| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 53 |
| Registration plate issues | 26 |
| Rear reflector on motorcycle missing |1.4.1| | 24 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 16 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 12 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Drive chain excessively loose |6.2.1d| | 11 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 10 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 10 |
| Horn not working |1.7.3a| | 9 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 8 |
| Registration plate lamp issues | 8 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 8 |
| Drive chain excessively tight |6.2.1d| | 7 |
| Steering headbearing has excessive free play |2.2.2| | 7 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 7 |
| 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| | 6 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 6 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 5 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 5 |
| Offside Front Footrest insecure |6.2.1a| | 5 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Rear 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| | 4 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 4 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 4 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 3 |
| Exhaust excessively deteriorated |7.1.1a| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 3 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Rear Footrest insecure |6.2.1a| | 3 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Brake hose damaged | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Offside Front Direction indicator insecure |1.5.3b| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Nearside Front Footrest insecure |6.2.1a| | 2 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Front Position lamp not working |4.2.1 |a|| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Rear shock absorber has inadequate damping effect. NO DAMPING! |2.4.A.3b| | 1 |
| Nearside Rear Direction indicator with a multiple light source more than 1/2 not functioning (4.4.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 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 |
| Offside Front Upper Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Lower Drive chain excessively tight |6.2.1d| | 1 |
| Offside Outer Front Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Rear Lower Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Upper Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Lower Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Front Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Offside Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Wheel spindle loose (5.2.1 (c) (i)) | 1 |
| Front All position lamps not working |4.2.1 |a|| | 1 |
| Rear Lower Brake caliper excessively weakened by corrosion (1.1.16 (d) (i)) | 1 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Stop lamp does not illuminate immediately a brake applies bulb blown |1.3.1a| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Headlamp dipped beam flickers when tapped lightly by hand |1.2.2c| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Front Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Headlamp deteriorated and function impaired effected by engine revs |1.2.3a| | 1 |
| Rear Brake lagging in operation (1.2.1 (d)) | 1 |
| Nearside Front Drive chain excessively loose |6.2.1d| | 1 |
| Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Direction indicator insecure |1.5.3b| | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Horn missing |1.7.1| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Brake hose excessively deteriorated | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Offside Rear Lower Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 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 Brake hose excessively stretched (1.1.12 (b) (ii)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Headlamp incorrect colour (4.1.4 (a)) | 1 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| Headlamp reflector seriously defective (4.1.1 (b) (ii)) | 1 |
| Rear Footrest insecure (6.2.12 (a)) | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Stop lamp not working intermitant. |4.3.1 |a| |ii|| | 1 |
| Offside Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Upper Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Nearside Rear Lower Drive chain excessively loose |6.2.1d| | 1 |
| Offside Rear Lower Exhaust mounting missing |7.1.1c| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen has a double beam |4.1.2 |a|| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies refit switch wires |1.3.1a| | 1 |
| Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Rear Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Offside An item not tested |Manual| | 1 |
| Nearside An item not tested |Manual| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 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 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Floor brake test indicates a binding brake cannot check front wheel bearings due to binding |3.3.C2c| | 1 |
| Brake lever insecure loose on clamp |3.1.2a| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Nearside Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Offside Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 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 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Headlamp aim beam image too far to the left |1.6.4| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Offside Front Handlebar grip insecure to handlebar throttle / switch gear insecure to bar (2.2.1 (d) (ii)) | 1 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Motorcycle structure excessively corroded Torque Arm |6.1.1a| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Headlamp aim beam image kick up to the offside beam image poor |1.6| | 1 |
| Nearside Front Footrest missing |6.2.1a| | 1 |
| Rear suspension bush has excessive free play rear swinging arm |2.4.A2a|i|| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Brake locking device insecure |3.2.A1e| | 1 |
| An item not tested |Manual| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Offside Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Rear Brake component damaged and seriously reduced in strength |3.2.A1| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front Brake hose excessively kinked |3.2.B3a| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Steering lock stop missing |2.1.3| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Rear Lower Suspension component pin or bush excessively worn |5.3.4 |a| |i|| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear mono-shock pivot excessively worn shocker lower bush onto lower monoshock link |2.4.B.4| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front shock absorber seal failed and leaking oil r/h |2.3.3| | 1 |
| Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |