| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 8 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 6 |
| Rear Position lamp not working (4.2.1 (a)) | 5 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 4 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Stop lamp not working front brake (4.3.1 (a) (ii)) | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Headlamp insecure (4.1.1 (c)) | 2 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Suspension component missing drive chain cushion/Gard to swing arm missing (5.3.3 (a) (ii)) | 1 |
| Suspension component has an unsafe modification drive chain rubbing an swing arm (5.3.3 (c) (i)) | 1 |
| Offside Stop lamp not working foot brake (4.3.1 (a) (ii)) | 1 |
| Position lamp switch does not operate in accordance with the requirements button missing (4.2.2 (a)) | 1 |
| Handlebar deformed to the extent that steering is affected out of alignment (2.2.1 (c) (ii)) | 1 |
| Rear Brake component insecure (1.1.21 (c)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Chain guard insecure (6.1.7 (i)) | 1 |
| Stop lamp not working for front brake (4.3.1 (a) (ii)) | 1 |
| Central Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Central Front Position lamp not working (4.2.1 (a)) | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Suspension arm ball joint excessively worn Swing arm bushes. (5.3.4 (a) (i)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Steering operation linkage fouling when handlebars turned from lock to lock and engine idle speed increases (2.1.4 (a)) | 1 |
| Rear Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Rear Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected (5.2.1 (c) (ii)) | 1 |
| Rear Brake lagging in operation (1.2.1 (d)) | 1 |
| Stop lamp not working rear brake (4.3.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Stop lamp not working from hand brake. (4.3.1 (a) (ii)) | 1 |
| Offside Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Registration plate lamp issues | 1 |
| Offside Front Brake lever is so short that the brake cannot be readily applied lever broken (1.1.2 (d)) | 1 |
| Nearside Direction indicator not working (4.4.1 (a) (ii)) | 1 |