| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 26 |
| Headlamp aim out of alignment | 19 |
| Registration plate issues | 16 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Drive chain excessively loose |6.2.1d| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Rear reflector missing (4.8.2 (a) (ii)) | 6 |
| Registration plate lamp issues | 6 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition (8.1.1 (a)) | 3 |
| Rear reflector missing |4.8.2 |a| |ii|| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Nearside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Horn not working (7.7 (a)) | 2 |
| Drive chain worn to excess |6.2.1e| | 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 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Offside Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front All direction indicators missing (4.4.1 (a) (ii)) | 1 |
| Offside Handlebar fouling on the fuel tank or bodywork on full lock Handlebars bent.. (2.1.4 (b)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Nearside Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Suspension component has excessive wear or free play (5.3.3 (d)) | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Centre Rear Upper Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Front Steering lock stop ineffective |2.1.3| | 1 |
| Stop lamp does not illuminate immediately a brake applies On front brake |1.3.1a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies when foot brake is applied |1.3.1a| | 1 |
| Stop lamp does not illuminate immediately a brake applies when the front brake is applied |1.3.1a| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Front Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Rear Footrest missing both |6.2.12 |a|| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Horn control defective |1.7.2a| | 1 |
| Brake pedal insecure (1.1.2 (e) (i)) | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Front Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Nearside Front Direction indicator obscured |1.5.1a| | 1 |
| Offside Front Direction indicator obscured |1.5.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Headlamp incorrect colour Showing blue to front. |1.2.1| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Offside Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Offside Rear Upper All position lamps adversely affected by the operation of the horn |1.1.3b| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Nearside Front Brake caliper inadequately mounted (1.1.16 (c) (i)) | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Suspension component has excessive wear or free play Rear shock bolt loose. (5.3.3 (d)) | 1 |
| Rear Upper Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Suspension arm ball joint excessively worn mono shock bush (5.3.4 (a) (i)) | 1 |
| Front wheel spindle loose |2.3.5a| | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Suspension component ball joint dust cover no longer prevents the ingress of dirt rear pivot (5.3.4 (b) (ii)) | 1 |
| Front Stop lamp not working front control (4.3.1 (a) (ii)) | 1 |