| Most common failures | No# failures |
|---|
| Registration plate issues | 35 |
| Rear reflector on motorcycle missing |1.4.1| | 33 |
| Headlamp aim out of alignment | 26 |
| Front wheel bearings have excessive free play |2.3.5b| | 16 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 12 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 12 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Registration plate lamp issues | 8 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 7 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 7 |
| Drive chain excessively loose |6.2.1d| | 7 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Direction indicators not working |1.5.1c| | 4 |
| Rear reflector missing |4.8.2 |a| |ii|| | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 4 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front Direction indicator missing |1.5.1a| | 3 |
| Rear Direction indicator missing |1.5.1a| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Horn not working |1.7.3a| | 3 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Offside Rear Direction indicators not working |1.5.1c| | 3 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Centre Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Wheel spoke excessively loose |4.2.1b| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Nearside Front Direction indicator missing |1.5.1a| | 2 |
| Offside Front Direction indicator missing |1.5.1a| | 2 |
| Nearside Rear Direction indicator missing |1.5.1a| | 2 |
| Offside Rear Direction indicator missing |1.5.1a| | 2 |
| Nearside Rear Footrest insecure |6.2.1a| | 2 |
| Offside Rear Footrest insecure |6.2.1a| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 2 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Rear Brake excessively binding |1.2.1 |f|| | 2 |
| Front Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake fluid reservoir insecurely mounted |3.2.B1a| | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Brake hose damaged | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Front Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Front Front suspension assembly component cracked |2.3.1| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Lower Front suspension assembly component cracked |2.3.1| | 1 |
| 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| | 1 |
| Rear Footrest insecure |6.2.1a| | 1 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Brake lever has insufficient reserve travel FRONT |1.1.2 |a|| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Built up wheel has a loose bolt/s |4.2.1c| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Centre Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Throttle operating incorrectly sticks open on both locks and stiff when facing forward |6.2.1f| | 1 |
| Rear wheel spindle securing nut locking device missing split pin missing |2.4.A.2b| | 1 |
| Rear suspension bush has excessive free play bottom shock mount |2.4.A2a|i|| | 1 |
| Fuel system component leaking over flow pipe on carb |7.2.1a| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort warped (1.2.1 (e)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Front Decelerometer brake test indicates a binding brake |3.3.E1d| | 1 |
| Motorcycle structure joining/attachment plate or fastening insecure Rear grab rail insecure |6.1.1 |b| |i|| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Motorcycle structure joining/attachment plate or fastening insecure (6.1.1 (b) (i)) | 1 |
| Motorcycle structure joining/attachment plate or fastening insecure (6.1.1 (b) (i)) | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Rear Lower Drive chain excessively loose |6.2.1d| | 1 |
| Offside Rear Lower Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Rear position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear position lamp damaged and function impaired light not working |1.1.1b| | 1 |
| Rear reflector on motorcycle does not reflect squarely to the rear |1.4.1| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Rear Brake grabbing severely (1.2.1 (c)) | 1 |
| Brake has no recorded effort at a wheel |1.2.1 |a| |ii|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Offside Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Drive chain horseshoe locking device incorrectly fitted |6.1.7 |j| |i|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.4 |a|| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Brake hose which buldges |3.2.B4| | 1 |
| Brake hose excessively deteriorated | 1 |
| Wheel spoke missing |4.2.1b| | 1 |
| Rear Brake component damaged and seriously reduced in strength |3.2.A1| | 1 |
| Headlamp incorrect colour |1.2.1| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Central Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Front Wheel more than one fixing loose (5.2.1 (a) (ii)) | 1 |
| Position lamp switch does not operate the front and rear position lamps |1.1.4c| | 1 |
| Fuel pipe leaking fit fuel pipe clips |7.2.1a| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on rear lamp not working |1.1.3a| | 1 |
| Fuel system component insecure fuel pipe clips missing |7.2.1b| | 1 |
| Front Position lamp not working side light (4.2.1 (a)) | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Stop lamp does not emit a steady light intermittent |1.3.1b| | 1 |
| Offside Position lamp switch insecure |1.1.4b| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Centre Rear Lower Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |