| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 49 |
| Drive chain excessively loose |6.2.1d| | 19 |
| Front wheel bearings are excessively rough |2.3.5b| | 19 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 17 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 16 |
| Registration plate issues | 14 |
| Drive chain worn to excess |6.2.1e| | 12 |
| Front wheel bearings have excessive free play |2.3.5b| | 11 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 10 |
| Riders seat insecure |6.2.1a| | 10 |
| Rear Footrest missing |6.2.1a| | 10 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 8 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 7 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 7 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 6 |
| Offside Rear Footrest missing |6.2.1a| | 6 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 6 |
| Drive chain excessively tight |6.2.1d| | 6 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 6 |
| Rear reflector on motorcycle missing |1.4.1| | 6 |
| Horn not working |1.7.3a| | 6 |
| Nearside Rear Direction indicators not working |1.5.1c| | 5 |
| Nearside Rear Footrest missing |6.2.1a| | 5 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 5 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 5 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 5 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 4 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 4 |
| Nearside Front Direction indicator not working |1.5.1c| | 4 |
| Offside Front Direction indicator not working |1.5.1c| | 4 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 4 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 4 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 4 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 3 |
| Rear Drive chain excessively loose |6.2.1d| | 3 |
| Headlamp incorrect colour |1.2.1| | 3 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Nearside Front Direction indicators not working |1.5.1c| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| 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| | 2 |
| Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 2 |
| Nearside Front Footrest insecure |6.2.1a| | 2 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 2 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear Brake master cylinder fluid level dangerously low |3.2.B1d| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Front Headlamp incorrect colour |1.2.1| | 2 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 2 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Offside Rear Direction indicator insecure |1.5.3b| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Offside Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Rear Brake locking device insecure |3.2.A1e| | 2 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 2 |
| Rear Drive chain worn to excess |6.2.1e| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Offside Front Footrest insecure |6.2.1a| | 2 |
| Offside Handlebar deformed |2.1.1b| | 2 |
| Direction indicator missing |1.5.1a| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Drive chain fouling another component |6.2.1d| | 2 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Steering operation impeded by a fairing |2.1.4 |e|| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Handlebar handgrip missing |2.1.1c| | 1 |
| Offside Handlebar handgrip missing |2.1.1c| | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Offside Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Offside Front Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Nearside Front Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Front Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Lower Drive chain excessively loose |6.2.1d| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Rear Brake hose excessively kinked |3.2.B3a| | 1 |
| Front Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Front Brake locking device insecure |3.2.A1e| | 1 |
| Nearside Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Throttle operating incorrectly revs up on right turn (6.2.7 (a) (i)) | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Offside Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front Headlamp aim beam image too far to the right |1.6.4| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear Brake performance not tested |3.3| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Rear Rear wheel spindle loose |2.4.A.2b| | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Offside Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Offside Front Footrest missing |6.2.1a| | 1 |
| Nearside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Rear Chain guard insecure |6.2.1c| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Stop lamp not working Brake lamp does not illuminate when control 1 is used (brake lever). (4.3.1 (a) (ii)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Centre Front Front position lamp missing |1.1.1a| | 1 |
| Nearside Outer Front Upper Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| Centre Rear Upper All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Upper Direction indicators not working |1.5.1c| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Brake hose excessively twisted |3.2.B3a| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Centre Front Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Front Stop lamp switch with a delay in operation |4.3.2 |a| |ii|| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Exhaust mounting missing |7.1.1c| | 1 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Front Indicator switch insecure |1.5.4| | 1 |
| Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear Seat insecure |6.2.1a| | 1 |
| Nearside Rear Fuel tank leaking |7.2.1a| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Nearside Indicator switch insecure |1.5.4| | 1 |
| Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| Front Brake pipe union leaking fluid |3.2.B4| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear suspension component excessively bent |2.4.A.1a| | 1 |
| Rear suspension component cracked |2.4.A.1a| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Handlebar mounting clamp bolt missing |2.1.1a| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Front Direction indicator obscured |1.5.1a| | 1 |
| Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Registration plate lamp issues | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Nearside Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Offside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake pedal is bent and the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Rear Brake pipe union leaking fluid |3.2.B4| | 1 |
| Fuel pipe leaking at fuel filter |7.2.1a| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |
| Front Brake lever attachment screws loose |3.1.2b| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Shock absorber likely to become detached (5.3.2 (a) (ii)) | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| An item not tested |Manual| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Footrest missing |6.2.1a| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front Brake component has an inadequate repair |3.1.5| | 1 |
| Rear Brake hose fouling |3.2.B3b| | 1 |
| Front Fairing insecure and likely to impede the steering |2.1.2e| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Front Brake component is excessively corroded |3.1.5| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |