| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 24 |
| Registration plate issues | 20 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Horn not working |1.7.3a| | 8 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Front wheel bearings have excessive free play |2.3.5b| | 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| | 7 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Horn missing |1.7.1| | 6 |
| Headlamp aim out of alignment | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Horn control defective |1.7.2a| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Horn is not continous or uniform bulb horn fitted |1.7.3c| | 1 |
| Horn sound not in accordance with requirements weak (7.7 (c)) | 1 |
| Centre Rear Rear position lamp insecure |1.1.1c| | 1 |
| Brake excessively binding (1.2.1 (f)) | 1 |
| Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Rear Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Rear Brake disc contaminated (1.1.14 (b)) | 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 |
| Fuel system component leaking |7.2.1a| | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Centre Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Centre Rear Rear position lamp missing |1.1.1a| | 1 |
| Headlamp main beam flickers when tapped lightly by hand |1.2.2c| | 1 |
| An item not tested |Manual| | 1 |
| Centre Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Centre Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Central Rear Lower Suspension arm mounting modified so the suspension is likely to fail other components (5.3.3 (c) (ii)) | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Vehicle identification number has more than one different number displayed |6.3.5b| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Centre Front Horn not working |1.7.3a| | 1 |
| Rear suspension component seized |2.4A2a|ii|| | 1 |
| Rear Rear wheel insecure |4.2.3b| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Rear mono-shock pivot excessively worn all linkage bushes |2.4.B.4| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Headlamp aim not tested |1.6| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Brake caliper damaged Caliper pad pin worn by a third. |1.1.16 |a| |i|| | 1 |