| Most common failures | No# failures |
|---|
| Registration plate issues | 48 |
| Headlamp aim out of alignment | 41 |
| Rear reflector on motorcycle missing |1.4.1| | 24 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 12 |
| Registration plate lamp issues | 11 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 10 |
| Front wheel bearings have excessive free play |2.3.5b| | 9 |
| Front wheel bearings are excessively rough |2.3.5b| | 9 |
| Drive chain excessively loose |6.2.1d| | 9 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Horn not working |1.7.3a| | 7 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 6 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 6 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 6 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 5 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Horn not working (7.7 (a)) | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 4 |
| Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Stop lamp emits other than a steady red light |1.3.1b| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear reflector missing |4.8.2 |a| |ii|| | 3 |
| Rear Drive chain excessively tight |6.2.1d| | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear position lamp incorrect colour |1.1.2b| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Offside Front Brake hose leaking (1.1.12 (c)) | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Headlamp light source and lamp not compatible (4.1.4 (c)) | 2 |
| Rear All direction indicators obviously incorrectly positioned (4.4.3 (a)) | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 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 |
| Central Front Brake excessively binding (1.2.1 (f)) | 2 |
| Offside Front Brake lever has insufficient reserve travel do not drive motorcycle (1.1.2 (a)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Central Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Exhaust is leaking and excessively noisey EGR pipes corroded & leaking |7.1.1b| | 2 |
| Offside Exhaust is leaking and excessively noisey offside mid pipe leaking |7.1.1b| | 2 |