| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 18 |
| Headlamp aim out of alignment | 17 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Registration plate issues | 8 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Horn not working |1.7.3a| | 4 |
| Direction indicators not working |1.5.1c| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 3 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 3 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Offside Front Footrest insecure |6.2.1a| | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Drive chain excessively tight |6.2.1d| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Nearside Front Brake hose stretched by suspension movement |3.2.B3b| | 1 |
| Brake hose damaged | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Centre Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Central Front Inner Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Footrest insecure |6.2.1a| | 1 |
| Nearside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front position lamp does not illuminate immediately when switched on (1.1.3a) | 1 |
| Rear Rear wheel bearings have excessive free play (2.4.A.2c) | 1 |
| Brake pedal mounting insecure |3.1.2a| | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Lower Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Centre Rear Rear reflector on sidecar damaged and function impaired |1.4.2a| | 1 |
| Nearside Steering lock stop missing |2.1.3| | 1 |
| Offside Steering lock stop missing |2.1.3| | 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 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| An item not tested |Manual| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Indicator tell tale not operating correctly |1.5.2| | 1 |
| Front Brake pipe excessively damaged |3.2.B2a| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Nearside Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Centre Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Centre Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Centre Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Fuel cap mounting flange/sealing method defective |7.2.2c| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |