| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 130 |
| Registration plate issues | 84 |
| Rear reflector on motorcycle missing |1.4.1| | 63 |
| Rear reflector missing (4.8.2 (a) (ii)) | 60 |
| Registration plate lamp issues | 48 |
| Rear reflector missing |4.8.2 |a| |ii|| | 25 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 13 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 13 |
| Horn not working (7.7 (a) (ii)) | 10 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 9 |
| Horn not working |1.7.3a| | 9 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 9 |
| Horn not working (7.7 (a)) | 9 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Horn not working |7.7 |a| |ii|| | 8 |
| Drive chain excessively loose |6.2.1d| | 8 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 8 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 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 |
| 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| | 6 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 6 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 6 |
| Direction indicators not working |1.5.1c| | 5 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 5 |
| Stop lamp remains on when the brakes are released | 5 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 5 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 5 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 5 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Nearside Front Direction indicators not working |1.5.1c| | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Headlamp aim not tested |4.1.2 |b|| | 4 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 4 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 4 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 4 |
| 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)) | 4 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 4 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 4 |
| Offside Rear Direction indicators not working |1.5.1c| | 3 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 3 |
| Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 3 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 3 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 3 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 3 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 3 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Riders seat insecure (6.2.5 (a) (ii)) | 3 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 3 |