| Most common failures | No# failures |
|---|
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 9 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 8 |
| Headlamp aim out of alignment | 7 |
| Rear reflector on motorcycle missing |1.4.1| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Registration plate issues | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Horn not working |1.7.3a| | 3 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Fuel tank leaking |7.2.1a| | 2 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Rear position lamp flickers when tapped lightly by hand |1.1.3c| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Centre Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Steering lock stop maladjusted |2.1.3| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Front Front position lamp adversely affected by the operation of another lamp low beam |1.1.3b| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| 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| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 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 |
| Centre Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Front Brake pipe union leaking fluid |3.2.B4| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Front Drive chain worn to excess |6.2.1e| | 1 |
| Headlamp light intensity severely reduced |4.1.4 |a|| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Brake pedal cannot be applied smoothly |3.1.3d| | 1 |