| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 32 |
| Rear reflector on motorcycle missing |1.4.1| | 30 |
| Drive chain excessively loose |6.2.1d| | 22 |
| Registration plate issues | 13 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 11 |
| Drive chain worn to excess |6.2.1e| | 11 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 10 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 9 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 8 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 8 |
| Fuel system component insecure |7.2.1b| | 8 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 8 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 8 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Steering headbearing has excessive free play |2.2.2| | 7 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 7 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 6 |
| Offside Rear Footrest missing |6.2.1a| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 5 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 5 |
| Horn not working |1.7.3a| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 5 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Rear Drive chain excessively loose |6.2.1d| | 4 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Nearside Rear Footrest missing |6.2.1a| | 4 |
| Front suspension has inadequate damping effect. |2.3.6c| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 3 |
| Offside Rear Direction indicators not working |1.5.1c| | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 3 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 3 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Offside Rear Direction indicator insecure |1.5.3b| | 3 |
| Fuel system component leaking |7.2.1a| | 3 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 3 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 3 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Direction indicator not working |1.5.1c| | 3 |
| Rear Direction indicator not working |1.5.1c| | 3 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 3 |
| Front Brake performance not tested |3.3| | 2 |
| Rear Brake performance not tested |3.3| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Direction indicator not working |1.5.1c| | 2 |
| Footrest missing |6.2.1a| | 2 |
| Rear Drive chain worn to excess |6.2.1e| | 2 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Nearside Drive chain worn to excess |6.2.1e| | 2 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 2 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Offside Steering lock stop ineffective |2.1.3| | 2 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| Nearside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Headlamp switch faulty |1.2.4| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Offside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Nearside Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen headlamp cloudy and dim. not showing on screen |1.6.B.1| | 1 |
| Fuel system component insecure front mounting bolt missing from petrol tank |7.2.1b| | 1 |
| Front Brake hose fouling insecure |3.2.B3b| | 1 |
| Front Front suspension assembly component missing mud guard missing allowing front forks to flex |2.3.1| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Nearside Outer Direction indicators not working |1.5.1c| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Footrest missing Both rear passenger |6.2.1a| | 1 |
| Stop lamp does not illuminate immediately a brake applies Rear brake
|1.3.1a| | 1 |
| Offside Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| All position lamps adversely affected by the operation of the horn |1.1.3b| | 1 |
| Rear position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Front Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Centre Front Upper Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Offside Rear Lower Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear suspension bearing excessively deteriorated |2.4A.2a|i|| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Nearside Rear Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Centre Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Rear Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Centre Rear Lower Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Nearside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front wheel spindle securing nut locking device insecure |2.3.5a| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Headlamp insecure Front fairing mounts broken. |1.2.3b| | 1 |
| Rear suspension bearing has excessive free play Rear lower link bearings |2.4.A2a|i|| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride Rear sprocket carrier security |6.2.1h| | 1 |
| Rear position lamp insecure Rear lamp assembly. |1.1.1c| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Front Upper Direction indicator insecure |1.5.3b| | 1 |
| Outer Rear Lower Rear reflector on motorcycle missing |1.4.1| | 1 |
| Inner Rear Lower Drive chain worn to excess |6.2.1e| | 1 |
| Inner Front Lower Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Outer Rear Lower Rear wheel insecure |4.2.3b| | 1 |
| Inner Front Lower Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Inner Front Lower Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Inner Rear Lower Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Front Lower Handlebar deformed |2.1.1b| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Steering linkage has excessive free play |2.2.2| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Headlamp damaged and function impaired |1.2.3a| | 1 |
| Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| Brake hose damaged | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Rear Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Headlamp aim not tested Dipswich missing unable to test headlamp aim. |4.1.2 |b|| | 1 |
| Nearside Rear Footrest missing |6.2.12 |a|| | 1 |
| Offside Rear Footrest missing |6.2.12 |a|| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Brake component has restricted free movement and operation is likely to be impeded front brake lever is hitting the fairing on full lock |3.2.A1h| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls front brake lever is interfering with the fairing when the
handlebars are turned |2.1.2b| | 1 |
| Front Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Nearside Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Front suspension assembly component excessively bent |2.3.1| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Nearside Front Handlebar deformed |2.1.1b| | 1 |
| Offside Front Handlebar deformed |2.1.1b| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Nearside Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Offside Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Offside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Rear Brake hose fouling |3.2.B3b| | 1 |
| Offside Rear Brake hose excessively twisted |3.2.B3a| | 1 |
| Offside Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Offside Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Brake lever excessively damaged |3.2.A1c| | 1 |
| Front Headlamp switch faulty |1.2.4| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Nearside Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Offside Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Rear Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Rear Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Front Indicator switch insecure |1.5.4| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Front Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Front Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 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 |
| Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Offside Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride retaining clip wrong way round |6.2.1h| | 1 |
| Offside Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Nearside 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 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Front Motorcycle structure joining/attachment plate or fastening insecure left and right fairings loose,and fasteners broken (6.1.1 (b) (i)) | 1 |
| Rear Drive chain so worn it is likely to fail well worn and rusty (6.1.7 (c) (ii)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling out of allignement and rear wheel adjuster broken (2.4 (a)) | 1 |
| Offside Rear Footrest missing footrest missing rear passenger, right hand side (6.2.12 (a)) | 1 |
| Nearside Front Forks excessively corroded badly pitted (2.2.2 (d) (i)) | 1 |
| Offside Forks excessively corroded badly worn and pitted (2.2.2 (d) (i)) | 1 |
| Front Direction indicator likely to become detached both indicators left and right loose?insecure (4.4.1 (c) (ii)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Offside Front Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |