| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 13 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Drive chain worn to excess |6.2.1e| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 3 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Horn not working |1.7.3a| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Offside Front Direction indicator insecure |1.5.3b| | 2 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Registration plate issues | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Rear Wheel spoke excessively loose |4.2.1b| | 2 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| An item not tested |Manual| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Rear Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Offside Rear Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Brake component insecure missing locking pin from rear brake arm (1.1.21 (c)) | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Nearside Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Rear Decelerometer brake test indicates a sticking brake |3.3.E1d| | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Front Stop lamp switch with a delay in operation |4.3.2 |a| |ii|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear Brake grabbing severely |1.2.1 |c|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Throttle operating incorrectly revs rising in right hand lock (6.2.7 (a) (i)) | 1 |
| Horn not working not working when lights on ( not working when ridden ) (7.7 (a) (ii)) | 1 |
| Front Headlamp incorrect colour led fitted incorrect bulb (4.1.4 (a)) | 1 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen incorrect bulb no pattern (4.1.2 (a)) | 1 |
| Horn sound not in accordance with requirements |7.7 |c|| | 1 |
| All direction indicators adversely affected by the operation of another lamp |4.4.3 |b|| | 1 |
| Nearside Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Offside Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Exhaust system insecure |6.1.2 |a|| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Rear Suspension arm attachment bracket/mounting insecure Swing arm. |5.3.3 |a| |i|| | 1 |
| Chain guard fouling another component |6.2.1c| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Offside Rear Lower Stop lamp missing |1.3.3a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Headlamp aim not tested adversely affected by operation of other lamps and horn (4.1.2 (b)) | 1 |
| All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Fuel cap leaking (6.1.3 (b) (i)) | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Lower Brake reaction bracket insecure |3.2.A1j| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Nearside Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Offside Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Brake component inadequately mounted torque arm no locking device (1.1.21 (c)) | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Steering linkage component deformed front end misaligned (2.1.3 (c) (i)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Front Brake lever cracked |3.1.2c| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.4 |a|| | 1 |
| Headlamp light source and lamp not compatible bulb incorrectly fitted causing poor image |4.1.4 |c|| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Stop lamp missing |1.3.3a| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Direction indicator insecure |1.5.3b| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear suspension bush has excessive free play swing arm |2.4.A2a|i|| | 1 |
| Rear Plate brake test indicates a sticking brake |3.3.B1a| | 1 |
| Offside Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |