| Most common failures | No# failures |
|---|
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 32 |
| Rear reflector on motorcycle missing |1.4.1| | 20 |
| Horn not working |1.7.3a| | 16 |
| Headlamp aim out of alignment | 13 |
| Steering headbearing has excessive free play |2.2.2| | 11 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 11 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 9 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 8 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 8 |
| Nearside Front Direction indicator not working |1.5.1c| | 8 |
| Registration plate issues | 7 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 6 |
| 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 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 5 |
| Headlamp aim not tested |1.6| | 5 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 5 |
| Direction indicators not working |1.5.1c| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Offside Front Direction indicator not working |1.5.1c| | 5 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Riders seat insecure |6.2.1a| | 4 |
| Rear position lamp incorrect colour |1.1.2b| | 4 |
| Nearside Rear Direction indicator not working |1.5.1c| | 4 |
| Stop lamp emits other than a steady red light |1.3.1b| | 3 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 3 |
| Front Direction indicator not working |1.5.1c| | 3 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 3 |
| Offside Front Direction indicators not working |1.5.1c| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Front Horn not working |1.7.3a| | 3 |
| Fuel cap sealing washer missing |7.2.2c| | 3 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 3 |
| Rear reflector on motorcycle obscured |1.4.1| | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Rear Direction indicator not working |1.5.1c| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 2 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 2 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 2 |
| Nearside Rear Footrest insecure |6.2.1a| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Nearside Rear Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 2 |
| Rear Direction indicator missing |1.5.1a| | 2 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Brake lever insecure |3.1.2a| | 2 |
| Front Brake lever mounting insecure |3.1.2a| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Offside Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Rear Brake lever mounting insecure |3.1.2a| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Rear reflector on motorcycle insecure replaced |1.4.2c| | 1 |
| Fuel cap sealing washer torn |7.2.2c| | 1 |
| Rear Brake lever insecure |3.1.2a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Brake hose excessively kinked |3.2.B3a| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Fairing so located that it is likely to impede the steering |2.1.2e| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front wheel spindle loose |2.3.3a| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Drive belt excessively tight |6.2.1d| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Brake lever attachment screws loose |3.1.2b| | 1 |
| 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| | 1 |
| Centre Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Rear suspension component seized |2.4A2a|ii|| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Rear Brake lever cracked |3.1.2c| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Offside Front Upper Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Front Lower Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Rear Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Rear mono-shock insecure |2.4.B.4| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam no dipped beam bulb blown
|1.2.2a|i|| | 1 |
| Front Horn not working |7.7 |a| |ii|| | 1 |
| Headlamp at least one does not illuminate on dipped beam dip and main beam light on dash reversed |1.2.2a|i|| | 1 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Nearside Brake lever insecure |3.1.2a| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Front suspension assembly component excessively bent |2.3.1| | 1 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Offside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Brake hose excessively deteriorated | 1 |
| Rear Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Steering movement excessively stiff with the wheel raised (2.2.1b) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Headlamp at least one does not illuminate on dipped beam (1.2.2a(i)) | 1 |
| Nearside Indicator switch does not operate the direction indicators on the side selected (1.5.4) | 1 |
| Front Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.5.1) | 1 |
| Rear shock absorber has inadequate damping effect. (2.4.A.3b) | 1 |
| Nearside Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Nearside Front Upper Direction indicator not working (4.4.1 (a) (ii)) | 1 |