| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 10 |
| Drive chain excessively loose |6.2.1d| | 5 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Registration plate issues | 3 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Front Upper Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Brake pipe union leaking fluid |3.2.B4| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Rear Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Rear Floor brake test indicates a severely juddering brake |3.3C2d.| | 1 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition needs silencer |7.1.2| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Front Lower Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Stop lamp not working not working when rear brake is applied |4.3.1 |a| |ii|| | 1 |
| Offside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Horn not working |1.7.3a| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Horn not working (1.7.3a) | 1 |
| Front Brake fluid significantly below minimum mark (1.1.10 (d) (ii)) | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Front Brake component is fractured |3.1.5| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Wheel spoke missing |4.2.1b| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Offside Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Front Footrest missing (6.2.1a) | 1 |
| Drive chain excessively loose (6.2.1d) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Front Wheel fixing missing (multiple fixings) (5.2.1 (a) (i)) | 1 |
| Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Rear Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |