| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 22 |
| Headlamp aim beam image kick up to the offside |1.6| | 13 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 9 |
| Drive chain excessively loose |6.2.1d| | 9 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 6 |
| Rear reflector on motorcycle obscured |1.4.1| | 5 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 5 |
| Offside Rear Footrest insecure |6.2.1a| | 4 |
| Rear Footrest missing |6.2.1a| | 4 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear reflector on motorcycle obscured |1.4.2b| | 3 |
| Rear Position lamp not working |4.2.1 |a|| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 3 |
| Rear Suspension arm pin or bush excessively worn |5.3.4 |a| |i|| | 2 |
| Offside Rear Direction indicator insecure |1.5.3b| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Nearside Rear Footrest insecure |6.2.1a| | 2 |
| Rear suspension bush has excessive free play swing arm |2.4.A2a|i|| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Brake pedal cannot be released smoothly |3.1.3d| | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Nearside Rear Drive chain excessively tight |6.2.1d| | 2 |
| Nearside Front Footrest insecure |6.2.1a| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Roller brake test brake efficiency less than 27.5% overall |1.2.2 |a| |ii|| | 1 |
| Rear Suspension arm likely to become detached |5.3.3 |a| |ii|| | 1 |
| Rear Suspension arm corroded and seriously weakened |5.3.3 |b| |i|| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Registration plate lamp issues | 1 |
| Steering headbearing in such a condition that steering control is adversely affected stiff and notchy |2.2.2 |f| |ii|| | 1 |
| Front Brake component insecure brake caliper top slide loose |1.1.21 |c|| | 1 |
| Rear Suspension component mounting has an unsafe modification rear bottom mount bolts not reaching locking point only on by a few threads |5.3.3 |c| |i|| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Headlamp aim beam image kick up to the offside TAPED |1.6| | 1 |
| Drive chain excessively loose ADJUSTED |6.2.1d| | 1 |
| Rear Suspension arm pin or bush excessively worn swing arm |5.3.4 |a| |i|| | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 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 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Suspension arm attachment bracket/mounting insecure rear swing arm (5.3.3 (a) (i)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Central Motorcycle structure excessively distorted centre stand not lifting motorbike collapses forward |6.1.1a| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Rear suspension component loose swing arm excesive play adversely affecting alignment |2.4.A.1a| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Rear Direction indicator incorrect colour white bulb fitted |1.5.1b| | 1 |
| Rear Stop lamp switch with a delay in operation |4.3.2 |a| |ii|| | 1 |
| Front Headlamp lens seriously defective |4.1.1 |b| |ii|| | 1 |
| Front Steering headbearing in such a condition that steering control is adversely affected STIFF |2.2.2 |f| |ii|| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride chain fish clip missing |6.2.1h| | 1 |
| Rear suspension movement is excessively stiff l/s weaker than r/s |2.4.A.3b| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Stop lamp does not illuminate immediately a brake applies rear brake |1.3.1a| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Lower Motorcycle structure excessively corroded Swing Arm |6.1.1a| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Centre Front Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Headlamp not working on dipped beam Dipped beam not working |4.1.1 |a| |ii|| | 1 |
| Rear Rear reflector missing Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Offside Rear Footrest insecure HANGER CRACKED |CAN NOT BE USED| |6.2.1a| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Front Brake master cylinder leaking |1.1.10 |b| |ii|| | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected To much free play |6.2.7 |a| |ii|| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls Rear switch defective (4.3.2 (a) (iii)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Central Front Upper All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Rear suspension bush has excessive free play rear swing arm |2.4.A2a|i|| | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Nearside Steering linkage locking device missing (2.1.3 (d)) | 1 |
| Offside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Rear Brake component insecure and brake arm spit pin missing |1.1.21 |c|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen wrong way |4.1.2 |a|| | 1 |
| Rear Rear reflector missing missing |4.8.2 |a| |ii|| | 1 |
| Nearside Front Handlebar deformed |2.1.1b| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies rear brake light switch |1.3.1a| | 1 |
| Rear Lower Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Rear Stop lamp emits other than a steady red light switch |1.3.1b| | 1 |
| Registration plate issues | 1 |
| Nearside Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Centre Rear Upper Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Drive chain sprocket so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Motorcycle structure has excessive corrosion which adversely affects braking or steering Swing-arm |6.1.1 |c| |ii|| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Front Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Rear Brake locking device missing reaction bracket split pin |3.2.A1e| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride split link direction |6.2.1h| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Exhaust system insecure (6.1.2 (a)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Rear Suspension arm ball joint excessively worn swing arm bushes excessively worn (5.3.4 (a) (i)) | 1 |
| Front Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. swing arm |2.4.A.2d| | 1 |
| Offside Handlebar deformed bent upwards |2.1.1b| | 1 |
| Exhaust excessively deteriorated pipe to end can |7.1.1a| | 1 |
| Exhaust is leaking and excessively noisey pipe to end can |7.1.1b| | 1 |
| Front Direction indicator insecure both |1.5.3b| | 1 |
| Throttle operating incorrectly throttle body spins round |6.2.1f| | 1 |
| Rear suspension bearing has excessive free play swingarm main bearings |2.4.A2a|i|| | 1 |
| Front mudguard can easily contact any fixed point of the motor bicycle. Catching exhaust |2.3.7| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Chain guard fouling another component |6.2.1c| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Horn not working Wire (7.7 (a) (ii)) | 1 |
| Front Direction indicator insecure |1.5.3b| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |