| Most common failures | No# failures |
|---|
| Registration plate issues | 163 |
| Rear reflector on motorcycle missing |1.4.1| | 160 |
| Headlamp aim out of alignment | 80 |
| Registration plate lamp issues | 48 |
| Rear reflector missing |4.8.2 |a| |ii|| | 33 |
| Rear reflector missing (4.8.2 (a) (ii)) | 30 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 23 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 19 |
| Horn not working |1.7.3a| | 17 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Horn not working (7.7 (a) (ii)) | 12 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 10 |
| Horn not working |7.7 |a| |ii|| | 10 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 9 |
| 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| | 8 |
| 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|| | 7 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 6 |
| Drive chain excessively loose |6.2.1d| | 6 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 5 |
| 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)) | 5 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 5 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 4 |
| Front Brake excessively binding (1.2.1 (f)) | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Horn not working (7.7 (a)) | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 4 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 4 |
| Nearside Front Direction indicators not working |1.5.1c| | 3 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 3 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 3 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 3 |
| Riders seat insecure |6.2.5 |a| |ii|| | 3 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 3 |
| Front Horn not working |1.7.3a| | 3 |