| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 12 |
| Drive chain excessively loose |6.2.1d| | 7 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 4 |
| Registration plate issues | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Horn not working |1.7.3a| | 3 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Rear suspension component excessively corroded. |2.4.A.1a| | 2 |
| Rear Wheel spoke excessively loose |4.2.1b| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear Wheel spoke cracked. |4.2.1b| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Fuel system component leaking (6.1.3 (b) (i)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Rear Direction indicator missing (4.4.1 (a) (ii)) | 1 |
| Front Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Wheel spoke excessively corroded |4.2.1b| | 1 |
| Nearside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Rear suspension component misaligned |2.4.A.1a| | 1 |
| Offside Rear Direction indicator missing (4.4.1 (a) (ii)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Offside Rear Lower Brake rod insecure Missing locking pin (1.1.15 (c)) | 1 |
| Offside Rear Upper Brake rod insecure Insecurely fastened (1.1.15 (c)) | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 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 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Brake hose damaged | 1 |
| Front wheel spindle securing nut locking device insecure |2.3.5a| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Chain guard fouling another component |6.2.1c| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Nearside Fuel system component insecure |7.2.1b| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |