| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 46 |
| Registration plate lamp issues | 34 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 32 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 32 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 23 |
| Stop lamp remains on when the brakes are released | 22 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 22 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 21 |
| Horn not working (7.7 (a)) | 18 |
| Rear Position lamp not working (4.2.1 (a)) | 17 |
| Registration plate issues | 15 |
| Exhaust system insecure (6.1.2 (a)) | 15 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 14 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 12 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 12 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 12 |
| Horn not working (7.7 (a) (ii)) | 11 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 10 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 10 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 9 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 9 |
| 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)) | 9 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 9 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 9 |
| Riders seat insecure (6.2.5 (a) (ii)) | 8 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 8 |
| Rear reflector missing (4.8.2 (a) (ii)) | 8 |
| Stop lamp not working (4.3.1 (a) (ii)) | 8 |
| Headlamp insecure (4.1.1 (c)) | 7 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 7 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 6 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 6 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 6 |
| Headlamp aim not tested (4.1.2 (b)) | 5 |
| Front brake disc in such a condition that it is seriously weakened | 4 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 4 |
| Nearside Front Shock absorber has negligible damping effect (5.3.2 (b)) | 4 |
| Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 4 |
| All direction indicators not working (4.4.1 (a) (ii)) | 4 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 4 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 4 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 3 |
| Front Shock absorber has negligible damping effect |5.3.2 |b|| | 3 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 3 |
| Rear Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 3 |
| Offside Front Shock absorber has negligible damping effect (5.3.2 (b)) | 3 |
| Handlebar mounting so insecure that steering is adversely affected (2.2.1 (a) (ii)) | 3 |
| Handlebar mounting insecure (2.2.1 (a) (i)) | 3 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 3 |
| Front Position lamp not working (4.2.1 (a)) | 3 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Nearside Front Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 2 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 2 |
| Front Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear Brake pipe likely to become detached or damaged (1.1.11 (d) (ii)) | 2 |
| Front Horn sound not in accordance with requirements (7.7 (c)) | 2 |
| Front Motorcycle structure joining/attachment plate or fastening insecure (6.1.1 (b) (i)) | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Steering operation impeded by a fairing (2.1.4 (e)) | 2 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Nearside Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Brake performance not tested (1.2.1 (g)) | 2 |
| Rear Wheel fixing missing (multiple fixings) (5.2.1 (a) (i)) | 2 |
| Front Horn not working (7.7 (a) (ii)) | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Headlamp insecure inc body panel (4.1.1 (c)) | 2 |
| Rear brake disc in such a condition that it is seriously weakened | 2 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 2 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 2 |
| Front Brake grabbing severely (1.2.1 (c)) | 2 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Rear Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected (5.2.1 (c) (ii)) | 2 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 2 |
| Nearside Front Position lamp not working (4.2.1 (a)) | 2 |
| Horn sound not in accordance with requirements (7.7 (c)) | 2 |
| Front Shock absorber has negligible damping effect forks seized (5.3.2 (b)) | 2 |
| Exhaust silencer insecure (8.1.1 (b) (i)) | 2 |
| Nearside Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Rear Brake performance unable to be tested (1.2.1 (g)) | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |