| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 58 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 35 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 27 |
| Rear reflector on motorcycle missing |1.4.1| | 25 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 24 |
| Steering headbearing has excessive free play |2.2.2| | 21 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 16 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 16 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 14 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 13 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 11 |
| Nearside Front Direction indicator not working |1.5.1c| | 9 |
| Headlamp insecure |1.2.3b| | 8 |
| Direction indicators not working |1.5.1c| | 8 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 8 |
| Rear reflector on motorcycle obscured |1.4.1| | 8 |
| Exhaust excessively deteriorated |7.1.1a| | 7 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Registration plate issues | 7 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 7 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 6 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 5 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 4 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 4 |
| Nearside Rear Direction indicators not working |1.5.1c| | 4 |
| Nearside Rear Direction indicator not working |1.5.1c| | 4 |
| Headlamp aim not tested |1.6| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 4 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 3 |
| Front Direction indicator not working |1.5.1c| | 3 |
| Offside Rear Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Nearside Front Direction indicators not working |1.5.1c| | 3 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 3 |
| Rear Direction indicator not working |1.5.1c| | 3 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 3 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Front Steering headbearing has excessive free play |2.2.2| | 3 |
| Handlebar deformed |2.1.1b| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Exhaust is leaking and excessively noisey (7.1.1b) | 3 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Indicator tell tale not functioning |1.5.2| | 2 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Exhaust mounting missing |7.1.1c| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 2 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Horn not working |1.7.3a| | 2 |
| Rear Brake lever insecure |3.1.2a| | 2 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front Handlebar deformed |2.1.1b| | 2 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 2 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Headlamp switch faulty |1.2.4| | 2 |
| Direction indicator not working |1.5.1c| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Brake lever is inoperative |3.1.3c| | 2 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Riders seat insecure (6.2.5 (a) (ii)) | 2 |
| Rear Brake lever has inadequate reserve travel (3.1.3b) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Registration plate lamp issues | 2 |