| Most common failures | No# failures |
|---|
| Rear reflector missing (4.8.2 (a) (ii)) | 127 |
| Registration plate lamp issues | 86 |
| Headlamp aim out of alignment | 70 |
| Registration plate issues | 68 |
| Stop lamp remains on when the brakes are released | 50 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 47 |
| Rear reflector missing |4.8.2 |a| |ii|| | 35 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 30 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 25 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 25 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 20 |
| 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)) | 19 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 19 |
| Rear Footrest missing (6.2.12 (a)) | 15 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 14 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 14 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 14 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 14 |
| Offside Rear Footrest missing (6.2.12 (a)) | 13 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 12 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 11 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 9 |
| Offside Front Position lamp not working (4.2.1 (a)) | 9 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 8 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 8 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 8 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 8 |
| Stop lamp not working (4.3.1 (a) (ii)) | 8 |
| Rear Brake excessively binding (1.2.1 (f)) | 8 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 7 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 7 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 7 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 7 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 7 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 6 |
| Headlamp aim not tested (4.1.2 (b)) | 6 |
| Front Position lamp not working (4.2.1 (a)) | 6 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 6 |
| Front Brake excessively binding (1.2.1 (f)) | 6 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 6 |
| Offside Rear Footrest missing |6.2.12 |a|| | 5 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 5 |
| Horn not working (7.7 (a) (ii)) | 5 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 5 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 5 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 4 |
| Nearside Rear Footrest missing |6.2.12 |a|| | 4 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 4 |
| Nearside Rear Drive chain excessively loose (6.1.7 (c) (i)) | 4 |
| Nearside Front Position lamp not working (4.2.1 (a)) | 4 |
| Rear Brake pedal insecure (1.1.2 (e) (i)) | 4 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 3 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 3 |
| 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|| | 3 |
| Rear Brake pedal is so short that the brake cannot be readily applied (1.1.2 (d)) | 3 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 3 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 3 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 3 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 3 |
| Offside Front Footrest insecure (6.2.12 (a)) | 3 |
| Headlamp incorrect colour (4.1.4 (a)) | 3 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 3 |
| Rear Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 3 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 3 |
| Brake performance not tested (1.2.1 (g)) | 3 |
| Horn not working (7.7 (a)) | 3 |