| Most common failures | No# failures |
|---|
| Registration plate issues | 17 |
| Rear reflector on motorcycle missing |1.4.1| | 12 |
| Headlamp aim out of alignment | 8 |
| Rear reflector missing (4.8.2 (a) (ii)) | 5 |
| Stop lamp remains on when the brakes are released | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Registration plate lamp issues | 2 |
| Handlebar mounting clamp loose |2.1.1a| | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Centre Front Lower Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Rear Headlamp reflector missing |4.1.1 |b| |ii|| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Nearside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Centre Front Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Front Brake disc insecure (1.1.14 (a) (ii)) | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |