| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 41 |
| Rear reflector on motorcycle missing |1.4.1| | 14 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Throttle operating incorrectly |6.2.1f| | 9 |
| Registration plate issues | 8 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 6 |
| Horn not working |1.7.3a| | 6 |
| Front wheel bearings have excessive free play |2.3.5b| | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 5 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Rear Drive chain excessively loose |6.2.1d| | 4 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Offside Front Footrest insecure |6.2.1a| | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 4 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 3 |
| Front Steering headbearing has excessive free play |2.2.2| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Headlamp insecure |1.2.3b| | 3 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Front suspension has inadequate damping effect. |2.3.6c| | 3 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Front Horn not working |1.7.3a| | 2 |
| Front Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Nearside Rear Direction indicator missing |1.5.1a| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Offside Front Steering lock stop ineffective |2.1.3| | 2 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| An item not tested |Manual| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Offside Handlebar deformed |2.1.1b| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 2 |
| Nearside Front Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Nearside Front Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Front Front suspension assembly component loose |2.3.1| | 1 |
| Offside Front Footrest missing |6.2.1a| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp lens defective such that the emitted light is adversely affected (4.3.1 (b) (ii)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Stop lamp insecure |1.3.3b| | 1 |
| Front Brake pipe union leaking fluid |3.2.B4| | 1 |
| Chain guard fouling another component |6.2.1c| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Offside Front Brake component damaged and seriously reduced in strength |3.2.A1| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Brake component is fractured |3.1.5| | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Front Shock absorber likely to become detached |5.3.2 |a| |ii|| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear An item not tested |Manual| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Nearside Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Seat insecure |6.2.1a| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Brake lever attachment screws loose |3.1.2b| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Offside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside 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 |
| Drive chain excessively tight |6.1.7 |k| |i|| | 1 |
| Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Brake pedal mounting cracked . |3.1.2c| | 1 |
| Brake pedal is inoperative |3.1.3c| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Lower Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Front Brake component damaged and seriously reduced in strength |3.2.A1| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Offside Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Centre Riders seat insecure |6.2.1a| | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Stop lamp does not illuminate immediately a brake applies Control one |1.3.1a| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Brake caliper|s| insecure |3.2.A1j| | 1 |