| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 35 |
| Registration plate issues | 15 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 14 |
| Rear reflector on motorcycle missing |1.4.1| | 11 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 10 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 10 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 9 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Steering headbearing has excessive free play |2.2.2| | 7 |
| Horn not working |1.7.3a| | 7 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Drive chain excessively loose |6.2.1d| | 6 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 5 |
| Drive chain worn to excess |6.2.1e| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 4 |
| Direction indicators not working |1.5.1c| | 3 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Fuel tank leaking |7.2.1a| | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| 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| | 2 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 2 |
| Brake performance not tested |3.3| | 2 |
| An item not tested |Manual| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 2 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Offside Handlebar deformed |2.1.1b| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 2 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Front Direction indicators not working |1.5.1c| | 2 |
| Rear Direction indicators not working |1.5.1c| | 2 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Front Brake component is severely distorted |3.1.5| | 1 |
| Nearside Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Nearside Indicator tell tale not functioning |1.5.2| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Drive chain excessively tight |6.2.1d| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Offside Rear Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Offside Rear Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Offside Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Steering lock stop loose |2.1.3| | 1 |
| Nearside Front Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Offside Front Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Offside Direction indicator adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Brake hose excessively deteriorated | 1 |
| Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Centre Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Centre Rear Rear spring worn and seriously weakened |2.4A1b|ii|| | 1 |
| Centre Rear Rear position lamp insecure |1.1.1c| | 1 |
| Centre Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Offside Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Nearside Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Offside Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Rear Brake pipe inadequately supported |3.2.B2b| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Parking brake efficiency below requirements |3.7.B.7| | 1 |
| Parking brake lever has no reserve travel |3.1.6b| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Offside Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Rear suspension component loose |2.4.A.1a| | 1 |
| Headlamp incorrect colour |1.2.1| | 1 |
| Offside Rear Brake locking device missing |3.2.A1e| | 1 |
| Centre Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Brake component leaking fluid |3.2.B4| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.4 |a|| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Centre Front Upper Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Centre Front Upper Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Footrest missing both rear |6.2.1a| | 1 |
| Offside Front Brake hose excessively twisted |3.2.B3a| | 1 |
| Offside Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Horn emits 2 or more alternating tones |1.7.3b| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Offside Front Brake component damaged and seriously reduced in strength |3.2.A1| | 1 |
| Front wheel spindle securing nut locking device insecure |2.3.3a| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Rear All direction indicators obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Front Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Front Wheel bearing play so excessive that directional control is impaired |5.1.3 |a| |ii|| | 1 |
| Rear Brake caliper inadequately mounted |1.1.16 |c| |i|| | 1 |
| Nearside Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Roller brake test brake efficiency less than 27.5% overall (1.2.2 (a) (ii)) | 1 |
| Front Stop lamp remains on when the brake is released sticks on |1.3.1e| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Fuel tank leaking |7.2.1a| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Central Front Lower Brake lagging in operation (1.2.1 (d)) | 1 |
| Central Rear Upper All direction indicators obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Nearside Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Brake pipe excessively damaged |3.2.B2a| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake hose excessively twisted |3.2.B3a| | 1 |
| Front Brake hose excessively kinked |3.2.B3a| | 1 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Central Rear Suspension arm ball joint excessively worn |5.3.4 |a| |i|| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Brake locking device insecure rear caliper brace arm bolt loose |3.2.A1e| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Front Upper Direction indicators not working |1.5.1c| | 1 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Front Headlamp switch faulty |1.2.4| | 1 |
| Front Front position lamp insecure |1.1.1c| | 1 |
| Brake caliper|s| insecure |3.2.A1j| | 1 |
| Offside Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Offside Front Lower Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Nearside Front suspension assembly component cracked |2.3.1| | 1 |
| Rear Brake back plate|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Front position lamp missing |1.1.1a| | 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 |