| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 12 |
| Rear reflector on motorcycle missing |1.4.1| | 12 |
| Rear reflector on motorcycle obscured |1.4.1| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| 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| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Offside Steering lock stop ineffective |2.1.3| | 2 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Horn not working |1.7.3a| | 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 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Nearside Steering lock stop maladjusted |2.1.3| | 2 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 2 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Handlebar cracked |2.1.1b| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Rear mono-shock insecure |2.4.B.4| | 1 |
| Front Steering lock stop ineffective |2.1.3| | 1 |
| Offside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Front Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Offside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Registration plate issues | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Upper Front suspension assembly component loose |2.3.1| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Steering operation restricted in free movement from lock to lock |2.1.4 |c|| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition |8.1.1 |a|| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Offside Steering lock stop maladjusted |2.1.3| | 1 |
| Horn control not readily accesible. |1.7.2a| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear 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 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear Brake component cracked and seriously reduced in strength |3.2.A1| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Offside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |