| Most common failures | No# failures |
|---|
| Registration plate issues | 21 |
| Rear reflector on motorcycle missing |1.4.1| | 12 |
| Headlamp aim out of alignment | 12 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Direction indicators not working |1.5.1c| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Horn not working |1.7.3a| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Nearside Front Direction indicator incorrect colour |4.4.3 |a|| | 1 |
| Offside Front Direction indicator incorrect colour |4.4.3 |a|| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Rear Seat insecure |6.2.1a| | 1 |
| Front Indicator tell tale not functioning |1.5.2| | 1 |
| Drive belt excessively loose |6.1.7 |c| |i|| | 1 |
| Drive belt worn to excess |6.1.7 |c| |i|| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Stop lamp does not illuminate immediately a brake applies NS |1.3.1a| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on NS |1.1.3a| | 1 |
| Front wheel bearings are excessively rough Rough and Excess Movement |2.3.5b| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Front Handlebar mounting clamp loose |2.1.1a| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Front suspension has a modification which reduces the strength of a load bearing member or its supporting structure. |2.3.8| | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake pedal cannot be released smoothly brake hanging up
brake light staying on |3.1.3d| | 1 |
| Front Clutch lever bent so it cannot be readily operated. |6.2.1g| | 1 |
| Rear Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition baffles missing |7.1.2| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Front Brake lever is inoperative |3.1.3c| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Centre Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Exhaust silencer insecure (8.1.1 (b) (i)) | 1 |
| Nearside Exhaust silencer insecure (8.1.1 (b) (i)) | 1 |
| Rear Exhaust mounting missing |7.1.1c| | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Drive belt worn to excess (6.1.7 (c) (i)) | 1 |
| Drive belt pulley so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |