| Most common failures | No# failures |
|---|
| Registration plate issues | 86 |
| Headlamp aim out of alignment | 56 |
| Rear reflector on motorcycle missing |1.4.1| | 50 |
| Rear reflector missing (4.8.2 (a) (ii)) | 39 |
| Rear reflector missing |4.8.2 |a| |ii|| | 22 |
| Registration plate lamp issues | 20 |
| Horn not working (7.7 (a) (ii)) | 13 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 9 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 9 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 9 |
| Horn not working |1.7.3a| | 8 |
| 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| | 7 |
| Horn not working |7.7 |a| |ii|| | 7 |
| Horn not working (7.7 (a)) | 7 |
| 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|| | 6 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 6 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Riders seat insecure |6.2.5 |a| |ii|| | 4 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 3 |
| Nearside Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 3 |
| Front Horn not working (7.7 (a) (ii)) | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Rear All direction indicators obviously incorrectly positioned (4.4.3 (a)) | 3 |
| 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)) | 3 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 3 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Rear Direction indicator obviously incorrectly positioned |4.4.3 |a|| | 2 |
| Front Horn control not functioning. |1.7.2b| | 2 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 2 |
| Central Rear reflector on motorcycle missing |1.4.1| | 2 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 2 |
| Central Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Offside Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Horn control not functioning. |1.7.2b| | 2 |
| Stop lamp not working control 2 rear brake |4.3.1 |a| |ii|| | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Horn control defective |1.7.2a| | 2 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 2 |
| Riders seat insecure (6.2.5 (a) (ii)) | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 2 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |