| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 13 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 7 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Registration plate issues | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Horn not working |1.7.3a| | 3 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 3 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Horn not working |1.7.3a| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected |6.2.7 |a| |ii|| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Rear Wheel spoke cracked. |4.2.1b| | 1 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Nearside Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Direction indicators not working all indicators |1.5.1c| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Brake fluid reservoir insecurely mounted |3.2.B1a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Footrest insecure |6.2.1a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Indicator tell tale not operating correctly |1.5.2| | 1 |
| Upper Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Lower Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Wheel damaged significantly reducing the original strength |4.2.1a| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Brake component leaking fluid Front caliper bleed nipple |3.2.B4| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Handlebar so insecure it is likely to become detached Bolt loose (2.2.1 (b) (ii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Headlamp aim beam image kick-up is to the offside (1.6.1) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |