| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 90 |
| Registration plate issues | 83 |
| Headlamp aim out of alignment | 64 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 18 |
| Registration plate lamp issues | 16 |
| 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| | 11 |
| Drive chain excessively loose |6.2.1d| | 9 |
| Front wheel bearings have excessive free play |2.3.5b| | 8 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 7 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 7 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Offside Rear Direction indicators not working |1.5.1c| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 6 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 5 |
| Front wheel bearings are excessively rough |2.3.5b| | 5 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 5 |
| Rear reflector missing |4.8.2 |a| |ii|| | 5 |
| Horn not working |1.7.3a| | 5 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 5 |
| Rear reflector missing (4.8.2 (a) (ii)) | 5 |
| Nearside Front Direction indicator not working |1.5.1c| | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Offside Rear Direction indicator not working |1.5.1c| | 4 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Offside Front Direction indicator not working |1.5.1c| | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 4 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Nearside Front Footrest insecure |6.2.1a| | 3 |
| Offside Front Footrest insecure |6.2.1a| | 3 |
| Offside Front Direction indicators not working |1.5.1c| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear 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| | 3 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition |8.1.1 |a|| | 3 |
| Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 3 |
| Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 3 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 2 |
| Offside Rear Direction indicator obscured |1.5.1a| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Brake hose damaged | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 2 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Centre Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Centre Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 2 |
| Offside Rear Direction indicator insecure |1.5.3b| | 2 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition (8.1.1 (a)) | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |