| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 40 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 20 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 17 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 16 |
| Drive chain excessively loose |6.2.1d| | 12 |
| Registration plate issues | 12 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Headlamp aim beam image kick up to the offside |1.6| | 11 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 10 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Drive chain worn to excess |6.2.1e| | 8 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 7 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 7 |
| Drive chain excessively tight |6.2.1d| | 7 |
| Throttle operating incorrectly |6.2.1f| | 7 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 6 |
| Rear reflector on motorcycle missing |1.4.1| | 6 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Horn not working |1.7.3a| | 6 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 4 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 4 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 4 |
| Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| Offside Rear Footrest missing |6.2.1a| | 4 |
| 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| | 4 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Headlamp insecure |1.2.3b| | 4 |
| Fuel system component leaking |7.2.1a| | 3 |
| Front Brake lever insecure (1.1.2 (e) (i)) | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Riders seat insecure (6.2.5 (a) (ii)) | 2 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 2 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 2 |
| Nearside Handlebar mounting clamp loose |2.1.1a| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Headlamp insecure (4.1.1 (c)) | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 2 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 2 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Registration plate lamp issues | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls switch (4.3.2 (a) (iii)) | 1 |
| Rear Brake fluid reservoir fluid not visible leaking (1.1.10 (d) (iii)) | 1 |
| Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Brake fluid reservoir fluid not visible (1.1.10 (d) (iii)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear Brake excessively binding linkages lubricated (1.2.1 (f)) | 1 |
| Nearside Front Direction indicator incorrect colour |4.4.3 |a|| | 1 |
| Offside Front Direction indicator incorrect colour |4.4.3 |a|| | 1 |
| Nearside Rear Direction indicator incorrect colour |4.4.3 |a|| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Nearside Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Seat insecure |6.2.1a| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Front wheel insecure |4.2.3b| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Rear Brake locking device missing brake rod |3.2.A1e| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Handlebar mounting excessively deteriorated |flexible type| |2.1.1d| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Front Steering lock stop missing |2.1.3| | 1 |
| Nearside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 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 Brake back plate insecure (1.1.14 (d)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Rear Stop lamp switch with a delay in operation |4.3.2 |a| |ii|| | 1 |
| Nearside Brake lever pivot has excessive free play clutch lever loose |1.1.1 |b|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Offside Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Front Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Front Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Front Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Front Brake master cylinder severely damaged |3.2.B1b| | 1 |
| Shock absorber has a serious fluid leak both front |5.3.2 |b|| | 1 |
| Shock absorber has negligible damping effect both front |5.3.2 |b|| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear wheel bearings are excessively tight |2.4.A.2c| | 1 |
| Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Brake master cylinder leaking hydraulic fluid from master to pipe banjo joint |3.2.B1e| | 1 |
| Brake lever attachment screws missing nut missing |3.1.2b| | 1 |
| Brake locking device insecure |3.2.A1e| | 1 |
| Offside Front Brake reaction bracket insecure |3.2.A1j| | 1 |
| Front Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Seat insecure |6.2.1a| | 1 |
| Front Brake fluid significantly below minimum mark |1.1.10 |d| |ii|| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Centre Upper Front suspension assembly component loose |2.3.1| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Offside Upper Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Brake lever attachment screws loose |3.1.2b| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Nearside Position lamp switch insecure |1.1.4b| | 1 |
| Offside Position lamp switch insecure |1.1.4b| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Front Brake master cylinder leaking (1.1.10 (b) (ii)) | 1 |
| Offside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose wrong bolt |3.2.A1j| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Front brake disc in such a condition that it is seriously weakened | 1 |
| Front Valve stem seriously damaged at base (5.2.3 (j)) | 1 |
| Rear Valve stem seriously damaged at base (5.2.3 (j)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected rotates on handlebars (6.2.7 (a) (ii)) | 1 |
| Offside Front Exhaust has a major leak of exhaust gases at manifold (6.1.2 (a)) | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Lower Engine mounting/bracket missing (6.1.8 (a) (ii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Brake fluid reservoir fluid not visible lever |1.1.10 |d| |iii|| | 1 |
| Front suspension assembly component excessively bent |2.3.1| | 1 |
| Centre Front Lower Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Offside Front Suspension rod corroded and seriously weakened (5.3.3 (b) (i)) | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Nearside Rear Shock absorber insecurely attached |5.3.2 |a| |i|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Offside Front Footrest missing |6.2.12 |a|| | 1 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear wheel has a missing wheel nut|s| |4.2.3a| | 1 |
| Drive chain horseshoe locking device incorrectly fitted |6.1.7 |j| |i|| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Stop lamp does not illuminate immediately a brake applies front or rear brake |1.3.1a| | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Handlebar handgrip not secure to handlebars. L/H |2.1.1c| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Centre Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Direction indicator obscured |1.5.1a| | 1 |
| Motorcycle structure joining/attachment plate or fastening insecure Side Stand Mounting (6.1.1 (b) (i)) | 1 |
| Rear Upper Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Front Handlebar mounting clamp loose |2.1.1a| | 1 |
| Offside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Nearside Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Fuel cap mounting flange/sealing method defective |7.2.2c| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Rear Front mudguard insecure |2.3.7| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Front Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Brake pipe excessively chafed |3.2.B2a| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Brake pedal insecure REAR |1.1.2 |e| |i|| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Handlebar so insecure it is likely to become detached |2.2.1 |b| |ii|| | 1 |
| Headlamp aim not tested not working main or dipped |1.6| | 1 |
| Brake lever is inoperative master cylinder incorrectly fitted |3.1.3c| | 1 |
| Front position lamp missing instrument light missing |1.1.1a| | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Rear Stop lamp not working rear brake light not working on rear pedal - PRS - Adjust switch position (4.3.1 (a) (ii)) | 1 |
| Offside Handlebar retaining device missing Clamp bolt missing and holes don???t line up (2.2.1 (b) (i)) | 1 |
| Rear Brake pedal is bent and the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Nearside Front Footrest missing Rubber missing (6.2.12 (a)) | 1 |
| Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| Handlebar mounting so insecure that steering is adversely affected (2.2.1 (a) (ii)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Clutch lever positioned so it cannot be readily operated bracket loose (6.2.7 (b)) | 1 |
| Front Brake lever is bent and the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Brake master cylinder defective but brake still operating (1.1.10 (b) (i)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Nearside Front Footrest insecure rubber loose (6.2.12 (a)) | 1 |
| Fuel cap ineffective sealing washer broken (6.1.3 (b) (i)) | 1 |
| Central Rear Lower Direction indicator missing |4.4.1 |a| |ii|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Handlebar restricted in free movement from lock to lock |2.1.4 |c|| | 1 |
| Central Front Lower Horn not working |7.7 |a| |ii|| | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Nearside Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Position lamp lens seriously defective lights up when brakes are applied. |4.2.1 |b|| | 1 |
| Front wheel spindle loose |2.3.5a| | 1 |
| Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Central Front Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced engine mount bolt insecure (6.1.1 (b) (ii)) | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |