| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 7 |
| Drive chain excessively loose |6.2.1d| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Registration plate issues | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| All direction indicators not working (4.4.1 (a) (ii)) | 2 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 2 |
| Horn not working |1.7.3a| | 2 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Engine mounting/bracket missing (6.1.8 (a) (ii)) | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Front 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 |
| Rear Chain guard insecure |6.2.1c| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| All direction indicators not working Stay on when throttle applied |4.4.1 |a| |ii|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Nearside Rear Footrest missing pillion |6.2.12 |a|| | 1 |
| Offside Rear Footrest missing pillion |6.2.12 |a|| | 1 |
| Drive chain excessively tight |6.1.7 |k| |i|| | 1 |
| Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Headlamp incorrect colour (4.1.4 (a)) | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering To RHS |2.5.1| | 1 |
| Inner Front Upper Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Front Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Front Brake has no recorded effort at a wheel |1.2.1 |a| |ii|| | 1 |
| Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Rear Brake linkage excessively corroded sticking |3.2.A1c| | 1 |
| Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Stop lamp light intensity significantly reduced (4.3.3 (a) (ii)) | 1 |
| Suspension arm mounting modified so the suspension is inoperative exhaust fixed to swinging arm (5.3.3 (c) (ii)) | 1 |
| Direction indicators not working All
|1.5.1c| | 1 |
| Fuel cap ineffective plastic bag as seal (6.1.3 (b) (i)) | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Drive chain sprocket carrier worn to excess drive sprocket inscure |6.2.1e| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Horn missing |1.7.1| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Brake lever attachment screws loose |3.1.2b| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Brake hose excessively deteriorated | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |