| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 23 |
| Headlamp aim out of alignment | 19 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Registration plate issues | 6 |
| Horn not working |1.7.3a| | 6 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Drive chain excessively loose |6.2.1d| | 5 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Brake disc|s| cracked |3.2.A1g| | 2 |
| Brake pedal insecure |3.1.2a| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Nearside Motorcycle structure cracked |6.1.1a| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Offside Front wheel spindle securing nut locking device insecure |2.3.5a| | 1 |
| Nearside Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Front Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Offside Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Front Brake disc fractured |1.1.14 |a| |ii|| | 1 |
| Front brake disc in such a condition that it is seriously weakened | 1 |
| Rear Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Fairing so located that it is likely to impede the steering |2.1.2e| | 1 |
| Nearside Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Nearside Rear Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Nearside Front Brake component leaking fluid |3.2.B4| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Stop lamp does not illuminate immediately a brake applies Front lever |1.3.1a| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Fuel cap mounting flange/sealing method defective |7.2.2c| | 1 |
| Offside Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Central Front Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Nearside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Brake pipe inadequately supported |3.2.B2b| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Brake performance not tested |3.3| | 1 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear Brake master cylinder has an excessively worn master cylinder pivot. |3.2.B5| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Front Brake component leaking fluid |3.2.B4| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Wheel spindle or securing nut|s| so insecure that wheel security or steering control is adversely affected |5.2.1 |c| |ii|| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Offside Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Brake fluid significantly below minimum mark |1.1.10 |d| |ii|| | 1 |
| Drive chain sprocket excessively loose rear sprocket carrier bearing worn out |6.1.7 |c| |i|| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front suspension assembly component excessively bent |2.3.1| | 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 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Front Lower Rear suspension component loose |2.4.A.1a| | 1 |
| Nearside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Offside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected (5.2.1 (c) (ii)) | 1 |
| Rear Brake caliper inadequately mounted and braking performance affected linkage bolts too short (1.1.16 (c) (ii)) | 1 |
| Rear Brake pedal so insecure that the brake cannot be readily applied bolt loose (1.1.2 (e) (ii)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Rear Suspension component pin or bush excessively worn suspension linkage (5.3.4 (a) (i)) | 1 |
| Fork yoke insecure slight play adjusted (2.2.2 (d) (i)) | 1 |
| Front Inner Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Wheel fixing missing (single fixing) no split pin fitted axil spindle nut (5.2.1 (a) (ii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear Brake lever pivot excessively tight (1.1.1 (a)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Brake component insecure reaction arm loose bolts (1.1.21 (c)) | 1 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 1 |