| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 19 |
| Registration plate issues | 12 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Horn not working |1.7.3a| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 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| | 2 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 2 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Offside Rear Wheel excessively distorted (5.2.2 (c) (i)) | 1 |
| Nearside Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Offside Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Nearside Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear suspension has a modification which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| An item not tested |Manual| | 1 |
| Rear suspension bush excessively deteriorated both upper rear shock bushes |2.4.A2a|i|| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Drive belt excessively tight |6.2.1d| | 1 |
| Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Offside Brake cylinder insecurely mounted |3.2.B1a| | 1 |
| Nearside Front Brake hose excessively twisted |3.2.B3a| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear reflector on sidecar missing |1.4.1| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Nearside Front Indicator switch does not operate the direction indicators on the side selected |1.5.4| | 1 |
| Front Direction indicator obscured |1.5.1a| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Fuel cap sealing washer torn |7.2.2c| | 1 |
| Offside Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Fuel system component leaking |7.2.1a| | 1 |
| Brake linkage has abnormal movement due to excessive wear |3.2.A1i| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Front Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Nearside Front Brake component leaking fluid |3.2.B4| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Suspension arm pin or bush excessively worn swingarm pivot bush/bearing has excessive side to side play (5.3.4 (a) (i)) | 1 |
| Rear Brake cylinder has no reserve travel and braking performance affected rear brake pedal needs to be pumped up each time used to build pressure. (1.1.16 (e) (ii)) | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Offside Steering lock stop missing |2.1.3| | 1 |
| Front Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Centre Rear Riders seat insecure |6.2.1a| | 1 |
| Nearside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Nearside Front Horn control not readily accesible. |1.7.2a| | 1 |
| Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Central Front Horn not working (7.7 (a) (ii)) | 1 |
| Fuel system component leaking |6.1.3 |b| |i|| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Brake linkage has abnormal movement due to excessive wear |3.2.A1i| | 1 |
| Offside Front Brake cylinder insecurely mounted |3.2.B1a| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Steering lock stop missing |2.1.3| | 1 |
| Offside Front Steering lock stop missing |2.1.3| | 1 |
| Offside Front Upper Brake lever is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Nearside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Offside Rear Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 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 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |