| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 7 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Rear Wheel spoke excessively loose |4.2.1b| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Front Wheel spoke excessively loose |4.2.1b| | 3 |
| Registration plate issues | 3 |
| Headlamp insecure |1.2.3b| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Horn not working |1.7.3a| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Centre Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| 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| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Drive chain worn to excess |6.2.1e| | 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 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Offside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Front Motorcycle structure joining/attachment plate or fastening insecure mud guard |6.1.1 |b| |i|| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Centre Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Inner Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Brake pedal is inoperative |3.1.3c| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Braking system does not have an approriate system/s fitted according to its age |3.1.1| | 1 |
| Brake performance not tested |3.3| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |