| Most common failures | No# failures |
|---|
| Registration plate issues | 43 |
| Headlamp aim out of alignment | 25 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Horn not working |1.7.3a| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| 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| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Drive belt excessively loose. |6.2.1d| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear suspension has a modification which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Rear Brake pipe inadequately supported |3.2.B2b| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Rear Motorcycle structure joining/attachment plate or fastening insecure |6.1.1 |b| |i|| | 1 |
| Offside Rear Motorcycle structure joining/attachment plate or fastening insecure |6.1.1 |b| |i|| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Offside Rear Suspension arm attachment bracket/mounting insecure (5.3.3 (a) (i)) | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Stop lamp does not illuminate immediately a brake applies front brake |1.3.1a| | 1 |
| Lower Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Offside Front All direction indicators obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Drive belt pulley excessively loose |6.1.7 |c| |i|| | 1 |
| Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Inner Horn not working |1.7.3a| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear Wheel fixing missing |multiple fixings| split cotter missing |5.2.1 |a| |i|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Exhaust markings indicating not for road use or similar wording (6.1.2 (c)) | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Offside Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Stop lamp does not illuminate immediately a brake applies rear control |1.3.1a| | 1 |
| Offside Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |