| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 27 |
| Registration plate issues | 13 |
| Rear reflector on motorcycle missing |1.4.1| | 10 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 8 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 7 |
| 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| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| 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)) | 4 |
| Horn not working |1.7.3a| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Rear Brake back plate insecure (1.1.14 (d)) | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Stop lamp not working FRONT BRAKE LEVER (4.3.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 1 |
| Central Front Horn not working button sticks (7.7 (a) (ii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Throttle operating incorrectly does not return. (6.2.7 (a) (i)) | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Headlamp dipped beam flickers when tapped lightly by hand |1.2.2c| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Footrest missing both rear (6.2.12 (a)) | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front wheel spindle loose |2.3.5a| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls front switch (4.3.2 (a) (iii)) | 1 |
| Offside Front All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Centre Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Throttle operating incorrectly STICKING, REPAIRED ON TEST |6.2.1f| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Stop lamp emits other than a steady red light (4.3.3 (a) (ii)) | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Registration plate lamp issues | 1 |
| Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Nearside Front Brake pipe union leaking fluid |3.2.B4| | 1 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear brake binding | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Headlamp damaged and function impaired |1.2.3a| | 1 |
| Rear Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| Nearside Rear Direction indicator obscured |1.5.1a| | 1 |
| Offside Rear Direction indicator obscured |1.5.1a| | 1 |
| Rear Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Nearside Rear Direction indicator obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Offside Rear Direction indicator obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Nearside Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Offside Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |