| Most common failures | No# failures |
|---|
| Registration plate issues | 41 |
| Rear reflector missing (4.8.2 (a) (ii)) | 23 |
| Rear reflector missing |4.8.2 |a| |ii|| | 13 |
| Horn not working (7.7 (a)) | 13 |
| Headlamp aim out of alignment | 12 |
| Stop lamp remains on when the brakes are released | 8 |
| Horn not working (7.7 (a) (ii)) | 7 |
| Registration plate lamp issues | 7 |
| Horn not working |7.7 |a| |ii|| | 6 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 5 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 5 |
| Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 3 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 2 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 2 |
| Front Wheel excessively distorted (5.2.2 (c) (i)) | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Front Stop lamp switch with a delay in operation |4.3.2 |a| |ii|| | 1 |
| Stop lamp not working front brake |4.3.1 |a| |ii|| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Horn missing |1.7.1| | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Suspension component ball joint excessively worn (5.3.4 (a) (i)) | 1 |
| Rear reflector reflecting white to the rear (4.8.2 (a) (ii)) | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Wheel spindle loose (5.2.1 (c) (i)) | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Front Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Rear Suspension component has excessive wear or free play swingarm bearings (5.3.3 (d)) | 1 |
| Front Suspension component damaged and seriously weakened front wheel spindle damaged, bearings incorrectly fitted, binding (5.3.3 (b) (i)) | 1 |
| Front Wheel spindle loose (5.2.1 (c) (i)) | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Rear Lower Suspension component pin or bush excessively worn shock bearing |5.3.4 |a| |i|| | 1 |
| Fork yoke in such a condition that steering control is adversely affected offside steering stop insecure |2.2.2 |d| |ii|| | 1 |
| Suspension component pin or bush excessively worn swinging arm bearings |5.3.4 |a| |i|| | 1 |
| Suspension component pin or bush excessively worn bottom shock bearing |5.3.4 |a| |i|| | 1 |
| Rear Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Rear Stop lamp lens defective such that the emitted light is adversely affected (4.3.1 (b) (ii)) | 1 |
| Front Wheel excessively distorted |5.2.2 |c| |i|| | 1 |
| Rear Lower Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Rear Suspension arm pin or bush excessively worn swing arm bushes (5.3.4 (a) (i)) | 1 |
| Stop lamp not working front control |4.3.1 |a| |ii|| | 1 |
| Rear Suspension arm ball joint excessively worn swinging arm (5.3.4 (a) (i)) | 1 |
| Front Valve stem seriously misaligned (5.2.3 (j)) | 1 |
| Stop lamp not working from rear control |4.3.1 |a| |ii|| | 1 |
| Rear Stop lamp not working front and rear controls (4.3.1 (a) (ii)) | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Rear reflector defective or damaged by more than 50% of the reflecting surface (4.8.1 (a) (ii)) | 1 |
| Rear brake disc in such a condition that it is seriously weakened | 1 |