| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 21 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 16 |
| Steering headbearing has excessive free play |2.2.2| | 9 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 7 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 6 |
| Registration plate issues | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 4 |
| Front Steering headbearing has excessive free play |2.2.2| | 4 |
| Direction indicators not working |1.5.1c| | 4 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 3 |
| Horn not working |1.7.3a| | 3 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Rear position lamp insecure |1.1.1c| | 2 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 2 |
| Offside Rear Direction indicator damaged and function impaired |1.5.3a| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear Rear position lamp damaged and function impaired |1.1.1b| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Exhaust system insecure (6.1.2 (a)) | 2 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Exhaust mounting missing |7.1.1c| | 2 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Nearside Rear Footrest insecure |6.2.1a| | 2 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Nearside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Nearside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Offside Steering lock stop ineffective |2.1.3| | 2 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 2 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 2 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Nearside Steering lock stop ineffective |2.1.3| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Rear Front mudguard insecure |2.3.7| | 2 |
| Front Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Front Upper Motorcycle structure excessively damaged |6.1.1a| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Front Stop lamp does not illuminate by the operation of both brake controls Brake light does not illuminate when operating front brake lever (4.3.2 (a) (iii)) | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Nearside Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Brake lever is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Front Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Front Throttle operating incorrectly |6.2.1f| | 1 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Centre Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Centre Front Lower Direction indicators not working |1.5.1c| | 1 |
| Inner Front Upper Horn control not functioning. |1.7.2b| | 1 |
| Nearside Rear Upper Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Nearside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Footrest insecure |6.2.1a| | 1 |
| Rear Rear position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Offside Rear Lower Brake locking device insecure |3.2.A1e| | 1 |
| Inner Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Front suspension assembly component excessively bent |2.3.1| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Brake pipe excessively corroded | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Centre Rear Lower Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Offside Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Front Brake lagging in operation |1.2.1 |d|| | 1 |
| Rear Brake hose leaking contamination from brake fluid noted |1.1.12 |c|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Front Brake pipe excessively chafed |3.2.B2a| | 1 |
| Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Vehicle identification number not permanently displayed |6.3.5a| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Headlamp aim not tested |1.6| | 1 |
| Offside An item not tested |Manual| | 1 |
| An item not tested |Manual| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Fairings so located that it is likely to impede the steering refit front fairing |2.1.2e| | 1 |
| Centre Front Front suspension assembly has excessive free play in the pivot bearings. |2.3.2| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Front Steering lock stop ineffective |2.1.3| | 1 |
| Offside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 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 |
| Front Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Rear Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Front Front suspension assembly component cracked |2.3.1| | 1 |
| Rear Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Rear position lamp incorrect colour |1.1.2b| | 1 |
| Offside Rear Upper Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Lower Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Offside Front Lower Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Throttle operating incorrectly THROTTLE STICKS. BIKE CREEPS FORWARD |6.2.1f| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Lower Rear suspension bush has excessive free play engine mounts |2.4.A2a|i|| | 1 |
| Front Lower Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 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 Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |