| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 385 |
| Registration plate issues | 75 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 69 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 53 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 49 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 46 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 45 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 44 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 38 |
| Headlamp aim beam image kick up to the offside |1.6| | 34 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 34 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 33 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 31 |
| Horn not working |1.7.3a| | 27 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 27 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 23 |
| Registration plate lamp issues | 21 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 19 |
| Rear reflector on motorcycle missing |1.4.1| | 19 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 19 |
| Stop lamp remains on when the brake is released |1.3.1e| | 19 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 15 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 15 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 15 |
| Stop lamp remains on when the brakes are released | 14 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 14 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 11 |
| Offside Front Direction indicator not working |1.5.1c| | 10 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 10 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 9 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Throttle operating incorrectly |6.2.1f| | 9 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 9 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 9 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 8 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 8 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 8 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 8 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 8 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Nearside Front Direction indicator not working |1.5.1c| | 8 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 8 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 7 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| 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 |
| Front Position lamp not working (4.2.1 (a)) | 7 |
| Horn not working (7.7 (a) (ii)) | 7 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 6 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 6 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 6 |
| Nearside Rear Direction indicator not working |1.5.1c| | 6 |
| Offside Rear Direction indicator not working |1.5.1c| | 6 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 6 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 6 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 6 |
| Front Brake excessively binding (1.2.1 (f)) | 6 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 6 |