| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 21 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Headlamp aim beam image kick up to the offside |1.6| | 7 |
| Horn not working |1.7.3a| | 6 |
| Drive chain excessively loose |6.2.1d| | 5 |
| Registration plate issues | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Front Wheel spoke excessively loose |4.2.1b| | 2 |
| Nearside Steering lock stop maladjusted |2.1.3| | 2 |
| Offside Steering lock stop maladjusted |2.1.3| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Direction indicator not working N /S /F inoperative (4.4.1 (a) (ii)) | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Front Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Stop lamp does not illuminate immediately a brake applies From front switch |1.3.1a| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Nearside Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Position lamp not working Rear (4.2.1 (a)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Rear Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Drive chain horseshoe locking device likely to become detached |6.1.7 |j| |ii|| | 1 |
| Brake hose excessively damaged front (1.1.12 (b) (ii)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Brake pipe likely to be fouled or trapped by moving parts Front brake pipe incorrectly supported |3.2.B2c| | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride Side stand return spring |6.2.1h| | 1 |
| Footrest insecure Rear footrest mounting rail |6.2.1a| | 1 |
| Nearside Rear Lower Exhaust excessively deteriorated silencer ha slight leak but solid repair. |7.1.1a| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Offside Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Front Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Front Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Brake pipe union leaking fluid Front |3.2.B4| | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Stop lamp does not illuminate immediately a brake applies Intermittent connection in lamp ass`y |1.3.1a| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Direction indicators not working indicators not working |1.5.1c| | 1 |
| Fuel system component leaking fuel tap leaking |7.2.1a| | 1 |
| Brake component leaking fluid rear brake caliper,disc and pads covered in fluid/oil |3.2.B4| | 1 |
| Front Wheel spindle loose (5.2.1 (c) (i)) | 1 |
| Rear reflector on motorcycle does not reflect squarely to the rear |1.4.1| | 1 |
| Front Brake component defective due to a deliberate modification which significantly reduces the original strength threaded bolt fitted and no retaining pin |3.1.5| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride Chain link worn |6.2.1h| | 1 |
| Front Front wheel spindle securing nut locking device insecure |2.3.3a| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Stop lamp does not illuminate immediately a brake applies both controls |1.3.1a| | 1 |
| Centre Front Upper Horn not working |1.7.3a| | 1 |
| Nearside Rear Lower Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |