| Most common failures | No# failures |
|---|
| Registration plate issues | 82 |
| Rear reflector on motorcycle missing |1.4.1| | 70 |
| Headlamp aim out of alignment | 41 |
| Rear reflector missing (4.8.2 (a) (ii)) | 24 |
| Registration plate lamp issues | 23 |
| Rear reflector missing |4.8.2 |a| |ii|| | 14 |
| 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 Rear reflector missing (4.8.2 (a) (ii)) | 9 |
| 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|| | 8 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 8 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 6 |
| 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 |
| Drive chain excessively loose |6.2.1d| | 5 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 5 |
| Horn not working |1.7.3a| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 5 |
| Horn not working (7.7 (a)) | 4 |
| Stop lamp remains on when the brakes are released | 4 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 4 |
| Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 3 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 2 |
| Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Riders seat insecure (6.2.5 (a) (ii)) | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 2 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 2 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 2 |