| Most common failures | No# failures |
|---|
| Horn not loud enough to be heard by another road user |1.7.3a| | 7 |
| Headlamp aim out of alignment | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Horn not working |1.7.3a| | 4 |
| Rear reflector on motorcycle obscured |1.4.1| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Headlamp insecure |1.2.3b| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Indicator tell tale not functioning |1.5.2| | 2 |
| Direction indicator not working |1.5.1c| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Registration plate issues | 2 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 2 |
| Front Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Centre Rear Horn not working |1.7.3a| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Footrest missing N/S PILLION |6.2.1a| | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Chain guard fouling another component rubbing on chain |6.2.1c| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Drive chain worn to excess |6.2.1e| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |