| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 52 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 19 |
| Drive chain excessively loose |6.2.1d| | 18 |
| Front wheel bearings have excessive free play |2.3.5b| | 17 |
| Front wheel bearings are excessively rough |2.3.5b| | 16 |
| Headlamp aim beam image kick up to the offside |1.6| | 15 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Rear reflector on motorcycle missing |1.4.1| | 11 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 9 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 9 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 9 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 8 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 8 |
| Registration plate issues | 8 |
| Drive chain worn to excess |6.2.1e| | 8 |
| Offside Rear Footrest missing |6.2.1a| | 8 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 7 |
| Rear Footrest missing |6.2.1a| | 7 |
| Steering headbearing has excessive free play |2.2.2| | 7 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 6 |
| Horn not working |1.7.3a| | 6 |
| Riders seat insecure |6.2.1a| | 6 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 6 |
| Fuel system component insecure |7.2.1b| | 6 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 5 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 5 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 4 |
| Offside Rear Direction indicator not working |1.5.1c| | 4 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 4 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 4 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Offside Rear Direction indicators not working |1.5.1c| | 4 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Nearside Front Direction indicator insecure |1.5.3b| | 4 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Nearside Rear Direction indicator not working |1.5.1c| | 4 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 4 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Headlamp aim not tested |1.6| | 3 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 3 |
| Rear Drive chain worn to excess |6.2.1e| | 3 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 3 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 3 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 3 |
| Offside Front Direction indicator not working |1.5.1c| | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Brake hose damaged | 3 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Offside Front Direction indicators not working |1.5.1c| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Indicator switch insecure |1.5.4| | 3 |
| Fuel pipe leaking |7.2.1a| | 2 |
| Offside Rear Footrest insecure |6.2.1a| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Offside Steering lock stop ineffective |2.1.3| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Drive chain fouling another component |6.2.1d| | 2 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Offside Handlebar mounting clamp loose |2.1.1a| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Front Brake component worn and seriously reduced in strength |3.2.A1| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Nearside Footrest insecure |6.2.1a| | 2 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Nearside Front Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Footrest missing |6.2.1a| | 2 |
| Offside Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Nearside Indicator switch insecure |1.5.4| | 2 |
| Offside Footrest missing |6.2.1a| | 2 |
| Rear suspension component loose |2.4.A.1a| | 2 |
| Front Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 2 |
| Offside Direction indicators not working |1.5.1c| | 2 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Drive chain excessively loose |6.2.1d| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Nearside Handlebar mounting clamp loose |2.1.1a| | 2 |
| Seat insecure |6.2.1a| | 2 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 2 |
| Offside Rear Drive chain excessively loose |6.2.1d| | 2 |
| Front suspension assembly component missing |2.3.1| | 2 |
| Handlebar mounting clamp loose |2.1.1a| | 2 |
| 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| | 2 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 2 |
| Front Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Centre Exhaust mounting missing |7.1.1c| | 1 |
| Motorcycle structure cracked |6.1.1a| | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Rear Lower Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Centre Rear Lower Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Centre Rear Lower Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Centre Rear Lower Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear Lower Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Brake pedal is positioned so that the brake cannot be readily applied |1.1.2 |d|| | 1 |
| Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Motorcycle structure cracked |6.1.1a| | 1 |
| Front Brake hose stretched by steering movement |3.2.B3b| | 1 |
| Rear Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Nearside Front Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Nearside Front Indicator switch insecure |1.5.4| | 1 |
| Offside Front Indicator switch insecure |1.5.4| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Position lamp switch insecure |1.1.4b| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Seat insecure |6.2.1a| | 1 |
| Front Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Front Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Offside Rear Drive chain excessively tight |6.2.1d| | 1 |
| Offside Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Front Brake hose fouling |3.2.B3b| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Offside Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Rear suspension bearing excessively deteriorated |2.4A.2a|i|| | 1 |
| Front Brake disc|s| securing bolt|s| loose |3.2.A1g| | 1 |
| Nearside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Centre Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| All position lamps not working |4.2.1 |a|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Front Riders seat insecure |6.2.1a| | 1 |
| Nearside Drive chain fouling another component |6.2.1d| | 1 |
| Offside Handlebar mounting excessively deteriorated |flexible type| |2.1.1d| | 1 |
| Centre Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Centre Rear Lower Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Rear Rear suspension component loose |2.4.A.1a| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Nearside Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Offside Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Headlamp aim beam image kick up to the offside restricted beam with tape |1.6| | 1 |
| Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Steering linkage has excessive free play |2.2.2| | 1 |
| Front Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Nearside Handlebar mounting excessively deteriorated |flexible type| |2.1.1d| | 1 |
| Registration plate lamp issues | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear mono-shock insecure |2.4.B.4| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Rear Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Nearside Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen right handed kick up and not to the left |4.1.2 |a|| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Front Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Rear Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Throttle operating incorrectly sticking |6.2.1f| | 1 |
| Brake lever cannot be released smoothly fouling throttle cable
|3.1.3d| | 1 |
| Rear mono-shock pivot excessively worn lower pivot |2.4.B.4| | 1 |
| Offside Steering lock stop loose switch gear
|2.1.3| | 1 |
| Direction indicator flashing more than 120 times per minute all |1.5.1c| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Nearside Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Nearside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Rear Rear wheel spindle loose |2.4.A.2b| | 1 |
| Offside Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Front position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Front Brake pipe excessively chafed |3.2.B2a| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Nearside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Offside Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Brake performance not tested |3.3| | 1 |
| Front Headlamp aim not tested |1.6| | 1 |
| An item not tested |Manual| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Offside Front Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Offside Direction indicator insecure |1.5.3b| | 1 |
| Nearside Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Offside Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Nearside Front Position lamp switch insecure |1.1.4b| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Offside Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Offside Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Offside Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Front Handlebar mounting clamp loose |2.1.1a| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Horn is not continous or uniform |1.7.3c| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Offside Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Upper Fuel system component insecure |7.2.1b| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Brake pedal attachment screws loose |3.1.2b| | 1 |
| Front Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake locking device missing |3.2.A1e| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Offside Rear Upper Direction indicators not working |1.5.1c| | 1 |
| Offside Front Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Rear Upper Footrest missing |6.2.1a| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Footrest missing |6.2.1a| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Central Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Central Front Lower Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Central Front Upper Engine mounting/bracket missing (6.1.8 (a) (ii)) | 1 |
| Nearside Front Upper Engine mounting/bracket bracket excessively loose (6.1.8 (a) (ii)) | 1 |
| Central Front Lower Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |