| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 15 |
| Registration plate issues | 13 |
| Headlamp aim beam image kick up to the offside |1.6| | 10 |
| Rear reflector on motorcycle missing |1.4.1| | 6 |
| Horn not working |1.7.3a| | 6 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Direction indicator not working |1.5.1c| | 2 |
| Centre Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Nearside Position lamp switch insecure |1.1.4b| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Offside Front All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Stop lamp not working NOT WORKING VIA FRONT LEVER (4.3.1 (a) (ii)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Brake back plate|s| insecure |3.2.A1j| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Offside Front Handlebar handgrip missing |2.1.1c| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Front Brake lever mounting cracked |3.1.2c| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Rear Brake locking device missing |3.2.A1e| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Suspension arm insecurely attached bolt lose and no locking device either end |5.3.3 |a| |i|| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose split pin missing |3.2.A1j| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Centre Front Upper Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Rear Lower Drive chain excessively loose |6.2.1d| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Centre Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Headlamp light source and lamp not compatible (4.1.4 (c)) | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Rear Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Rear wheel bearings are excessively tight |2.4.A.2c| | 1 |
| Fuel cap ineffective |6.1.3 |b| |i|| | 1 |
| Nearside Rear Direction indicator missing |4.4.1 |a| |ii|| | 1 |
| Offside Rear Direction indicator missing |4.4.1 |a| |ii|| | 1 |
| Nearside Front Direction indicator light intensity significantly reduced |4.4.3 |a|| | 1 |
| Offside Front Direction indicator light intensity significantly reduced |4.4.3 |a|| | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Brake reaction bracket securing bolt(s) loose (3.2.A1j) | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Centre Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Offside Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Rear 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 Brake pedal has inadequate reserve travel |3.1.3b| | 1 |