| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 6 |
| Horn not working |1.7.3a| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| All position lamps adversely affected by the operation of the horn |1.1.3b| | 2 |
| Registration plate issues | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Brake pipe union leaking fluid |3.2.B4| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake performance not tested |3.3| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Centre Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Horn not working |1.7.3a| | 1 |