| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 53 |
| Stop lamp remains on when the brakes are released | 50 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 38 |
| Rear Position lamp not working (4.2.1 (a)) | 37 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 24 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 23 |
| Horn not working (7.7 (a)) | 22 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 21 |
| Registration plate issues | 19 |
| Stop lamp not working (4.3.1 (a) (ii)) | 19 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 18 |
| Offside Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 17 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 17 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 15 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 14 |
| Registration plate lamp issues | 14 |
| Nearside Front Direction indicator incorrect colour (4.4.3 (a)) | 14 |
| Offside Front Direction indicator incorrect colour (4.4.3 (a)) | 14 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 13 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 13 |
| Nearside Front Position lamp not working (4.2.1 (a)) | 12 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 12 |
| Horn not working (7.7 (a) (ii)) | 11 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 11 |
| Nearside Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 10 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 10 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 10 |
| Rear brake disc in such a condition that it is seriously weakened | 9 |
| Front brake disc in such a condition that it is seriously weakened | 9 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 9 |
| Front Position lamp not working (4.2.1 (a)) | 9 |
| Rear reflector missing (4.8.2 (a) (ii)) | 9 |
| Offside Front Position lamp not working (4.2.1 (a)) | 8 |
| Headlamp insecure (4.1.1 (c)) | 8 |
| Front Brake lever has restricted free movement (1.1.15 (e)) | 6 |
| Horn sound not in accordance with requirements (7.7 (c)) | 6 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 6 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 6 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 5 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 5 |
| Horn not working |7.7 |a| |ii|| | 4 |
| Front Brake lever is bent and the brake cannot be readily applied (1.1.2 (d)) | 4 |
| Rear Brake grabbing severely (1.2.1 (c)) | 4 |
| Rear Brake excessively binding (1.2.1 (f)) | 4 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 4 |
| Front Wheel excessively distorted (5.2.2 (c) (i)) | 4 |
| Riders seat insecure (6.2.5 (a) (ii)) | 4 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 4 |
| All direction indicators not working (4.4.1 (a) (ii)) | 4 |
| Front Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 4 |
| Front Brake disc contaminated (1.1.14 (b)) | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 4 |
| Front Position lamp not working Both (4.2.1 (a)) | 4 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 4 |
| Nearside Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 4 |
| Rear Position lamp not working |4.2.1 |a|| | 3 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 3 |
| Rear Brake disc insecure (1.1.14 (a) (ii)) | 3 |
| Rear Shock absorber has an excessively worn bush (5.3.2 (c)) | 3 |
| Rear Brake lining(s) less than 1.0 mm thick (1.1.13 (a)) | 3 |
| Rear Wheel excessively distorted (5.2.2 (c) (i)) | 3 |
| Rear Wheel fixing loose (single fixing) (5.2.1 (a) (ii)) | 3 |
| Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 3 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 3 |
| Front Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 3 |
| Offside Rear Direction indicator incorrect colour (4.4.3 (a)) | 3 |
| Handlebar excessively deformed (2.2.1 (c) (i)) | 3 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 3 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 3 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 3 |
| Front Horn not working (7.7 (a)) | 3 |
| Nearside Footrest insecure (6.2.12 (a)) | 3 |