| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 379 |
| Registration plate issues | 60 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 43 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 34 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 24 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Stop lamp remains on when the brakes are released | 11 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 9 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 9 |
| Throttle operating incorrectly |6.2.1f| | 8 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| Stop lamp remains on when the brake is released |1.3.1e| | 8 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Front wheel bearings are excessively rough |2.3.5b| | 7 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 7 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 7 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 7 |
| Horn not working |1.7.3a| | 6 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 6 |
| Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 5 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 5 |
| Horn not working (7.7 (a) (ii)) | 5 |
| Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Nearside Rear Direction indicator not working |1.5.1c| | 4 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 4 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 4 |
| Registration plate lamp issues | 4 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 3 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 3 |
| Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 3 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 3 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 3 |
| Brake performance not tested |3.3| | 3 |
| 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| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 3 |
| Rear Brake excessively binding (1.2.1 (f)) | 3 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 3 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Horn not working (7.7 (a)) | 3 |