| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 19 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Horn not working |1.7.3a| | 4 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Direction indicators not working |1.5.1c| | 2 |
| Rear position lamp incorrect colour |1.1.2b| | 2 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Upper Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Fairing insecure and likely to impede the steering |2.1.2e| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Centre Front Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Centre Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Centre Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Nearside Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Nearside Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Centre Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Nearside Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Front Brake cylinder insecurely mounted |3.2.B1a| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Rear Brake lagging in operation (1.2.1 (d)) | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Rear position lamp obscured more than 50% |1.1.1d| | 1 |
| Direction indicators affected by the operation of another lamp all |1.5.1c| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |