| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 10 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 7 |
| Registration plate issues | 6 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Horn not working |1.7.3a| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 5 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Offside Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Steering operation impeded by a fairing (2.1.4 (e)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Front Brake performance not tested (1.2.1 (g)) | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Motorcycle structure adversely modified |6.1.1b| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Nearside Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Rear Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Offside Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Indicator switch insecure |1.5.4| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Nearside Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Upper Suspension arm attachment bracket/mounting insecure (5.3.3 (a) (i)) | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Brake disc|s| securing bolt|s| loose |3.2.A1g| | 1 |
| Rear Locking devices 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 main beam |1.2.2a|ii|| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Nearside Front Shock absorber has a serious fluid leak Fork seals leaking |5.3.2 |b|| | 1 |
| Offside Front Shock absorber has a serious fluid leak Fork seals leaking |5.3.2 |b|| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 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 |
| Horn control not readily accesible. |1.7.2a| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Brake pedal is inoperative |3.1.3c| | 1 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Brake lever attachment screws loose |3.1.2b| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Nearside Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |