| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 19 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 12 |
| Registration plate issues | 12 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Throttle operating incorrectly |6.2.1f| | 8 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Registration plate lamp issues | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Horn not working |1.7.3a| | 5 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Offside Front Brake disc|s| cracked |3.2.A1g| | 4 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 3 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Nearside Front Brake disc|s| cracked |3.2.A1g| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 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 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Front suspension has inadequate damping effect. |2.3.6c| | 3 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 3 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Rear Direction indicators not working |1.5.1c| | 2 |
| Offside Handlebar deformed |2.1.1b| | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Front position lamp incorrect colour |1.1.2a| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Offside Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Offside Steering lock stop ineffective |2.1.3| | 2 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Nearside Front Footrest insecure |6.2.1a| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Rear Brake component is excessively corroded binding |3.1.5| | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Nearside Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Nearside Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front Roller brake test indicates a binding brake 25kg |3.3.A1a| | 1 |
| Offside Front Brake disc fractured |1.1.14 |a| |ii|| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Offside Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Nearside Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Offside Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Front Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Offside Exhaust has part of the system missing |7.1.1a| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Front Upper Brake hose fouling trapped on left hand lock |3.2.B3b| | 1 |
| Rear Brake locking device insecure torque arm front bolt/nut |3.2.A1e| | 1 |
| Throttle operating incorrectly stiff action |6.2.1f| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake pedal mounting cracked . |3.1.2c| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear 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 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Offside Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Rear Brake component defective due to a deliberate modification which significantly reduces the original strength |3.1.5| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Centre Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Offside Front Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Offside Front Indicator tell tale not functioning |1.5.2| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Rear Stop lamp not working CONTROL |4.3.1 |a| |ii|| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Nearside Front Lower Motorcycle structure cracked |6.1.1a| | 1 |
| Offside Front Lower Motorcycle structure cracked |6.1.1a| | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on Both rear lights not working |1.1.3a| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Centre Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Offside Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Offside Front Direction indicator adversely affected by the operation of another lamp |4.4.3 |b|| | 1 |
| Nearside Front Direction indicator adversely affected by the operation of another lamp |4.4.3 |b|| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Central Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Nearside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Nearside Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Stop lamp not working with front brake lever. (4.3.1 (a) (ii)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear Brake caliper insecure (1.1.16 (c) (i)) | 1 |
| Offside Front Brake caliper leaking (1.1.16 (b) (i)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Handlebar grip insecure to handlebar both (2.2.1 (d) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Rear Footrest insecure (6.2.12 (a)) | 1 |