| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 28 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 16 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Registration plate issues | 15 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 7 |
| Front wheel bearings are excessively rough |2.3.5b| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Drive chain excessively loose |6.2.1d| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 6 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Offside Front Direction indicator not working |1.5.1c| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| 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| | 2 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Offside Steering lock stop ineffective |2.1.3| | 2 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Registration plate lamp issues | 2 |
| Nearside Front Direction indicator insecure |1.5.3b| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Rear Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Offside Front Handlebar fouling on the fuel tank or bodywork on full lock fouling brake |2.1.4 |b|| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls does not work when rear brake applied (4.3.2 (a) (iii)) | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Nearside Indicator tell tale not functioning |1.5.2| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Stop lamp not working Foot switch sticking requires cleaning or replacing (4.3.1 (a) (ii)) | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front wheel bearings are excessively tight |2.3.5b| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Central Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Central Front Horn not working (7.7 (a)) | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Fuel tank insecure (6.1.3 (a) (i)) | 1 |
| Centre Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Lower Rear suspension component cracked |2.4.A.1a| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Nearside Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Rear wheel has a loose wheel bolt|s| |4.2.3a| | 1 |
| Nearside Front Floor brake test indicates a severely juddering brake |3.3C2d.| | 1 |
| Offside Front Floor brake test indicates a severely juddering brake |3.3C2d.| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Horn not working |1.7.3a| | 1 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |