| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 68 |
| Rear reflector on motorcycle missing |1.4.1| | 28 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 26 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 20 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Drive chain excessively loose |6.2.1d| | 13 |
| Registration plate issues | 10 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 10 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 9 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 7 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 7 |
| Drive chain worn to excess |6.2.1e| | 7 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 6 |
| Nearside Rear Direction indicators not working |1.5.1c| | 6 |
| Throttle operating incorrectly |6.2.1f| | 6 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 6 |
| Front Wheel spoke excessively loose |4.2.1b| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Rear reflector missing (4.8.2 (a) (ii)) | 5 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Handlebar deformed |2.1.1b| | 4 |
| Headlamp insecure |1.2.3b| | 4 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 4 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 4 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 4 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 4 |
| Offside Rear Direction indicator not working |1.5.1c| | 4 |
| Registration plate lamp issues | 4 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Direction indicators not working |1.5.1c| | 3 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 3 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Direction indicators not working |1.5.1c| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Offside Front Footrest insecure |6.2.1a| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Drive chain worn to excess |6.2.1e| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 2 |
| Indicator switch insecure |1.5.4| | 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 Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Plate brake test indicates a binding brake rear |3.3.B1a| | 2 |
| Rear Position lamp not working |4.2.1 |a|| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Direction indicator not working |1.5.1c| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Headlamp insecure |4.1.1 |c|| | 2 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 2 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 2 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 2 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Offside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 2 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Footrest missing R & L rear. |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Rear suspension bearing has excessive free play rear swing arm bushes |2.4.A2a|i|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Drive chain horseshoe locking device incorrectly fitted |6.1.7 |j| |i|| | 1 |
| Rear Footrest missing |6.2.12 |a|| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Decelerometer brake test indicates a sticking brake |3.3.E1d| | 1 |
| Rear Footrest insecure |6.2.1a| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Stop lamp does not illuminate immediately a brake applies rear application. |1.3.1a| | 1 |
| Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Decelerometer brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Front Front shock absorber seal failed and leaking oil both fork seals excess leaking . contaminated front pads |2.3.3| | 1 |
| Throttle operating incorrectly throttle excess stiff and seizing up on cable? |6.2.1f| | 1 |
| Nearside Indicator switch defective |1.5.4| | 1 |
| Central Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 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 |
| Offside Outer Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Centre Exhaust mounting missing |7.1.1c| | 1 |
| An item not tested |Manual| | 1 |
| Rear Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Stop lamp not working BOTH |4.3.1 |a| |ii|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Offside Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Exhaust is leaking and excessively noisey front pipe |7.1.1b| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Offside Front Throttle operating incorrectly |6.2.1f| | 1 |
| Offside Front Handlebar deformed |2.1.1b| | 1 |
| Centre Front Lower Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Front position lamp insecure |1.1.1c| | 1 |
| Rear suspension bush has excessive free play lower mono shock |2.4.A2a|i|| | 1 |
| Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition |8.1.1 |a|| | 1 |
| Nearside Rear Footrest missing |6.2.12 |a|| | 1 |
| Offside Rear Footrest missing |6.2.12 |a|| | 1 |
| Front Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Stop lamp switch with a delay in operation Control 2 |4.3.2 |a| |ii|| | 1 |
| Rear Shock absorber has an excessively worn bush |5.3.2 |c|| | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Rear Suspension arm fractured Swinging arm |5.3.3 |b| |ii|| | 1 |
| Rear position lamp missing |1.1.1a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies Does not work on control 2 |foot brake| |1.3.1a| | 1 |
| Nearside Footrest missing |6.2.1a| | 1 |
| Offside Footrest missing |6.2.1a| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Exhaust mounting missing |7.1.1c| | 1 |
| Offside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Rear Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Rear Stop lamp not working On Either Brake |4.3.1 |a| |ii|| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling Rear wheel adjusted incorrectly |2.4 |a|| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Direction indicator missing all |1.5.1a| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Offside Rear Direction indicator likely to become detached |4.4.1 |c| |ii|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Front Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Front Stop lamp not working front brake light switch not working |4.3.1 |a| |ii|| | 1 |
| Rear Rear mono-shock pivot excessively worn where mono-shock connets too arm |2.4.B.4| | 1 |
| Horn not working |1.7.3a| | 1 |
| Front Steering lock stop missing |2.1.3| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease left |3.2.A1k| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Nearside Front shock absorber seal failed and leaking oil and o/s |2.3.3| | 1 |
| Offside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Direction indicators not working front indicators flashing at same time |1.5.1c| | 1 |
| Front Direction indicators affected by the operation of another lamp Both front indicators flash at same time |1.5.1c| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride chain split link |6.2.1h| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Exhaust excessively deteriorated silencer |7.1.1a| | 1 |
| Exhaust is leaking and excessively noisey hole in silencer |7.1.1b| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front suspension has severe distortion of a load bearing member or its supporting structure. |2.3.8| | 1 |
| Central Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear suspension bush has excessive free play btm of shock |2.4.A2a|i|| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Upper Fork yoke deformed |2.1.1b| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Direction indicator not working Rear |4.4.1 |a| |ii|| | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Clutch lever bent so it cannot be readily operated (6.2.7 (b)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Stop lamp not working when rear brake pressed (4.3.1 (a) (ii)) | 1 |
| Nearside Rear Suspension component pin or bush excessively worn swing arm mount (5.3.4 (a) (i)) | 1 |
| Headlamp insecure (1.2.3b) | 1 |
| Nearside Handlebar handgrip not secure to handlebars. (2.1.1c) | 1 |
| Rear Stop lamp remains on when the brake is released (1.3.1e) | 1 |
| Horn not working (1.7.3a) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Direction indicator not working front and rear (4.4.1 (a) (ii)) | 1 |
| Shock absorber has a serious fluid leak Front (5.3.2 (b)) | 1 |
| Brake disc contaminated Front (1.1.14 (b)) | 1 |
| Front Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Brake disc contaminated oil on front disc (1.1.14 (b)) | 1 |
| Rear suspension bearing has excessive free play (2.4.A2a(i)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Nearside Front Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| Offside Front Throttle operating incorrectly Increased revs when the steering is turned to the right (6.2.7 (a) (i)) | 1 |
| Offside Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Fuel pipe leaking fuel tap (6.1.3 (b) (i)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Front Brake lever has restricted free movement (1.1.15 (e)) | 1 |
| Nearside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Front Brake fluid significantly below minimum mark (1.1.10 (d) (ii)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Nearside Front All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Nearside Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Front Dipswitch does not operate immediately when selected on main beam (4.1.3 (b)) | 1 |
| Front Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected (5.2.1 (c) (ii)) | 1 |
| Front Brake master cylinder defective but brake still operating (1.1.10 (b) (i)) | 1 |
| Fuel system component leaking (6.1.3 (b) (i)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Stop lamp not working front (4.3.1 (a) (ii)) | 1 |
| Offside Rear Footrest insecure Bolt Sheared (6.2.12 (a)) | 1 |
| Nearside Front Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Nearside Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Nearside Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Position lamp not working sidelight not working (4.2.1 (a)) | 1 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Exhaust has a major leak of exhaust gases exhaust blowing at cylinder head (6.1.2 (a)) | 1 |
| Rear Position lamp not working tail lamp not working (4.2.1 (a)) | 1 |
| Rear Shock absorber has an excessively worn bush Lower shock bush (5.3.2 (c)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Rear Wheel spindle locking device missing (5.2.1 (d)) | 1 |
| Rear Position lamp likely to become detached (4.2.1 (c) (ii)) | 1 |
| Steering headbearing has excessive wear or free play Good condition but required adjustment (2.2.2 (f) (i)) | 1 |
| Fuel system component leaking Carburetor gasket leaking (6.1.3 (b) (i)) | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Rear Motorcycle structure corroded to the extent that the rigidity of the assembly is significantly reduced swinging arm (6.1.1 (c) (i)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |