| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 33 |
| Registration plate issues | 33 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 12 |
| 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| | 12 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 10 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 9 |
| Headlamp aim beam image kick up to the offside |1.6| | 9 |
| Horn not working |1.7.3a| | 6 |
| Rear reflector on motorcycle missing |1.4.1| | 6 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 6 |
| Rear Brake excessively binding (1.2.1 (f)) | 5 |
| Registration plate lamp issues | 4 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear Brake excessively binding |1.2.1 |f|| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Horn not working |1.6.2a| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Nearside Handlebar handgrip missing |2.1.1c| | 2 |
| Offside Handlebar handgrip missing |2.1.1c| | 2 |
| Front Brake disc|s| cracked |3.2.A1g| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Brakes imbalanced across an axle | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Roller brake test brake efficiency less than 27.5% overall |1.2.2 |a| |ii|| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Nearside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Offside 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 |
| Rear Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Parking brake: efficiency below requirements |3.7.C.1b| | 1 |
| Centre Brake pipe modified and seriously weakened flexible brake hose missing near swinging arm pivot |3.6.A.3| | 1 |
| Brake hose damaged | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Wheel spindle locking device missing (5.2.1 (d)) | 1 |
| Rear Exhaust has a major leak of exhaust gases pipe (6.1.2 (a)) | 1 |
| Front Position lamp missing (4.2.1 (a)) | 1 |
| Nearside Rear Lower Shock absorber insecurely attached nut insecure (5.3.2 (a) (i)) | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Rear Stop lamp not working |1.2.1b| | 1 |
| front brake binding |3.7.B.1| | 1 |
| Nearside Rear Valve stem seriously damaged |4.1.D.1e| | 1 |
| Offside Rear Valve stem seriously damaged |4.1.D.1e| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Stop lamp not working front control (4.3.1 (a) (ii)) | 1 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Brake hose leaking fluid |3.2.B4| | 1 |
| 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)) | 1 |
| Front Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Front Brake caliper insecure (1.1.16 (c) (i)) | 1 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 1 |
| Offside Rear Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Rear Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Offside Rear Lower Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Brake lever has restricted free movement (1.1.15 (e)) | 1 |
| Rear Stop lamp not working switch (4.3.1 (a) (ii)) | 1 |
| Central Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Central Front Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Headlamp aim beam image kick up to the offside Headlamp taped to ???correct??? dip |1.6| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Fuel pipe union leaking Fuel tank junction |7.2.1a| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear brake binding | 1 |
| Centre Stop lamp not working |1.2.1b| | 1 |
| Parking brake lever releases when knocked |3.1.6a| | 1 |
| Nearside Rear Lower Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Rear Stop lamp not working |1.2.1b| | 1 |
| Offside Rear Stop lamp not working |1.2.1b| | 1 |
| Centre Rear Stop lamp not working |1.2.1b| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Nearside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Parking brake lever has no reserve travel |3.1.6b| | 1 |
| Nearside Front Direction indicators not working |1.4.A.2c| | 1 |
| Hazard warning switch missing |1.4.B.1d| | 1 |
| Offside Brake pipe inadequately supported |3.6.B.1| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Wheel fixing loose (single fixing) (5.2.1 (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 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 fluid reservoir insecurely mounted |3.2.B1a| | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Wheel more than one fixing loose front wheel incorrectly fitted |5.2.1 |a| |ii|| | 1 |
| Offside 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|| | 1 |
| Fuel system component leaking right side of fuel tank (6.1.3 (b) (i)) | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Rear Trikes, quads or pre-68 vehicles, service brake efficiency below requirements (3.7.C.1a) | 1 |
| Rear Parking brake efficiency below requirements (3.7.C.1b) | 1 |
| Direction indicators adversely affected by the operation of another lamp (1.4.A.2h) | 1 |
| Direction indicators have less than 50% of the light sources illuminating (1.4.A.2c) | 1 |
| Direction indicators have a product on the lenses so they are not visible from a reasonable distance (1.4.A.2e) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Nearside Front Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Rear Exhaust has part of the system missing |7.1.1a| | 1 |
| Rear Brake grabbing severely |1.2.1 |c|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Centre Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Centre Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Brake pipe union leaking fluid |3.2.B4| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Offside Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Brake pedal has insufficient reserve movement |3.3.A.5| | 1 |
| Offside Front Hazard warning lamps not flashing in phase, with ignition on |1.4.B.1f| | 1 |
| Offside Rear Direction indicator not working |1.4.A.2c| | 1 |
| Offside Rear wheel bearing has excessive play |2.6.2| | 1 |
| Rear Seat insecure |6.2.1a| | 1 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Exhaust excessively deteriorated |7.1.1a| | 1 |