| Most common failures | No# failures |
|---|
| Registration plate issues | 97 |
| Rear reflector on motorcycle missing |1.4.1| | 91 |
| Headlamp aim out of alignment | 69 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 21 |
| Rear reflector missing (4.8.2 (a) (ii)) | 18 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 17 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 13 |
| Registration plate lamp issues | 11 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 10 |
| Front wheel bearings have excessive free play |2.3.5b| | 10 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 8 |
| Drive chain excessively loose |6.2.1d| | 8 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 8 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 6 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 5 |
| Rear reflector missing |4.8.2 |a| |ii|| | 5 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 4 |
| Horn not working |1.7.3a| | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 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 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 4 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 3 |
| Nearside Front Direction indicators not working |1.5.1c| | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Offside Rear Direction indicators not working |1.5.1c| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Offside Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Nearside Front Direction indicator obscured |1.5.1a| | 2 |
| Offside Front Direction indicator obscured |1.5.1a| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Nearside Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 2 |
| Offside Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 2 |
| Rear Drive chain worn to excess |6.2.1e| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Footrest missing (6.2.12 (a)) | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Front Direction indicator missing |1.5.1a| | 2 |
| Rear Direction indicator missing |1.5.1a| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Rear position lamp insecure |1.1.1c| | 2 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Rear reflector on sidecar missing |1.4.1| | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Centre Rear Upper Rear reflector on motorcycle missing |1.4.1| | 2 |