| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 11 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 6 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Registration plate issues | 3 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear Exhaust excessively deteriorated |7.1.1a| | 2 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Horn not working |1.7.3a| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Centre Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Brake locking device insecure |3.2.A1e| | 1 |
| Footrest missing Both rear |6.2.1a| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride All four rear hub locking tabs |6.2.1h| | 1 |
| Nearside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Direction indicator missing |1.5.1a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| 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| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected On steering lock to lock check (6.2.7 (a) (ii)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Front Brake lever attachment screws loose |3.1.2b| | 1 |
| Offside Front Indicator tell tale not functioning |1.5.2| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |