| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 16 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Horn not working |1.7.3a| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Nearside Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear reflector on motorcycle missing (1.4.1) | 1 |
| Headlamp aim beam image kick up to the offside (1.6) | 1 |
| Nearside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Front Motorcycle structure cracked |6.1.1a| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Brake pedal mounting insecure |3.1.2a| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear Brake pedal mounting insecure |3.1.2a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |