| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 20 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Horn not working |1.7.3a| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 6 |
| Steering headbearing has excessive free play |2.2.2| | 6 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Sidecar attachment insecure |5.1.1b| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Rear wheel spindle loose |2.4.A.2b| | 2 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 2 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 2 |
| Position lamp switch faulty |1.1.4a| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Brake cable badly frayed |3.2.A1b| | 2 |
| Handlebar mounting clamp loose |2.1.1a| | 2 |
| Front Brake lever is inoperative |3.1.3c| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 2 |
| Brake locking device insecure |3.2.A1e| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Fuel tank leaking |7.2.1a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Offside Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Sidecar wheel bearings have excessive free play |5.2.3c| | 1 |
| Front Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Front Steering lock stop loose |2.1.3| | 1 |
| Front Front suspension assembly component missing |2.3.1| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Nearside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Brake locking device insecure Spline fitment loose |3.2.A1e| | 1 |
| Front Brake back plate|s| insecure |3.2.A1j| | 1 |
| Rear Brake lever attachment screws loose |3.1.2b| | 1 |
| Front Brake lever attachment screws loose |3.1.2b| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Front Brake back plate|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 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 |
| Registration plate issues | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Nearside Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 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 Footrest insecure moved from vertical to horizontal |6.2.1a| | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Nearside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Rear Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Offside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Horn replaced by a bell |1.7.3b| | 1 |
| Rear Rear suspension component loose rear swing arm excessive play |2.4.A.1a| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| All position lamps not working |4.2.1 |a|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Rear Wheel more than one fixing loose Can???t check wheel bearing play |5.2.1 |a| |ii|| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear Fuel system component insecure |7.2.1b| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front wheel insecure |4.2.3b| | 1 |
| Brake lever mounting insecure |3.1.2a| | 1 |
| Centre Front Horn not working |1.7.3a| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |