| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 25 |
| Headlamp aim out of alignment | 23 |
| Registration plate issues | 20 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 14 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 12 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 8 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 7 |
| Steering headbearing has excessive free play |2.2.2| | 7 |
| Fuel cap sealing washer missing |7.2.2c| | 6 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 6 |
| Horn not working |1.7.3a| | 6 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 6 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Riders seat insecure |6.2.1a| | 5 |
| Rear reflector on motorcycle obscured |1.4.1| | 5 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Rear reflector missing (4.8.2 (a) (ii)) | 5 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Registration plate lamp issues | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 3 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition (8.1.1 (a)) | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Stop lamp emits other than a steady red light |1.3.1b| | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Indicator tell tale not operating correctly |1.5.2| | 3 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Nearside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Rear position lamp incorrect colour |1.1.2b| | 2 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Exhaust system insecure (6.1.2 (a)) | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Rear reflector on motorcycle dirty and function impaired |1.4.2a| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Headlamp insecure (4.1.1 (c)) | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Brake disc contaminated (1.1.14 (b)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 2 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 2 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Stop lamp not working with rear brake control (4.3.1 (a) (ii)) | 1 |
| Fuel cap ineffective seal missing (6.1.3 (b) (i)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Shock absorber has a serious fluid leak Front left hand suspension leaking (5.3.2 (b)) | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear position lamp insecure lense |1.1.1c| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake lever has inadequate reserve travel front brake lever cannot operatate fully through its travel because after market oversized throttle fitted |3.1.3b| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Front Lower All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Centre Riders seat insecure |6.2.1a| | 1 |
| Centre Exhaust mounting does not fully support the exhaust system bolts and spacers missing |7.1.1.c| | 1 |
| Handlebar handgrip not secure to handlebars. left hand |2.1.1c| | 1 |
| Rear Brake component insecure brake hose (1.1.21 (c)) | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Front Direction indicators flashing less than 60 times a minute indicators flash ok,but direction arrows facing the wrong way |1.5.1c| | 1 |
| Front Brake hose excessively stretched trapping in steering (1.1.12 (b) (ii)) | 1 |
| Steering operation linkage fouling when handlebars turned from lock to lock (2.1.4 (a)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Wheel alignment incorrect which adversely affects the handling Misaligned forks. (2.4 (a)) | 1 |
| Rear position lamp adversely affected by the operation of another lamp Rear position lamp dims when dipped beam is selected. |1.1.3b| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Central Front Inner Fairings so located that it is likely to impede the steering undertray loose |2.1.2e| | 1 |
| Central Front Upper Fairings insecure and likely to impede the steering front fairing loose |2.1.2e| | 1 |
| Nearside Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Rear Wheel damaged significantly reducing the original strength engine damage casing rubbing wheel |4.2.1a| | 1 |
| Front Front shock absorber seal failed and leaking oil both front shockers leaking fluid on to brake disc |2.3.3| | 1 |
| Offside Rear Exhaust mounting does not fully support the exhaust system rubbing rear wheel |7.1.1.c| | 1 |
| Stop lamp does not illuminate immediately a brake applies front |1.3.1a| | 1 |
| Stop lamp does not illuminate immediately a brake applies rear |1.3.1a| | 1 |
| Clutch lever bent so it cannot be readily operated. |6.2.1g| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.4 |a|| | 1 |
| Steering operation restricted in free movement from lock to lock |2.1.4 |c|| | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Nearside Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Nearside Rear Brake component inadequately mounted hose |1.1.21 |c|| | 1 |
| Front Shock absorber has negligible damping effect bottoming |5.3.2 |b|| | 1 |
| Front Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Roller brake test No brake control achieves an efficiency of 30% |1.2.2 |a| |i|| | 1 |
| Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Stop lamp does not illuminate immediately a brake applies front brake lever |1.3.1a| | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 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 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear wheel rotation likely to be impeded airbox / rear fender insecure |6.2.1b| | 1 |
| Motorcycle structure joining/attachment plate or fastening insecure rear fender |6.1.1 |b| |i|| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil fork seal |2.3.3| | 1 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Brake lever attachment screws missing |3.1.2b| | 1 |
| Front Upper Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Brake pipe inadequately supported |3.2.B2b| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Position lamp likely to become detached (4.2.1 (c) (ii)) | 1 |
| Fuel system component leaking (6.1.3 (b) (i)) | 1 |
| Fuel pipe damaged (6.1.3 (c) (ii)) | 1 |
| Central Front Riders seat insecure |6.2.1a| | 1 |
| Front 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 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Upper Exhaust is leaking and excessively noisey HEAD BOLTS LOOSE |7.1.1b| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Nearside Rear Lower Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front Upper Direction indicators not working |1.5.1c| | 1 |
| Rear Upper Direction indicators not working |1.5.1c| | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected (5.2.1 (c) (ii)) | 1 |
| Central Rear Stop lamp not working both hand levers |4.3.1 |a| |ii|| | 1 |
| Lower Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Brake hose fouling fouling on steering |3.2.B3b| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies faulty brake switch |1.3.1a| | 1 |
| Rear Brake lagging in operation (1.2.1 (d)) | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies brake |1.3.1a| | 1 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Decelerometer brake test the less effective brake control does not achieve an efficiency of 25%. |3.3.E1b| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Rear position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Wheel damaged significantly reducing the original strength |4.2.1a| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Rear Brake lever is positioned so that the brake cannot be readily applied fouling light switch |3.1.3c| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Offside Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Centre Front Handlebar mounting clamp loose |2.1.1a| | 1 |
| Nearside Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Front Stop lamp does not illuminate immediately a brake applies brake |1.3.1a| | 1 |