| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 21 |
| Steering headbearing has excessive free play |2.2.2| | 9 |
| Brake hose excessively deteriorated | 4 |
| Registration plate issues | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Direction indicators not working |1.5.1c| | 2 |
| Rear 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 |
| Headlamp insecure |1.2.3b| | 2 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Horn not working |1.7.3a| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Rear Lower Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front suspension assembly component excessively bent |2.3.1| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Steering lock stop maladjusted |2.1.3| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Brake performance not tested |3.3| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Headlamp switch faulty high beam does not stay on when operated. needs to be held in position. |1.2.4| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Upper Direction indicators not working |1.5.1c| | 1 |
| Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Upper Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Offside Front Horn not working |1.7.3a| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Offside Front Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Front Position lamp not working (4.2.1 (a)) | 1 |
| Footrest missing rubbers missing (6.2.12 (a)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Riders seat insecure not locking (6.2.5 (a) (ii)) | 1 |