| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 48 |
| Headlamp aim beam image kick up to the offside |1.6| | 21 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 16 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 13 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 12 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Registration plate issues | 8 |
| Front wheel bearings have excessive free play |2.3.5b| | 8 |
| Front wheel bearings are excessively rough |2.3.5b| | 8 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 7 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 7 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 7 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Drive chain worn to excess |6.2.1e| | 6 |
| Horn not working |1.7.3a| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 5 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 5 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 5 |
| Headlamp insecure |1.2.3b| | 4 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Fuel system component insecure |7.2.1b| | 4 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Nearside Rear Direction indicator not working |1.5.1c| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 4 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Front Direction indicator not working |1.5.1c| | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Front Steering headbearing has excessive free play |2.2.2| | 3 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Brake hose damaged | 3 |
| Offside Rear Footrest missing |6.2.1a| | 3 |
| Seat insecure |6.2.1a| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 3 |
| Rear Drive chain excessively loose |6.2.1d| | 3 |
| Offside Front Direction indicator not working |1.5.1c| | 3 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 3 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 3 |
| Front Headlamp insecure |1.2.3b| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Offside Front Handlebar mounting clamp loose |2.1.1a| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Offside Front Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Brake linkage has abnormal movement due to excessive wear |3.2.A1i| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Front Fuel system component insecure |7.2.1b| | 2 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Drive chain fouling another component |6.2.1d| | 2 |
| Offside Front Footrest insecure |6.2.1a| | 2 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 2 |
| Rear Seat insecure |6.2.1a| | 2 |
| Front Brake hose fouling |3.2.B3b| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Upper Direction indicators not working |1.5.1c| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Upper Fairings insecure and likely to impede the steering fairing |2.1.2e| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Brake disc|s| securing bolt|s| loose |3.2.A1g| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Centre Front Headlamp missing |1.2.3a| | 1 |
| Centre Front Upper Fuel system component insecure |7.2.1b| | 1 |
| Centre Rear Upper Stop lamp insecure |1.3.3b| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Offside Handlebar handgrip missing |2.1.1c| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Offside Rear Rear suspension component loose |2.4.A.1a| | 1 |
| Offside Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 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 |
| Upper All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Position lamp switch insecure |1.1.4b| | 1 |
| Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Headlamp switch insecure |1.2.4| | 1 |
| Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear Leg shield insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Front Indicator switch insecure |1.5.4| | 1 |
| Rear 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 |
| Nearside Indicator switch insecure |1.5.4| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Rear wheel spindle loose |2.4.A.2b| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Front Brake pipe excessively chafed |3.2.B2a| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Centre Front Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear Brake component is excessively corroded |3.1.5| | 1 |
| Front Exhaust excessively deteriorated |7.1.1a| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Braking system does not have an approriate system/s fitted according to its age |3.1.1| | 1 |
| Front Horn control defective |1.7.2a| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Headlamp switch insecure |1.2.4| | 1 |
| Suspension arm ball joint excessively worn Rear shock absorber lower bush and linkage |5.3.4 |a| |i|| | 1 |
| Rear suspension bush has excessive free play swing arm play |2.4.A2a|i|| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| An item not tested |Manual| | 1 |
| Nearside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| 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 |
| Front Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Rear Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Outer Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Offside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Brake lever excessively damaged |3.2.A1c| | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Front Brake fluid reservoir insecurely mounted |3.2.B1a| | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Offside Footrest missing |6.2.1a| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Offside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Position lamp switch faulty |1.1.4a| | 1 |
| Front Brake locking device missing |3.2.A1e| | 1 |
| Rear Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Front Brake pedal mounting cracked . |3.1.2c| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Rear Brake lever has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Fuel tank insecure (6.1.3 (a) (i)) | 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 |
| Nearside Front Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Nearside Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Offside Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |