| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 8 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 8 |
| Drive chain worn to excess |6.2.1e| | 7 |
| Registration plate issues | 7 |
| Drive chain excessively loose |6.2.1d| | 7 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Registration plate lamp issues | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Rear Rear wheel bearings have excessive free play Rear wheel bearings have excessive play |2.4.A.2c| | 1 |
| Direction indicators not working All indicators missing |1.5.1c| | 1 |
| Rear reflector on motorcycle missing Rear reflector missing |1.4.1| | 1 |
| Front wheel spindle loose |2.3.3a| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Floor brake test indicates a severely juddering brake |3.3C2d.| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride Incorrect joining link in chain- |6.2.1h| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Brake lining|s| contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Brake lining|s| contaminated by oil or grease |3.2.A1k| | 1 |
| Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Stop lamp does not illuminate immediately a brake applies Front switch faulty |1.3.1a| | 1 |
| Centre Front Front position lamp insecure |1.1.1c| | 1 |
| Offside Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Nearside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear Brake lever has restricted free movement |1.1.15 |e|| | 1 |
| Offside Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls from front (4.3.2 (a) (iii)) | 1 |
| Stop lamp does not emit a steady light Stop lamp bulb blown, |1.3.1b| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Front Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Front shock absorber seal failed and leaking oil Both front. |2.3.3| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Brake lever insecure lever adjuster loose |1.1.2 |e| |i|| | 1 |
| Offside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Front Brake component is severely distorted |3.1.5| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |