Steering headbearing has excessive free play |2.2.2| | 69 |
| Rear reflector on motorcycle missing |1.4.1| | 64 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 60 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 59 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 58 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 50 |
| Nearside Indicator tell tale not functioning |1.5.2| | 49 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 47 |
| Fuel cap sealing washer missing |7.2.2c| | 38 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 34 |
| Offside Steering lock stop ineffective |2.1.3| | 34 |
| Rear reflector on motorcycle obscured |1.4.1| | 31 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 29 |
| Horn not working |1.7.3a| | 24 |
| Nearside Steering lock stop ineffective |2.1.3| | 23 |
| Headlamp switch faulty |1.2.4| | 23 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 23 |
| Exhaust excessively deteriorated |7.1.1a| | 22 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 22 |
| Riders seat insecure |6.2.1a| | 21 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 21 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 21 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 20 |
| Front suspension has inadequate damping effect. |2.3.6c| | 18 |
| Indicator switch defective |1.5.4| | 18 |
| Throttle operating incorrectly |6.2.1f| | 17 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 16 |
| Offside Rear Footrest missing |6.2.1a| | 15 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 13 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 12 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 12 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 12 |
| Nearside Indicator tell tale not operating correctly |1.5.2| | 12 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 11 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 11 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 10 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 10 |
| Indicator tell tale not operating correctly |1.5.2| | 10 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 10 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 10 |
| Headlamp aim not tested |1.6| | 10 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 10 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 9 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 9 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 9 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 8 |
| Offside Indicator tell tale not functioning |1.5.2| | 8 |
| Registration plate issues | 8 |
| Stop lamp remains on when the brake is released |1.3.1e| | 8 |
| Indicator tell tale not functioning |1.5.2| | 8 |
| Rear reflector on motorcycle obscured |1.4.2b| | 8 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 8 |
| Front Steering headbearing has excessive free play |2.2.2| | 7 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 7 |
| Nearside Rear Footrest missing |6.2.1a| | 7 |
| Nearside Steering lock stop missing |2.1.3| | 7 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 6 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 6 |
| Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 6 |
| Offside Steering lock stop missing |2.1.3| | 6 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 6 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 6 |
| Brake lever has inadequate reserve travel |3.1.3b| | 6 |
| Offside Front Steering lock stop ineffective |2.1.3| | 6 |
| Direction indicators not working |1.5.1c| | 6 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 6 |
| Front mudguard insecure |2.3.7| | 6 |
| Headlamp insecure |1.2.3b| | 6 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 6 |
| Horn control defective |1.7.2a| | 5 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Front suspension assembly component excessively corroded. |2.3.1| | 5 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 5 |
| Direction indicator not working |1.5.1c| | 5 |
| Fuel pipe leaking |7.2.1a| | 5 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 5 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 5 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 5 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 4 |
| Handlebar deformed |2.1.1b| | 4 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 4 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 4 |
| Fuel hose leaking |7.2.1a| | 4 |
| Rear Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 4 |
| Front Brake lever insecure |3.1.2a| | 4 |
| Rear Brake lever insecure |3.1.2a| | 4 |
| Front Steering lock stop ineffective |2.1.3| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 4 |
| Nearside Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 4 |
| Offside Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 4 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Offside Rear suspension bush has excessive free play |2.4.A2a|i|| | 4 |
| Stop lamp remains on when the brakes are released | 4 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 4 |
| Nearside Direction indicator not working |1.5.1c| | 4 |
| Nearside Front Direction indicators not working |1.5.1c| | 4 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 4 |
| Horn not working (7.7 (a) (ii)) | 4 |