| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 40 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 30 |
| Registration plate issues | 20 |
| Steering headbearing has excessive free play |2.2.2| | 16 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 16 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 16 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 15 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 15 |
| Rear reflector on motorcycle missing |1.4.1| | 14 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 12 |
| Front wheel bearings are excessively rough |2.3.5b| | 11 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 10 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 9 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 8 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 8 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Front wheel bearings have excessive free play |2.3.5b| | 7 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Horn not working |1.7.3a| | 6 |
| Headlamp insecure |1.2.3b| | 6 |
| Headlamp aim beam image kick up to the offside |1.6| | 6 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 5 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 5 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 5 |
| 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| | 4 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Nearside Steering lock stop ineffective |2.1.3| | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Offside Steering lock stop missing |2.1.3| | 4 |
| Nearside Steering lock stop missing |2.1.3| | 4 |
| Riders seat insecure |6.2.1a| | 3 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Indicator switch insecure |1.5.4| | 3 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 3 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 3 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 3 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 3 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 3 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 3 |
| Rear mono-shock pivot seized |2.4.B.4| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Exhaust has part of the system missing |7.1.1a| | 2 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 2 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Offside Steering lock stop ineffective |2.1.3| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 2 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Rear wheel insecure |4.2.3b| | 2 |
| Front Steering lock stop missing |2.1.3| | 2 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Indicator switch does not operate the direction indicators on the side selected |1.5.4| | 2 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 2 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 2 |
| Handlebar mounting clamp loose |2.1.1a| | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Seat insecure |6.2.1a| | 2 |
| Offside Rear Direction indicator insecure |1.5.3b| | 2 |
| Brake performance not tested |3.3| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Offside Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Centre Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Stop lamp does not illuminate immediately a brake applies stop light does not work |1.3.1a| | 1 |
| Nearside Rear Lower Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Centre Rear Lower Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Centre Rear Lower Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Front Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Front Steering lock stop ineffective |2.1.3| | 1 |
| Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Rear Rear position lamp incorrect colour |1.1.2b| | 1 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Nearside Indicator switch insecure |1.5.4| | 1 |
| Front Leg shield so located that it is likely to impede the steering |2.1.2e| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Leg shield insecure and likely to impede the steering |2.1.2e| | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Front Upper Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Nearside Front Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear wheel has a missing wheel bolt|s| |4.2.3a| | 1 |
| Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Nearside Headlamp switch insecure |1.2.4| | 1 |
| An item not tested |Manual| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Fairing so located that it is likely to impede the steering |2.1.2e| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Nearside Front Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Offside Front Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Centre Riders seat insecure |6.2.1a| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Front Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Centre Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Lower Exhaust has part of the system missing |7.1.1a| | 1 |
| Offside Front Upper Brake lever mounting insecure |3.1.2a| | 1 |
| Nearside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Offside Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Offside Front All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Shock absorber has a serious fluid leak both forks |5.3.2 |b|| | 1 |
| Rear Brake hose excessively kinked |3.2.B3a| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Rear Front mudguard insecure |2.3.7| | 1 |
| Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Offside Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Rear Rear position lamp missing |1.1.1a| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Nearside Headlamp insecure |1.2.3b| | 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 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Nearside Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Floor brake test Neither brake control achieves an efficiency of 25% |3.3.C1b| | 1 |
| Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Front Lower Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Nearside 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 Front 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 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Brake cylinder insecurely mounted |3.2.B1a| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Steering movement excessively stiff with the wheel raised right hand lock |2.2.1b| | 1 |
| Exhaust mounting missing end can strap |7.1.1c| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Offside Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Inner Front Lower Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Inner Rear Lower Rear wheel insecure |4.2.3b| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Offside Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear mono-shock insecure |2.4.B.4| | 1 |
| Nearside Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Fuel pipe union leaking |7.2.1a| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |