| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 7 |
| Rear reflector on motorcycle missing |1.4.1| | 6 |
| Registration plate issues | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Indicator switch insecure |1.5.4| | 2 |
| Nearside Rear Direction indicator missing |1.5.1a| | 2 |
| Offside Rear Direction indicator missing |1.5.1a| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Horn is not continous or uniform |1.7.3c| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Nearside Direction indicator not working |1.5.1c| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 2 |
| Front Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Offside Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride Chain clip fitted backwards. |6.2.1h| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Front Upper Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Centre Rear Lower Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Handlebar handgrip missing |2.1.1c| | 1 |
| Offside Handlebar handgrip missing |2.1.1c| | 1 |
| Headlamp damaged and function impaired |1.2.3a| | 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 |
| Rear Footrest missing |6.2.1a| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Front Brake component leaking fluid |3.2.B4| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Horn control not readily accesible. |1.7.2a| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Horn not working |1.7.3a| | 1 |
| Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Brake lever attachment screws missing |3.1.2b| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Nearside Indicator tell tale not functioning |1.5.2| | 1 |
| Offside Indicator tell tale not functioning |1.5.2| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Centre Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Centre Rear Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Nearside Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Centre All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |