| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 88 |
| Rear reflector missing (4.8.2 (a) (ii)) | 86 |
| Registration plate issues | 54 |
| Registration plate lamp issues | 39 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 25 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 21 |
| Rear reflector missing |4.8.2 |a| |ii|| | 17 |
| Front Brake excessively binding (1.2.1 (f)) | 17 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 16 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 12 |
| Horn not working (7.7 (a)) | 11 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 7 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 7 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 6 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition (8.1.1 (a)) | 6 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 5 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 5 |
| Horn not working (7.7 (a) (ii)) | 5 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 5 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 5 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 5 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 4 |
| Stop lamp remains on when the brakes are released | 4 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 4 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 4 |
| Front Brake excessively binding |1.2.1 |f|| | 4 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 3 |
| Rear Footrest missing (6.2.12 (a)) | 3 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| All direction indicators not working (4.4.1 (a) (ii)) | 3 |
| Front Horn not working (7.7 (a) (ii)) | 3 |
| Front Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 3 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 3 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 3 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 3 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Offside Rear Footrest insecure (6.2.12 (a)) | 2 |
| Front Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 2 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Offside Rear Footrest missing (6.2.12 (a)) | 2 |
| Front Stop lamp emits other than a steady red light (4.3.3 (a) (ii)) | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Horn sound not in accordance with requirements (7.7 (c)) | 2 |
| Central Rear Upper Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 2 |
| Headlamp aim unable to be tested (4.1.2 (b)) | 2 |
| Steering headbearing excessively stiff or notchy notchy (2.2.2 (f) (i)) | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |