| Most common failures | No# failures |
|---|
| Registration plate lamp issues | 102 |
| Headlamp aim out of alignment | 63 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 36 |
| Stop lamp remains on when the brakes are released | 25 |
| Stop lamp not working (4.3.1 (a) (ii)) | 17 |
| Rear Position lamp not working (4.2.1 (a)) | 15 |
| Registration plate issues | 12 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 11 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 10 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 9 |
| Offside Front Position lamp not working (4.2.1 (a)) | 9 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 9 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 7 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 7 |
| Nearside Front Position lamp not working (4.2.1 (a)) | 7 |
| Front Position lamp not working (4.2.1 (a)) | 6 |
| Headlamp aim not tested (4.1.2 (b)) | 6 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 6 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 6 |
| Stop lamp not working |4.3.1 |a| |ii|| | 5 |
| Horn not working (7.7 (a) (ii)) | 5 |
| Offside Rear Position lamp not working (4.2.1 (a)) | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 4 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Horn not working (7.7 (a)) | 4 |
| All position lamps not working (4.2.1 (a)) | 4 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 4 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 4 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 4 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 3 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 3 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Rear Position lamp not working |4.2.1 |a|| | 3 |
| Front brake disc in such a condition that it is seriously weakened | 3 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 3 |
| Rear Brake lining(s) less than 1.0 mm thick (1.1.13 (a)) | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Nearside Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Front Brake grabbing severely (1.2.1 (c)) | 2 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 2 |
| Front Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 2 |
| Headlamp insecure (4.1.1 (c)) | 2 |
| Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 2 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 2 |
| Wheel fixing loose (multiple fixings) (5.2.1 (a) (i)) | 2 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 2 |
| Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Front All position lamps not working (4.2.1 (a)) | 2 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 2 |
| Rear brake disc in such a condition that it is seriously weakened | 2 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Front Headlamp not working on main beam |4.1.1 |a| |ii|| | 2 |
| Nearside Rear Position lamp not working (4.2.1 (a)) | 2 |
| Offside Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |
| Brake performance not tested (1.2.1 (g)) | 2 |
| Front Position lamp not working BOTH (4.2.1 (a)) | 2 |
| Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 2 |
| Rear Position lamp light intensity significantly reduced (4.2.3 (a) (ii)) | 2 |
| Riders seat insecure (6.2.5 (a) (ii)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |