| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 65 |
| Registration plate issues | 36 |
| Registration plate lamp issues | 25 |
| Rear reflector on motorcycle missing |1.4.1| | 12 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| 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 |
| Horn not working |1.7.3a| | 5 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 3 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Nearside Front Direction indicators not working |1.5.1c| | 3 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Offside Rear Direction indicators not working |1.5.1c| | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Nearside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear 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 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Drive belt worn to excess stone damage |6.2.1e| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Front Brake cylinder cracked at lever pivot (1.1.16 (a) (i)) | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Front Brake hose damaged and likely to fail (1.1.12 (a)) | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Front Headlamp lens seriously defective (4.1.1 (b) (ii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Fuel cap sealing washer torn |7.2.2c| | 1 |
| Stop lamp not working Stop lamp not working from front control. (4.3.1 (a) (ii)) | 1 |
| Dipswitch does not operate immediately when selected on main beam poor conection on switch though now working with switch cleaner (4.1.3 (b)) | 1 |
| Headlamp insecure |4.1.1 |c|| | 1 |
| All direction indicators adversely affected by the operation of another lamp |4.4.3 |b|| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking Front wheel spindle loose |6.1.1c| | 1 |
| Front Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Drive belt excessively tight (6.1.7 (k) (i)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Brake hose damaged and likely to fail Insecure |1.1.12 |a|| | 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 |
| Direction indicators not working |1.5.1c| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Stop lamp not working foot brake does not illuminate stop lamp (4.3.1 (a) (ii)) | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Brake disc|s| cracked both |3.2.A1g| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Nearside Front Footrest insecure (6.2.12 (a)) | 1 |
| Rear Direction indicator obviously incorrectly positioned Incorrect separation distance between rear indicators. (4.4.3 (a)) | 1 |
| Offside Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Inner Front Direction indicator not working |1.5.1c| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Nearside Front Steering control fouling between components which interferes with the free movement of the steering Steering lock restricted by accessories |2.1.2a| | 1 |
| Rear Brake component worn and seriously reduced in strength rear disc heavily scored |3.2.A1| | 1 |
| Steering headbearing excessively stiff or notchy notchy (2.2.2 (f) (i)) | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Offside Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Brake caliper insecure retaining pin R clip missing (1.1.16 (c) (i)) | 1 |
| Brake caliper insecure retaining pin R clip missing (1.1.16 (c) (i)) | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Rear Brake disc fractured |1.1.14 |a| |ii|| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Rear Brake fluid significantly below minimum mark (1.1.10 (d) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Stop lamp not working when applying front brake control (4.3.1 (a) (ii)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Front All position lamps not working (4.2.1 (a)) | 1 |
| Front Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Position lamp not working tail light |4.2.1 |a|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |