| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 7 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 4 |
| Indicator switch defective |1.5.4| | 4 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Front suspension has inadequate damping effect. |2.3.6c| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front Brake lever mounting insecure |3.1.2a| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Horn not working |1.7.3a| | 2 |
| Handlebar mounting clamp loose |2.1.1a| | 2 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 2 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Riders seat insecure |6.2.1a| | 1 |
| Front Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Nearside Footrest missing |6.2.1a| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Indicator switch defective |1.5.4| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Floor brake test Neither brake control achieves an efficiency of 25% |3.3.C1b| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Indicator switch does not operate the direction indicators on the side selected |1.5.4| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Offside Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Brake lever is inoperative |3.1.3c| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Rear Brake lever mounting insecure |3.1.2a| | 1 |
| Front Brake locking device missing |3.2.A1e| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Nearside Indicator switch does not operate the direction indicators on the side selected |1.5.4| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |