| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 34 |
| Registration plate issues | 33 |
| Headlamp aim out of alignment | 14 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 11 |
| Horn not working |1.7.3a| | 10 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 8 |
| Front wheel bearings are excessively rough |2.3.5b| | 6 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 6 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Horn missing |1.7.1| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 5 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Rear Wheel spoke excessively loose |4.2.1b| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Headlamp aim not tested |1.6| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Centre Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Rear Wheel spoke missing |4.2.1b| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Centre Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Centre Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Horn missing switch missing |1.7.1| | 1 |
| Nearside Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Centre Drive chain excessively loose |6.2.1d| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Front Lower Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Brake pipe union leaking fluid caliper union |3.2.B4| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Horn missing |1.7.1| | 1 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Horn missing (1.7.1) | 1 |
| Rear wheel bearings have excessive free play Play in rear wheel |2.4.A.2c| | 1 |
| Fuel system component leaking Fuel leak when running |7.2.1a| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Lower Rear reflector on motorcycle missing |1.4.1| | 1 |
| 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 |
| Brake hose excessively deteriorated | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Nearside Front Upper Horn missing |1.7.1| | 1 |
| Nearside Rear Upper Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Rear Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Nearside Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |