| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 17 |
| Drive chain excessively loose |6.2.1d| | 9 |
| Horn not working |1.7.3a| | 7 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 7 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 6 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Drive chain excessively tight |6.2.1d| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Drive chain worn to excess |6.2.1e| | 5 |
| Registration plate issues | 4 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Offside Front Direction indicator not working |1.5.1c| | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Offside Rear Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Offside Direction indicator flashing less than 60 times a minute |1.5.1c| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| 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 Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Stop lamp affected by the operation of another lamp indicator built into rear light |1.3.2| | 1 |
| Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Wheel spoke cracked. |4.2.1b| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Headlamp aim not tested HEADLAMP PATTERN OUT OF RANGE *TOO LOW* |1.6| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Position lamp switch faulty |1.1.4a| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Rear Wheel spoke cracked. |4.2.1b| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Brake pedal not releasing correctly and functionality of brakes affected Rear brake (1.1.2 (b) (ii)) | 1 |
| Shock absorber has a serious fluid leak L/h Fork leg (5.3.2 (b)) | 1 |
| Nearside Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front Wheel damaged significantly reducing the original strength |4.2.1a| | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Steering operation restricted in free movement from lock to lock Brake cable routed incorrectly! |2.1.4 |c|| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Nearside Rear Direction indicator likely to become detached |4.4.1 |c| |ii|| | 1 |
| Offside Front Direction indicator incorrect colour paint on lens |4.4.3 |a|| | 1 |
| Offside Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear suspension component excessively corroded. |2.4.A.1a| | 1 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Fuel tank leaking leaking at fuel tap |7.2.1a| | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Headlamp aim beam image too far to the left |1.6.4| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Nearside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Shock absorber has negligible damping effect Appear to be seized no movement (5.3.2 (b)) | 1 |
| Exhaust has a major leak of exhaust gases blowing at down pipe (6.1.2 (a)) | 1 |
| Centre Rear Exhaust is leaking and excessively noisey |7.1.1b| | 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 Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Front Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Offside Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Inner Exhaust excessively deteriorated |7.1.1a| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Rear Wheel spoke missing (5.2.2 (d)) | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Wheel fixing missing (single fixing) split pin (5.2.1 (a) (ii)) | 1 |
| Nearside Front Lower Fork yoke insecure (2.2.2 (d) (i)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |