| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 16 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 6 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Headlamp aim not tested |1.6| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Horn not working |1.7.3a| | 2 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Rear suspension component loose |2.4.A.1a| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Nearside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear wheel insecure loose on axle even though nut is tight |4.2.3b| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Centre Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Centre Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Front suspension assembly component excessively bent |2.3.1| | 1 |
| Offside Front Front suspension assembly component excessively bent |2.3.1| | 1 |
| Nearside Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| 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| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Stop lamp does not illuminate immediately a brake applies right hand control |1.3.1a| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Brake disc contaminated FORK OIL (1.1.14 (b)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Headlamp aim not tested NOT WORKING TO TEST (4.1.2 (b)) | 1 |
| Front Brake pipe excessively chafed |3.2.B2a| | 1 |
| Front Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front suspension assembly has excessive free play in the pivot bearings. |2.3.2| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 1 |