| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 47 |
| Drive chain worn to excess |6.2.1e| | 24 |
| Drive chain excessively loose |6.2.1d| | 22 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 16 |
| Registration plate issues | 15 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 11 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 11 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 11 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 10 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 9 |
| Rear Footrest missing |6.2.1a| | 8 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 8 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 7 |
| Offside Rear Footrest insecure |6.2.1a| | 7 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Headlamp insecure |1.2.3b| | 7 |
| Steering headbearing has excessive free play |2.2.2| | 7 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 6 |
| Nearside Rear Footrest missing |6.2.1a| | 6 |
| Offside Rear Footrest missing |6.2.1a| | 6 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 5 |
| Nearside Rear Direction indicator not working |1.5.1c| | 5 |
| Handlebar deformed |2.1.1b| | 5 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Horn not working |1.7.3a| | 5 |
| Rear suspension component excessively corroded. |2.4.A.1a| | 4 |
| Rear Footrest insecure |6.2.1a| | 4 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 4 |
| Nearside Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 4 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 4 |
| Nearside Rear Footrest insecure |6.2.1a| | 4 |
| Offside Front Direction indicators not working |1.5.1c| | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Front Hydraulic brake control creeps under load. |3.1.4a| | 3 |
| Front position lamp missing |1.1.1a| | 3 |
| Front Steering headbearing has excessive free play |2.2.2| | 3 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 3 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Headlamp aim not tested |1.6| | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear Wheel spindle locking device missing (5.2.1 (d)) | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear Brake linkage clevis joint excessively worn |3.2.A1d| | 2 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 2 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Brake locking device missing |3.2.A1e| | 2 |
| Offside Front Direction indicator insecure |1.5.3b| | 2 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 2 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 2 |
| Fuel hose leaking |7.2.1a| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Nearside Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies brake switch |1.3.1a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Steering headbearing excessively stiff or notchy notchy head bearings (2.2.2 (f) (i)) | 1 |
| Nearside Steering operation restricted in free movement from lock to lock brake hose being trapped on N/S lock stop (2.1.4 (c)) | 1 |
| Front Brake disc contaminated contaminated with oil (1.1.14 (b)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen no beam pattern (4.1.2 (a)) | 1 |
| Front Wheel spindle locking device missing (5.2.1 (d)) | 1 |
| Wheel spoke cracked. |4.2.1b| | 1 |
| Centre Rear suspension component excessively corroded. |2.4.A.1a| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Wheel spoke missing |4.2.1b| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 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 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Front Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Handlebar retaining device loose (2.2.1 (b) (i)) | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Registration plate lamp issues | 1 |
| Rear Drive chain sprocket worn to excess inner drive (6.1.7 (c) (i)) | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies stop light does not work when position one is used |1.3.1a| | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Stop lamp does not illuminate immediately a brake applies rear brake |1.3.1a| | 1 |
| Front Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Rear Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Offside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Nearside Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Rear reflector on sidecar incorrectly positioned |1.4.2d| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front Footrest insecure |6.2.1a| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Brake rod excessively damaged |3.2.A1c| | 1 |
| Offside Rear Brake locking device missing |3.2.A1e| | 1 |
| Offside Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Nearside Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Central Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Central Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Wheel spoke excessively bent |4.2.1b| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Rear Upper Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Footrest missing both pillion pegs missing, dual seat fitted (6.2.12 (a)) | 1 |
| Nearside Front Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Front Exhaust excessively deteriorated |7.1.1a| | 1 |
| Offside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Nearside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Fuel hose so insecure there is a risk of fire (6.1.3 (a) (ii)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Nearside Handlebar handgrip missing |2.1.1c| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Front shock absorber seal failed and leaking oil left
|2.3.3| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Rear Rear suspension component loose |2.4.A.1a| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Direction indicator likely to become detached all |4.4.1 |c| |ii|| | 1 |
| Nearside Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Fuel system component leaking fuel tap |7.2.1a| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Upper Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Front position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Centre Rear Stop lamp insecure |1.3.3b| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Front Brake pipe union leaking fluid |3.2.B4| | 1 |
| Rear reflector on sidecar missing |1.4.1| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Offside Position lamp switch insecure |1.1.4b| | 1 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride front wheel spindle split pin missing |6.2.1h| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride rear wheel spindle split pin missing |6.2.1h| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride rear brake torque am split pin missing |6.2.1h| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Offside Rear Lower Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Nearside Rear Lower Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Front Exhaust mounting missing |7.1.1c| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Centre Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Centre Front Upper Handlebar deformed |2.1.1b| | 1 |
| Brake locking device insecure |3.2.A1e| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Wheel spoke excessively loose |5.2.2 |d|| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride sprocket bolt lock tabs |6.2.1h| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Seat insecure |6.2.1a| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Front Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Front Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| An item not tested |Manual| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Brake fluid reservoir cap missing |3.2.B1c| | 1 |