| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 38 |
| Registration plate issues | 29 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 17 |
| Rear reflector on motorcycle missing |1.4.1| | 16 |
| Horn not working |1.7.3a| | 12 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 10 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 10 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 6 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 5 |
| Drive chain excessively tight |6.2.1d| | 5 |
| Drive chain excessively loose |6.2.1d| | 5 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Fuel system component leaking |7.2.1a| | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Headlamp insecure |1.2.3b| | 4 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Registration plate lamp issues | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 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 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Front Throttle operating incorrectly |6.2.1f| | 2 |
| 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| | 2 |
| Offside Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Nearside Front Direction indicator missing |1.5.1a| | 2 |
| Offside Front Direction indicator missing |1.5.1a| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Nearside Front Headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Offside Front Headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Brake hose excessively kinked |3.2.B3a| | 1 |
| Rear Brake caliper leaking |1.1.16 |b| |i|| | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Direction indicator obscured |1.5.1a| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Nearside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Lower Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Steering headbearing in such a condition that steering control is adversely affected |2.2.2 |f| |ii|| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies No front brake switch fitted |1.3.1a| | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Vehicle identification number not displayed |0.2 |a|| | 1 |
| Rear Direction indicator obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Steering linkage component insecure steering stop |2.1.3 |a| |i|| | 1 |
| Offside Front Steering lock stop missing |2.1.3| | 1 |
| Front Braking system does not have an approriate system/s fitted according to its age |3.1.1| | 1 |
| Front Brake performance not tested |3.3| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Centre Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Front Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Front Upper Brake pipe excessively chafed |3.2.B2a| | 1 |
| Steering lock stop missing |2.1.3| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies Rear brake pedal. |1.3.1a| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Front Brake locking device insecure |3.2.A1e| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Brake pipe union leaking fluid |3.2.B4| | 1 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Offside Front Indicator switch insecure |1.5.4| | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Offside Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Brake hose fouling |3.2.B3b| | 1 |
| Motorcycle structure cracked |6.1.1a| | 1 |
| Nearside Steering lock stop missing |2.1.3| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Rear Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Brake component defective due to a deliberate modification which significantly reduces the original strength |3.1.5| | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Brake component is excessively corroded |3.1.5| | 1 |
| Position lamp switch does not operate the front and rear position lamps |1.1.4c| | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Nearside Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Centre Front Front position lamp missing |1.1.1a| | 1 |
| Offside Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Centre Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Headlamp aim headlamp damaged and function impaired |1.2.3a| | 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 |
| Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Rear Brake pipe inadequately supported |3.2.B2b| | 1 |
| Rear Chain guard insecure |6.2.1c| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| An item not tested |Manual| | 1 |
| Rear Brake pedal mounting insecure |3.1.2a| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Horn missing |1.7.1| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Front position lamp does not illuminate immediately when switched on dip light |1.1.3a| | 1 |
| Centre Fuel system component insecure fuel pipes missing clips |7.2.1b| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Brake lever is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Front Brake hose fouling |3.2.B3b| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Offside Front Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Rear Lower Brake reaction bracket insecure |3.2.A1j| | 1 |
| Offside Rear Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies loose conection front brake light switch |1.3.1a| | 1 |
| Offside Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Brake performance not tested both calipers sticking on/possibly wrong pads fitted (1.2.1 (g)) | 1 |
| Centre Front Front suspension spring worn and seriously weakened |2.3.2b| | 1 |