| Most common failures | No# failures |
|---|
| Registration plate issues | 76 |
| Rear reflector on motorcycle missing |1.4.1| | 70 |
| Headlamp aim out of alignment | 56 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 16 |
| Horn not working |1.7.3a| | 14 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Headlamp aim beam image kick up to the offside |1.6| | 10 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 10 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Drive chain excessively loose |6.2.1d| | 8 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Throttle operating incorrectly |6.2.1f| | 6 |
| Registration plate lamp issues | 6 |
| Drive chain excessively tight |6.2.1d| | 5 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 5 |
| Rear Position lamp not working (4.2.1 (a)) | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Rear reflector missing |4.8.2 |a| |ii|| | 4 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Rear Position lamp not working |4.2.1 |a|| | 4 |
| 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| | 4 |
| Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Drive chain fouling another component |6.2.1d| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Offside Rear Direction indicators not working |1.5.1c| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| An item not tested |Manual| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Direction indicator missing |1.5.1a| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Rear Drive chain fouling another component |6.2.1d| | 2 |
| Rear 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| | 2 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Fuel hose leaking |7.2.1a| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Rear Lower Shock absorber has an excessively worn bush (5.3.2 (c)) | 2 |
| Direction indicators not working |1.5.1c| | 2 |