| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 31 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 18 |
| Steering headbearing has excessive free play |2.2.2| | 18 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 9 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Rear reflector on motorcycle missing |1.4.1| | 8 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 8 |
| Nearside Rear Direction indicator not working |1.5.1c| | 7 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 7 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 6 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 6 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 6 |
| Front Steering headbearing has excessive free play |2.2.2| | 6 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 5 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 5 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 4 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 4 |
| Registration plate issues | 4 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Steering linkage has excessive free play |2.2.2| | 3 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 3 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Offside Rear Direction indicator insecure |1.5.3b| | 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 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 3 |
| 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| | 3 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Front suspension has inadequate damping effect. |2.3.6c| | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Rear Direction indicators not working |1.5.1c| | 2 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| An item not tested |Manual| | 2 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 2 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 2 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 2 |
| Rear Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Horn not working |1.7.3a| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Indicator tell tale not functioning |1.5.2| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 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 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 2 |
| Nearside Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Front Upper Steering lock stop missing |2.1.3| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Nearside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Offside Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Lower Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Centre Front Handlebar mounting clamp loose |2.1.1a| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Offside Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil (2.3.3) | 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 |
| Centre Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Nearside Front Steering lock stop missing |2.1.3| | 1 |
| Offside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear Footrest insecure |6.2.1a| | 1 |
| Offside Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Front Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Decelerometer brake test the less effective brake control does not achieve an efficiency of 25%. |3.3.E1b| | 1 |
| Offside Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Front Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front An item not tested |Manual| | 1 |
| Rear An item not tested |Manual| | 1 |
| Rear Brake performance not tested |3.3| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Nearside Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Nearside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Brake pipe union leaking fluid |3.2.B4| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Centre Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Front Leg shield insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Front position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Exhaust markings indicating not for road use or similar wording std pipe fitted time test (6.1.2 (c)) | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Centre Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear spring corroded and seriously weakened |2.4A1b|ii|| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Offside Steering lock stop missing |2.1.3| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Rear Rear position lamp missing |1.1.1a| | 1 |
| Rear Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Brake pipe excessively corroded | 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 |
| Headlamp switch faulty |1.2.4| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Rear Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Brake master cylinder severely damaged |3.2.B1b| | 1 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Nearside Front Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Front suspension assembly component excessively bent |2.3.1| | 1 |
| Nearside Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Rear Brake lever attachment screws loose |3.1.2b| | 1 |
| Front Fork yoke deformed |2.1.1b| | 1 |
| Rear suspension has severe distortion of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Motorcycle structure excessively damaged |6.1.1a| | 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 |
| Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Brake pipe inadequately supported |3.2.B2b| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Front Brake lever is inoperative |3.1.3c| | 1 |
| Rear Steering linkage has excessive free play |2.2.2| | 1 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |
| Stop lamp does not illuminate immediately a brake applies Rear switch |1.3.1a| | 1 |