| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 6 |
| Headlamp aim out of alignment | 5 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Registration plate issues | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Rear position lamp adversely affected by the operation of another lamp tail light effected by indicators |1.1.3b| | 1 |
| Horn not working |1.7.3a| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Clutch lever bent so it cannot be readily operated. |6.2.1g| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake pipe inadequately supported |3.2.B2b| | 1 |
| Front Decelerometer brake test indicates a sticking brake |3.3.E1d| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Shock absorber likely to become detached |5.3.2 |a| |ii|| | 1 |
| Rear Lower Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Engine mounting/bracket missing (6.1.8 (a) (ii)) | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies front switch |1.3.1a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Nearside Front Position lamp switch insecure |1.1.4b| | 1 |
| Offside Front Position lamp switch insecure |1.1.4b| | 1 |
| Rear Rear position lamp insecure |1.1.1c| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |