| Most common failures | No# failures |
|---|
| Registration plate issues | 30 |
| Headlamp aim out of alignment | 15 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Rear reflector on motorcycle missing |1.4.1| | 6 |
| 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| | 5 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Horn not working |1.7.3a| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear 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 |
| Rear Plate brake test indicates a binding brake |3.3.B1a| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Headlamp aim not tested |1.6| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Front Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Nearside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Wheel spoke excessively loose 2 spokes snapped (5.2.2 (d)) | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Shock absorber has an excessively worn bush |5.3.2 |c|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Drive belt fouling another component |6.2.1d| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Central Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Brake pipe excessively corroded | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Front wheel spindle securing nut locking device missing spacer missing |2.3.5a| | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Rear Rear wheel spindle securing nut locking device missing split pin |2.4.A.2b| | 1 |
| Rear Wheel spoke missing 2 spokes Brocken |5.2.2 |d|| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Handlebar so insecure it is likely to become detached |2.2.1 |b| |ii|| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear reflector on motorcycle missing new fitted |1.4.1| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Centre Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |