| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 43 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 18 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 14 |
| Drive chain worn to excess |6.2.1e| | 12 |
| Rear reflector on motorcycle missing |1.4.1| | 12 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 11 |
| Drive chain excessively loose |6.2.1d| | 11 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 8 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 8 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 7 |
| Registration plate issues | 7 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 6 |
| Rear reflector missing (4.8.2 (a) (ii)) | 6 |
| Rear reflector on motorcycle obscured |1.4.1| | 5 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 3 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Rear reflector on motorcycle obscured |1.4.2b| | 3 |
| Headlamp aim not tested |1.6| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Rear Drive chain excessively loose |6.2.1d| | 3 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Headlamp insecure (4.1.1 (c)) | 3 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Offside Rear Direction indicator insecure |1.5.3b| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Chain guard insecure |6.2.1c| | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Horn not working |1.7.3a| | 2 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Front Headlamp aim not tested (4.1.2 (b)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 2 |
| Offside Rear Footrest missing (6.2.12 (a)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 2 |
| Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Brake pedal cracked |3.1.2c| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Steering operation restricted in free movement from lock to lock |2.1.4 |c|| | 1 |
| Front Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Direction indicator incorrect colour |1.5.1b| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Centre Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear suspension component excessively corroded. |2.4.A.1a| | 1 |
| Rear Brake component inadequately mounted |1.1.21 |c|| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Nearside Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Front Motorcycle structure has a fracture which is likely to adversely affect braking or steering top yoke |6.1.1 |a| |ii|| | 1 |
| Front All position lamps not working |4.2.1 |a|| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear Stop lamp adversely affected by the operation of another lamp comes on with side lights |4.3.3 |b|| | 1 |
| Fuel cap ineffective |6.1.3 |b| |i|| | 1 |
| Engine mounting/bracket missing bolt missing from front engine plate |6.1.8 |a| |ii|| | 1 |
| Offside Rear Footrest insecure |6.2.12 |a|| | 1 |
| Nearside Rear Drive chain sprocket so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Offside Rear Exhaust system insecure silencer insecure |6.1.2 |a|| | 1 |
| Rear Rear wheel spindle loose |2.4.A.2b| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Offside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Front Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Centre Rear Upper Rear reflector on motorcycle missing |1.4.1| | 1 |
| Offside Front Upper Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| An item not tested |Manual| | 1 |
| Rear Brake back plate|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Nearside Front Direction indicator incorrect colour |4.4.3 |a|| | 1 |
| Offside Front Direction indicator incorrect colour |4.4.3 |a|| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Front Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Rear Rear position lamp missing |1.1.1a| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected pitted |2.2.2 |f| |ii|| | 1 |
| Drive chain sprocket so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Rear Wheel fixing loose |single fixing| |5.2.1 |a| |ii|| | 1 |
| Rear Brake has no recorded effort at a wheel |1.2.1 |a| |ii|| | 1 |
| Brake lining|s| less than 1.0 mm thick |1.1.13 |a|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Nearside Front Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride clutch lever cable adjuster locking device loose |6.2.1h| | 1 |
| Rear wheel spindle securing nut locking device missing split pin missing |2.4.A.2b| | 1 |
| Wheel fixing loose |single fixing| |5.2.1 |a| |ii|| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Brake caliper insecurely mounted and braking performance affected |1.1.16 |c| |ii|| | 1 |
| Rear Brake lever pivot excessively worn brake leaver |1.1.1 |b|| | 1 |
| Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Rear Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Nearside Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Front Position lamp switch insecure (4.2.2 (b)) | 1 |
| Nearside Front Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Nearside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Front Throttle control functioning such that safe operation of the motorcycle is adversely affected CABLE AND HOUSING DAMAGED (6.2.7 (a) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Rear Wheel fixing loose (single fixing) WHEEL NUT MISSING ALTOGETHER (5.2.1 (a) (ii)) | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Front Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Central Front Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 1 |
| Nearside Rear Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Steering headbearing has excessive wear or free play Head bearings excessive play (2.2.2 (f) (i)) | 1 |
| Central Front Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Drive chain sprocket excessively loose Worn cush drive (6.1.7 (c) (i)) | 1 |
| Front Position lamp missing (4.2.1 (a)) | 1 |
| Nearside Front Direction indicator obviously incorrectly positioned LESS THAN 240 MM APART FROM OPPOSITE LAMP (4.4.3 (a)) | 1 |
| Offside Front Direction indicator obviously incorrectly positioned LESS THAN 240 MM APART FROM OPPOSITE LAMP (4.4.3 (a)) | 1 |
| Nearside Front Suspension component damaged and seriously weakened STANCHION BENT (5.3.3 (b) (i)) | 1 |
| Offside Front Suspension component damaged and seriously weakened STANCHION BENT (5.3.3 (b) (i)) | 1 |
| Exhaust has a major leak of exhaust gases HOLE IN SILENCER UNDER INNER BRACKET (6.1.2 (a)) | 1 |
| Drive chain worn to excess AND RATTLING (6.1.7 (c) (i)) | 1 |
| Front Drive chain sprocket worn to excess WORN CAUSING CHAIN TO JUMP (6.1.7 (c) (i)) | 1 |
| Rear Brake pedal has insufficient reserve travel EXCESSIVE TRAVEL (1.1.2 (a)) | 1 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Offside Front Brake lever not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| All direction indicators not working Relay melted (4.4.1 (a) (ii)) | 1 |
| Front Wheel fixing missing (single fixing) split pin missing (5.2.1 (a) (ii)) | 1 |
| Rear Brake lever pivot excessively tight brake plate arm. (1.1.1 (a)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Wheel fixing missing (multiple fixings) (5.2.1 (a) (i)) | 1 |
| Nearside Front Upper Suspension rod attachment bracket/mounting insecure yoke loose on stanchion (5.3.3 (a) (i)) | 1 |
| Offside Front Upper Suspension rod attachment bracket/mounting insecure yoke loose on stanchion (5.3.3 (a) (i)) | 1 |
| Rear Brake cable insecure | 1 |
| Front Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected spindle locking device missing (5.2.1 (c) (ii)) | 1 |
| Rear Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected spindle locking device missing (5.2.1 (c) (ii)) | 1 |
| Offside Rear Wheel fixing loose (single fixing) spindle adjustment threads stripped (5.2.1 (a) (ii)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen lamp fitted upside down (4.1.2 (a)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak Fork stanchion leg seal (5.3.2 (b)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Rear Drive chain sprocket so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Offside Rear Lower Suspension attachment bracket/mounting insecure SPINBLE NUT NO SPLIT PIN (5.3.3 (a) (i)) | 1 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Nearside Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Nearside Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Exhaust system insecure (6.1.2 (a)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Rear reflector defective or damaged by more than 50% of the reflecting surface obscured (4.8.1 (a) (ii)) | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Rear Brake grabbing severely Appears to grab badly after full brake execution (1.2.1 (c)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Nearside Rear Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Footrest missing rear foot rests missing (6.2.12 (a)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen no e marks on lamp lens (4.1.2 (a)) | 1 |
| Central Front Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Central Front Horn not working (7.7 (a)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Offside Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Wheel spindle locking device missing (5.2.1 (d)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls Front switch inop (4.3.2 (a) (iii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |