| Most common failures | No# failures |
|---|
| Registration plate issues | 145 |
| Rear reflector on motorcycle missing |1.4.1| | 142 |
| Headlamp aim out of alignment | 48 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 17 |
| Rear reflector missing (4.8.2 (a) (ii)) | 16 |
| Registration plate lamp issues | 16 |
| Horn not working |1.7.3a| | 14 |
| Rear reflector missing |4.8.2 |a| |ii|| | 14 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Drive chain excessively loose |6.2.1d| | 10 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 8 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 8 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Drive chain worn to excess |6.2.1e| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 5 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Riders seat insecure |6.2.1a| | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| 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| | 4 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Horn not working (7.7 (a)) | 4 |
| Front Horn not working |1.7.3a| | 4 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 3 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 3 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Nearside Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 2 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 2 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Offside Front Footrest insecure (6.2.12 (a)) | 2 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Nearside Rear Footrest insecure |6.2.1a| | 2 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |