| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 62 |
| Rear reflector on motorcycle missing |1.4.1| | 38 |
| Registration plate issues | 22 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 14 |
| Horn not working |1.7.3a| | 10 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 9 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 9 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 9 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Rear Brake disc|s| cracked |3.2.A1g| | 6 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| 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| | 5 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Registration plate lamp issues | 3 |
| Offside Front Direction indicators not working |1.5.1c| | 3 |
| Rear reflector missing |4.8.2 |a| |ii|| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Offside Front Direction indicator not working |1.5.1c| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Headlamp switch faulty |1.2.4| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 3 |
| Rear Direction indicator not working |1.5.1c| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Front Brake fluid reservoir insecurely mounted |3.2.B1a| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Front Direction indicators not working |1.5.1c| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Nearside Footrest insecure |6.2.1a| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Nearside Handlebar mounting clamp bolt missing |2.1.1a| | 2 |
| 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| | 2 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Fuel system component leaking |6.1.3 |b| |i|| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Exhaust silencer insecure |8.1.1 |b| |i|| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Offside Rear Motorcycle structure cracked Frame cracked near to foot peg hanger |6.1.1a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Exhaust markings indicating not for road use or similar wording (6.1.2 (c)) | 1 |
| Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Centre Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Position lamp switch does not operate in accordance with the requirements (4.2.2 (a)) | 1 |
| Front Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Front Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Front Brake fluid contaminated |1.8 |a|| | 1 |
| Rear Brake fluid contaminated |1.8 |a|| | 1 |
| Position lamp switch does not illuminate all position lamps with a single operation |4.2.2 |a|| | 1 |
| Centre Front Upper Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition both rear baffles needed fitting at station (8.1.1 (a)) | 1 |
| Rear suspension component loose swing arm nut |2.4.A.1a| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Headlamp incorrect colour |4.1.4 |a|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Nearside Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Position lamp switch faulty |1.1.4a| | 1 |
| Motorcycle structure cracked |6.1.1a| | 1 |
| Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Nearside Front Shock absorber has a serious fluid leak fork seal (5.3.2 (b)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Front Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Rear Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Front Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear brake binding | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Pillion seat insecure (6.2.6 (a) (ii)) | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Position lamp not working side light |4.2.1 |a|| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Central Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Front Brake hose stretched by suspension movement |3.2.B3b| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Rear position lamp flickers when tapped lightly by hand |1.1.3c| | 1 |
| Stop lamp not working from front brake lever. |4.3.1 |a| |ii|| | 1 |
| Rear Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Nearside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Rear Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Rear Stop lamp not working rear stop switch not working (4.3.1 (a) (ii)) | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Steering linkage locking device missing Front |2.1.3 |d|| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Footrest missing |6.2.1a| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Offside Front Upper Throttle operating incorrectly |6.2.1f| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Front Position lamp not working both |4.2.1 |a|| | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Horn missing |1.7.1| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Front Upper Brake caliper|s| insecure |3.2.A1j| | 1 |
| Front Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| Offside Handlebar mounting clamp bolt missing |2.1.1a| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Nearside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Centre Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Centre Rear Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Centre Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Fork yoke deformed |2.1.1b| | 1 |
| Front Direction indicator obscured |1.5.1a| | 1 |
| Offside Rear Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Nearside Exhaust excessively deteriorated |7.1.1a| | 1 |
| Offside Exhaust excessively deteriorated |7.1.1a| | 1 |
| Offside Front Brake component insecure pad retaining pin (1.1.21 (c)) | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Offside Handlebar deformed to the extent that steering is affected |2.2.1 |c| |ii|| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Brake component damaged and seriously reduced in strength |3.2.A1| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Central Front Horn not working (7.7 (a) (ii)) | 1 |
| Nearside Front Headlamp light source and lamp not compatible (4.1.4 (c)) | 1 |
| Offside Front Headlamp light source and lamp not compatible (4.1.4 (c)) | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Lower Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Offside Front Lower Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Lower Brake locking device missing |3.2.A1e| | 1 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear Brake pedal attachment screws loose |3.1.2b| | 1 |
| Brake hose fouling |3.2.B3b| | 1 |
| Front Plate brake test indicates a sticking brake |3.3.B1a| | 1 |
| Nearside Front Lower Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Lower Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Fuel tank insecure |6.1.3 |a| |i|| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Nearside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Brake hose excessively deteriorated | 1 |
| Centre Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Brake lever cracked |3.1.2c| | 1 |
| Nearside Indicator tell tale not functioning |1.5.2| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Brake lever has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Offside Exhaust has part of the system missing |7.1.1a| | 1 |
| Nearside Exhaust has part of the system missing |7.1.1a| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Nearside Drive chain excessively tight |6.2.1d| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Shock absorber has a serious fluid leak both fork seals leaking |5.3.2 |b|| | 1 |
| Offside Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Chain guard insecure |6.2.1c| | 1 |