| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 38 |
| Registration plate issues | 27 |
| Rear reflector on motorcycle missing |1.4.1| | 27 |
| Drive chain excessively loose |6.2.1d| | 14 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 12 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 11 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 9 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Rear reflector missing (4.8.2 (a) (ii)) | 8 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 8 |
| 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| | 6 |
| Drive chain worn to excess |6.2.1e| | 6 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Stop lamp remains on when the brakes are released | 5 |
| Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Front wheel bearings are excessively rough |2.3.5b| | 4 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 4 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Front Brake disc|s| cracked |3.2.A1g| | 4 |
| Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 4 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Front Steering headbearing has excessive free play |2.2.2| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| 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)) | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Front Horn control defective |1.7.2a| | 2 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear Stop lamp insecure |1.3.3b| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| 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|| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 2 |
| Fuel tank leaking |7.2.1a| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Front Wheel bearing has excessive play front wheel has side to side movement, spacing may be incorrect. does feel like slight play in the front wheel bearings with it. (5.1.3 (a) (i)) | 1 |
| Rear suspension component loose swinging arm mounting bolt |2.4.A.1a| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Registration plate lamp issues | 1 |
| Rear Rear suspension component loose |2.4.A.1a| | 1 |
| Offside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Central Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake component leaking fluid |3.2.B4| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Position lamp switch insecure |1.1.4b| | 1 |
| Offside Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Offside Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Direction indicators affected by the operation of another lamp you cannot have indicators on front or back permantly on and then just getting brighter when turn switched on no good uk road use now |1.5.1c| | 1 |
| Front Front position lamp incorrect colour running lights front must be white and not part of indicator circuit |1.1.2a| | 1 |
| Offside Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Steering lock stop ineffective |2.1.3| | 1 |
| Front Front position lamp insecure |1.1.1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Steering operation linkage fouling when handlebars turned from lock to lock (2.1.4 (a)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Fuel cap leaking (6.1.3 (b) (i)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Central Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Inner Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Lower Locking device|s| 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 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Rear Seat insecure |6.2.1a| | 1 |
| Nearside Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Rear Direction indicators not working (1.5.1c) | 1 |
| Front Brake disc(s) friction surface contaminated by oil or grease (3.2.A1k) | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Centre Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Offside 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 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Brake pedal is inoperative |3.1.3c| | 1 |
| Offside Front Footrest missing |6.2.1a| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition Baffles missing (8.1.1 (a)) | 1 |
| Headlamp aim projected beam image obviously incorrect kick up on wrong side (4.1.2 (c)) | 1 |
| Suspension arm ball joint excessively worn swinging arm bushes (5.3.4 (a) (i)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear Direction indicator insecure |1.5.3b| | 1 |
| Central Front Headlamp aim headlamp damaged and function impaired Bulb was fitted upside down in bulb holder |1.2.3a| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Centre Rear Drive chain worn to excess |6.2.1e| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Offside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Horn not working |1.7.3a| | 1 |
| Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Brake lever mounting cracked |3.1.2c| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Brake performance not tested |3.3| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Floor brake test Neither brake control achieves an efficiency of 25% |3.3.C1b| | 1 |
| Offside Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Offside Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear Lower Brake component modification unsafe Brake cable not fitted correctly (1.1.21 (d) (i)) | 1 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front 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 |
| Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Offside Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Front Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Rear 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 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Decelerometer brake test the less effective brake control does not achieve an efficiency of 25%. |3.3.E1b| | 1 |
| Chain guard fouling another component |6.2.1c| | 1 |
| Front Position lamp missing |4.2.1 |a|| | 1 |
| Front Front position lamp missing |1.1.1a| | 1 |
| Front Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front position lamp missing bulb inop |1.1.1a| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |