| Most common failures | No# failures |
|---|
| Registration plate issues | 117 |
| Rear reflector on motorcycle missing |1.4.1| | 70 |
| Headlamp aim out of alignment | 66 |
| Registration plate lamp issues | 39 |
| Rear reflector missing (4.8.2 (a) (ii)) | 27 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 26 |
| Horn not working |1.7.3a| | 20 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 19 |
| Rear reflector missing |4.8.2 |a| |ii|| | 17 |
| Headlamp aim beam image kick up to the offside |1.6| | 15 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 14 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 10 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 9 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 8 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 8 |
| 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| | 7 |
| Nearside Rear Footrest missing |6.2.1a| | 7 |
| Offside Rear Footrest missing |6.2.1a| | 7 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 7 |
| Drive chain excessively loose |6.2.1d| | 6 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 6 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 6 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 6 |
| Horn not working |7.7 |a| |ii|| | 5 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 5 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 5 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 5 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 5 |
| Horn not working (7.7 (a) (ii)) | 5 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 4 |
| Rear Footrest missing |6.2.1a| | 4 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Exhaust markings indicating not for road use or similar wording (6.1.2 (c)) | 3 |
| Rear reflector on motorcycle obscured |1.4.1| | 3 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Footrest missing (6.2.12 (a)) | 2 |
| Rear All direction indicators obviously incorrectly positioned |4.4.3 |a|| | 2 |
| Rear Footrest missing |6.2.12 |a|| | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Horn not working (7.7 (a)) | 2 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 2 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 2 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Front Stop lamp emits other than a steady red light |1.3.1b| | 2 |
| Rear Position lamp not working |4.2.1 |a|| | 2 |