| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 17 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 8 |
| Drive chain excessively loose |6.2.1d| | 5 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 3 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 3 |
| Registration plate issues | 3 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear Footrest missing (6.2.12 (a)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 2 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Front Wheel excessively distorted (5.2.2 (c) (i)) | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Offside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Nearside Rear Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Nearside Front Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Nearside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride Drive Chain Adjuster |6.2.1h| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock When turned to left and revved throttle sticks. |2.1.4| | 1 |
| Front Brake fluid contaminated (1.8 (a)) | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Rear Valve stem seriously misaligned (5.2.3 (j)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Offside Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Front Shock absorber has negligible damping effect FRONT SUSPENSION/FORKS SEIZED
HARDLY ANY MOVEMENT AT ALL (5.3.2 (b)) | 1 |
| Rear Footrest missing FITTED DURING TEST (6.2.12 (a)) | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Front suspension assembly component excessively bent both |2.3.1| | 1 |
| Front Brake grabbing severely (1.2.1 (c)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Brake pedal pivot excessively tight |1.1.1 |a|| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Rear Shock absorber insecurely attached (5.3.2 (a) (i)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Drive chain excessively tight |6.1.7 |k| |i|| | 1 |
| Stop lamp not working All (4.3.1 (a) (ii)) | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Nearside Rear Footrest insecure security device missing rear nearside pillion footrest pin |6.2.1a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Brake indicates excessive fluctuation of brake effort Disc physically warped (1.2.1 (e)) | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Rear Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Rear Brake lining|s| less than 1.5 mm thick maximum adjustment |3.2.A1f|i|| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Drive chain worn to excess and sprocket |6.2.1e| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Riders seat insecure |6.2.1a| | 1 |
| Rear reflector defective or damaged by more than 50% of the reflecting surface covered by l plate |4.8.1 |a| |ii|| | 1 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Handlebar retaining device loose |2.2.1 |b| |i|| | 1 |
| Centre Rear Rear reflector on motorcycle obscured Rear reflector obscured by "L Plate" |1.4.2b| | 1 |
| Centre Rear Stop lamp remains on when the brake is released Rear brake light switch is incorrectly adjusted. |1.3.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Drive chain excessively loose (6.1.7 (c) (i)) | 1 |