| Most common failures | No# failures |
|---|
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 36 |
| Headlamp aim out of alignment | 27 |
| Registration plate lamp issues | 26 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 20 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 20 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 19 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 16 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 14 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 12 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 9 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 9 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 7 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 7 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 7 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 7 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 6 |
| Registration plate issues | 6 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 6 |
| Stop lamp not working (4.3.1 (a) (ii)) | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 6 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 6 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 4 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 4 |
| Horn not working (7.7 (a) (ii)) | 4 |
| Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Front Brake excessively binding (1.2.1 (f)) | 4 |
| Rear Brake excessively binding (1.2.1 (f)) | 4 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 4 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 4 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 3 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 3 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 3 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 3 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 3 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 3 |
| Rear Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 3 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 2 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 2 |
| Drive chain excessively tight |6.1.7 |k| |i|| | 2 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 2 |
| Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 2 |
| Front Horn not working (7.7 (a) (ii)) | 2 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 2 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear Drive chain worn to excess (6.1.7 (c) (i)) | 2 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 2 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 2 |
| Horn not working (7.7 (a)) | 2 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Offside Front Throttle operating incorrectly (6.2.7 (a) (i)) | 2 |
| Front Horn not working (7.7 (a)) | 2 |