| Most common failures | No# failures |
|---|
| Drive chain worn to excess |6.2.1e| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Registration plate issues | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Rear position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Front Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Steering lock stop missing |2.1.3| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Nearside Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Nearside Rear Drive chain sprocket so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Nearside Front Drive chain sprocket so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| All position lamps not working |4.2.1 |a|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Nearside Front Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Offside Front Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Nearside Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Fuel cap leaking (6.1.3 (b) (i)) | 1 |
| All position lamps not working front and rear (4.2.1 (a)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Front Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Horn not working Missing (7.7 (a) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Suspension arm pin or bush excessively worn Swing arm bearings (5.3.4 (a) (i)) | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Headlamp aim out of alignment | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Brake component is excessively corroded |3.1.5| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Vehicle identification number not legible |6.3.5a| | 1 |