| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 14 |
| Steering headbearing has excessive free play |2.2.2| | 10 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Horn not working |1.7.3a| | 4 |
| Registration plate issues | 4 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Rear reflector on motorcycle obscured |1.4.1| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Front Brake master cylinder has a seized master cylinder pivot. |3.2.B5| | 1 |
| Rear Brake lever attachment screws loose |3.1.2b| | 1 |
| Nearside Direction indicators flashing less than 60 times a minute |1.4.A.2g| | 1 |
| Offside Direction indicators flashing less than 60 times a minute |1.4.A.2g| | 1 |
| Nearside Front Track rod end ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.2.C.1c| | 1 |
| Offside Front Upper Suspension arm has excessive play in a ball joint |2.4.G.2| | 1 |
| Trailing arm has excessive play in a pin/bush |2.4.G.2| | 1 |
| Nearside Rear wheel bearing has excessive play |2.6.2| | 1 |
| Front front brake recording little or no effort |3.7.B.5a| | 1 |
| Headlamp insecure |1.7.3| | 1 |
| Nearside Inner Track rod end loose |2.2.B.1d| | 1 |
| Parking brake efficiency below requirements |3.7.C.1b| | 1 |
| Rear brake binding | 1 |
| Nearside Front suspension has excessive play in a upper suspension ball joint |2.5.B.1a| | 1 |
| Offside Front suspension has excessive play in a upper suspension ball joint |2.5.B.1a| | 1 |
| Offside Front Upper Suspension arm attachment bracket/mounting insecure |2.4.G.1| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Wheel damaged significantly reducing the original strength |4.2.1a| | 1 |
| Nearside Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Offside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Nearside Front Rear reflector on motorcycle insecure |1.4.2c| | 1 |
| Offside Rear Rear reflector on motorcycle deteriorated and function impaired |1.4.2a| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Headlamp insecure fairing panel very loose many fixings missing or loose |4.1.1 |c|| | 1 |
| Riders seat insecure fixings missing or loose |6.2.5 |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 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front suspension assembly component excessively bent |2.3.1| | 1 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Offside Front Position lamp switch insecure |1.1.4b| | 1 |
| Offside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Rear wheel rotation likely to be impeded Number Plate Holder |6.2.1b| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Headlamp incorrect colour |1.2.1| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Offside Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Centre Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Rear suspension has a fracture of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear Brake lever insecure |3.1.2a| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Steering linkage has excessive free play |2.2.2| | 1 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Offside Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Nearside Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Brake hose damaged | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |