| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 39 |
| Drive chain excessively loose |6.2.1d| | 15 |
| Registration plate issues | 12 |
| Drive chain worn to excess |6.2.1e| | 11 |
| Front wheel bearings are excessively rough |2.3.5b| | 9 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 8 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Rear Footrest missing |6.2.1a| | 5 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Riders seat insecure |6.2.1a| | 4 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Offside Front Footrest insecure |6.2.1a| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Nearside Front Direction indicator not working |1.5.1c| | 4 |
| Rear Drive chain excessively loose |6.2.1d| | 4 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Offside Rear Footrest missing |6.2.1a| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 3 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 3 |
| Fuel system component leaking |7.2.1a| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Fuel cap ineffective (6.1.3 (b) (i)) | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Direction indicator not working |1.5.1c| | 2 |
| An item not tested |Manual| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Rear Drive chain worn to excess |6.2.1e| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Rear Riders seat insecure |6.2.1a| | 2 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Steering lock stop maladjusted |2.1.3| | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Suspension component corroded and seriously weakened (5.3.3 (b) (i)) | 1 |
| Offside Rear Lower Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Outer Front Lower Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Nearside Steering lock stop missing |2.1.3| | 1 |
| Offside Steering lock stop missing |2.1.3| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Brake master cylinder has a seized master cylinder pivot. |3.2.B5| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Front Brake component is severely distorted |3.1.5| | 1 |
| Rear Rear suspension component loose |2.4.A.1a| | 1 |
| Offside Front Upper Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Offside Front Upper Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Centre Upper Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Throttle operating incorrectly sticking open |6.2.1f| | 1 |
| Throttle operating incorrectly revving when turning |6.2.7 |a| |i|| | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Fuel tank insecure (6.1.3 (a) (i)) | 1 |
| Front All direction indicators missing (4.4.1 (a) (ii)) | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition (8.1.1 (a)) | 1 |
| Horn not working |1.7.3a| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Footrest missing |6.2.1a| | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.5.1) | 1 |
| Nearside Front shock absorber seal failed and leaking oil (2.3.3) | 1 |
| Drive chain excessively loose (6.2.1d) | 1 |
| Rear reflector on motorcycle missing (1.4.1) | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars (2.1.2b) | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls (2.1.2b) | 1 |
| Nearside Rear Footrest missing (6.2.1a) | 1 |
| Offside Rear Footrest missing (6.2.1a) | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear mono-shock insecure |2.4.B.4| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Front Brake component leaking fluid |3.2.B4| | 1 |
| Nearside Handlebar mounting clamp bolt missing |2.1.1a| | 1 |
| Offside Handlebar mounting clamp bolt missing |2.1.1a| | 1 |
| Rear Wheel spindle loose |5.2.1 |c| |i|| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.4 |a|| | 1 |
| Rear Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Lower Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Nearside Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Front shock absorber seal failed and leaking oil o/s |2.3.3| | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Front Fairing so located that it is likely to impede the steering |2.1.2e| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Front Direction indicators not working no indicators fitted on front
|1.5.1c| | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Registration plate lamp issues | 1 |
| Front suspension assembly component loose fork brace bolt missing |2.3.1| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Fairing so located that it is likely to impede the steering |2.1.2e| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |