| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 17 |
| Registration plate issues | 17 |
| Rear reflector on motorcycle missing |1.4.1| | 9 |
| Rear reflector missing (4.8.2 (a) (ii)) | 6 |
| Rear reflector missing |4.8.2 |a| |ii|| | 5 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Horn not working |1.7.3a| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Direction indicators not working lh indicator not working |1.5.1c| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Offside Handlebar mounting excessively deteriorated |flexible type| |2.1.1d| | 1 |
| Stop lamp not working when operated on front brake |4.3.1 |a| |ii|| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition |7.1.2| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Drive chain sprocket so loose it is likely to fail Front sprocket nut |6.1.7 |c| |ii|| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator incorrect colour |4.4.3 |a|| | 1 |
| Offside Rear Direction indicator incorrect colour |4.4.3 |a|| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Exhaust markings indicating not for road use or similar wording |6.1.2 |c|| | 1 |
| Front All direction indicators obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Nearside Front Steering lock stop ineffective |2.1.3| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Front Steering lock stop ineffective |2.1.3| | 1 |
| Rear Wheel excessively corroded (5.2.2 (c) (i)) | 1 |
| Rear Wheel fractured (5.2.2 (a)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Registration plate lamp issues | 1 |
| Rear Brake caliper insecure (1.1.16 (c) (i)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Front Position lamp not working Bulb replaced (4.2.1 (a)) | 1 |
| Nearside Rear Direction indicator not working not working (4.4.1 (a) (ii)) | 1 |
| Central Rear Stop lamp not working front brake light not working (4.3.1 (a) (ii)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |