| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 35 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 20 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 14 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 11 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 10 |
| Horn not working |1.7.3a| | 10 |
| Registration plate issues | 9 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 9 |
| Throttle operating incorrectly |6.2.1f| | 8 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Drive chain excessively loose |6.2.1d| | 7 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Front suspension has inadequate damping effect. |2.3.6c| | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Brake hose damaged | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Offside Rear Footrest insecure |6.2.1a| | 3 |
| Nearside Rear Footrest insecure |6.2.1a| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Nearside Front Direction indicator insecure |1.5.3b| | 2 |
| Offside Front Direction indicator insecure |1.5.3b| | 2 |
| Rear suspension component seized |2.4A2a|ii|| | 2 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 2 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| An item not tested |Manual| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Lower Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Motorcycle structure cracked |6.1.1a| | 2 |
| Front Direction indicator not working |1.5.1c| | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Offside Lower Motorcycle structure excessively corroded |6.1.1a| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Brake hose excessively deteriorated | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front suspension assembly component excessively bent |2.3.1| | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Offside Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Offside Front Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Centre Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Exhaust system insecure (6.1.2 (a)) | 1 |
| Nearside Rear Footrest insecure (6.2.12 (a)) | 1 |
| Rear Suspension arm attachment bracket/mounting insecure (5.3.3 (a) (i)) | 1 |
| Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 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 |
| Nearside Front Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Offside Front Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Centre Front Horn not working |1.7.3a| | 1 |
| Centre Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Offside Outer Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Offside Front Lower Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front Direction indicator insecure |1.5.3b| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Rear Motorcycle structure excessively corroded |6.1.1a| | 1 |
| 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 suspension assembly component missing |2.3.1| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Brake drum|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Front Steering lock stop ineffective |2.1.3| | 1 |
| Offside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside 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 |
| Nearside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Brake disc|s| insecure |3.2.A1g| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Steering lock stop missing |2.1.3| | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Brake hose leaking (1.1.12 (c)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Rear position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Offside Front Direction indicator obscured |1.5.1a| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Upper Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside 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 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Centre All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Centre Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Centre Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Centre Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Centre Rear An item not tested |Manual| | 1 |
| Centre Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Fuel cap mounting flange/sealing method defective |7.2.2c| | 1 |
| Offside Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Headlamp aim beam image too far to the right |1.6.4| | 1 |
| Rear suspension bearing excessively deteriorated |2.4A.2a|i|| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Nearside Handlebar excessively deformed |2.2.1 |c| |i|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Rear Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Centre Upper Fuel system component insecure |7.2.1b| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Offside Lower Motorcycle structure cracked |6.1.1a| | 1 |
| Rear position lamp adversely affected by the operation of another lamp with stop light |1.1.3b| | 1 |
| Stop lamp affected by the operation of another lamp tail light |1.3.2| | 1 |
| Centre Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Offside Front Brake hose which buldges |3.2.B4| | 1 |
| Front Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Front An item not tested |Manual| | 1 |
| Front Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Front Fuel system component insecure |7.2.1b| | 1 |
| Centre Front Lower Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Centre Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Stop lamp deteriorated and function impaired |1.3.3a| | 1 |