| Most common failures | No# failures |
|---|
| Registration plate issues | 16 |
| Rear reflector missing |4.8.2 |a| |ii|| | 9 |
| Rear reflector on motorcycle missing |1.4.1| | 9 |
| Rear reflector missing (4.8.2 (a) (ii)) | 7 |
| Headlamp aim out of alignment | 6 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 5 |
| Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Registration plate lamp issues | 2 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Central Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Drive chain sprocket worn to excess SPROCKET IS LOOSE |6.2.1e| | 1 |
| Offside Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Stop lamp does not illuminate immediately a brake applies front brake light switch |1.3.1a| | 1 |
| Rear Stop lamp not working rear control (4.3.1 (a) (ii)) | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Horn not working |1.7.3a| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort not working |3.3.A1c| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Front Wheel spindle loose (5.2.1 (c) (i)) | 1 |
| Rear Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Fuel pipe leaking excessively or a risk of fire (6.1.3 (b) (ii)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Brake pedal is inoperative |3.1.3c| | 1 |
| Front Wheel fixing missing |multiple fixings| pinch bolts missing |5.2.1 |a| |i|| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls front brake lever (4.3.2 (a) (iii)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Headlamp not working on dipped beam only on left lock (4.1.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Brake pipe union leaking fluid |3.2.B4| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Front Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |