| Most common failures | No# failures |
|---|
| Registration plate issues | 15 |
| Headlamp aim out of alignment | 12 |
| Rear reflector on motorcycle missing |1.4.1| | 8 |
| 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 Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Horn not working |1.7.3a| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front Headlamp missing not working (1.2.3a) | 2 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 2 |
| Direction indicators not working (1.5.1c) | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Horn not working (1.7.3a) | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Rear Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Drive chain worn to excess |6.2.1e| | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Rear Footrest missing (6.2.1a) | 1 |
| Front Shock absorber has a serious fluid leak Both Front |5.3.2 |b|| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Horn not working New horn fitted. (7.7 (a) (ii)) | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |