| Most common failures | No# failures |
|---|
| Registration plate issues | 122 |
| Rear reflector on motorcycle missing |1.4.1| | 104 |
| Headlamp aim out of alignment | 38 |
| Registration plate lamp issues | 20 |
| Horn not working |1.7.3a| | 17 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 13 |
| Drive chain excessively loose |6.2.1d| | 13 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| 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| | 9 |
| Rear reflector missing (4.8.2 (a) (ii)) | 9 |
| Rear reflector missing |4.8.2 |a| |ii|| | 7 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 6 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 5 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 5 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 5 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Horn not working (7.7 (a) (ii)) | 4 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 3 |
| Rear reflector on motorcycle missing (1.4.1) | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition |8.1.1 |a|| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 2 |
| Horn control not functioning. |1.7.2b| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Offside Front Brake disc|s| cracked |3.2.A1g| | 2 |
| Nearside Front Brake disc|s| cracked |3.2.A1g| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 2 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Rear All direction indicators obviously incorrectly positioned (4.4.3 (a)) | 2 |
| Rear Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 2 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 2 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Horn not working (7.7 (a)) | 2 |
| Front Wheel excessively distorted (5.2.2 (c) (i)) | 2 |