| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 18 |
| Drive chain excessively loose |6.2.1d| | 15 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 10 |
| Front wheel bearings have excessive free play |2.3.5b| | 10 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Registration plate issues | 8 |
| Front wheel bearings are excessively rough |2.3.5b| | 8 |
| Drive chain worn to excess |6.2.1e| | 7 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 7 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Nearside Front Footrest insecure |6.2.1a| | 6 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Drive chain excessively tight |6.2.1d| | 5 |
| Riders seat insecure |6.2.1a| | 5 |
| Horn not working |1.7.3a| | 5 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 4 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 4 |
| Nearside Front Direction indicators not working |1.5.1c| | 3 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Offside Footrest insecure |6.2.1a| | 3 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Chain guard insecure |6.2.1c| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Headlamp insecure |1.2.3b| | 3 |
| Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Seat insecure |6.2.1a| | 2 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Offside Front Footrest insecure |6.2.1a| | 2 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Fuel system component insecure |7.2.1b| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Offside Steering lock stop ineffective |2.1.3| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| Rear Brake pedal insecure |3.1.2a| | 2 |
| Steering lock stop ineffective |2.1.3| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear Seat insecure |6.2.1a| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Headlamp damaged and function impaired |1.2.3a| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake linkage excessively damaged |3.2.A1c| | 1 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front suspension assembly component missing |2.3.1| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Brake fluid reservoir fluid not visible Reservoir broken (1.1.10 (d) (iii)) | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Registration plate lamp issues | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Brake pedal cracked |3.1.2c| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 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 Headlamp at least one does not illuminate on main beam (1.2.2a(ii)) | 1 |
| Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls (2.1.2b) | 1 |
| Brake lever excessively damaged sharp point |3.2.A1c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Brake fluid reservoir cap missing |3.2.B1c| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Brake fluid reservoir severely damaged |3.2.B1b| | 1 |
| Rear Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking frame bolts loose |6.1.1c| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride chain locking devise worn and loose |6.2.1h| | 1 |
| Front Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Front wheel spindle securing nut locking device insecure |2.3.3a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Brake back plate|s| insecure |3.2.A1j| | 1 |
| Rear Footrest insecure |6.2.1a| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Exhaust mounting missing |7.1.1c| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Brake pedal mounting insecure |3.1.2a| | 1 |
| Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Rear Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Throttle operating incorrectly sticking |6.2.1f| | 1 |
| Fairings so located that it is likely to impede the steering front brake and clutch foul on fairing |2.1.2e| | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride wheel locking device |6.2.1h| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on number plate lamp |1.1.3a| | 1 |
| Headlamp at least one does not illuminate on dipped beam head light to dim on dip |1.2.2a|i|| | 1 |
| Rear Lower Suspension component ball joint excessively worn (5.3.4 (a) (i)) | 1 |
| Offside Front Handlebar retaining device loose (2.2.1 (b) (i)) | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Brake pedal attachment screws missing. |3.1.2b| | 1 |
| Steering lock stop ineffective brake lever hits fairing and bar traps hand |2.1.3| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Drive chain excessively loose also has tight spots |6.2.1d| | 1 |
| Rear Brake pipe inadequately supported |3.2.B2b| | 1 |
| Front Brake hose fouling |3.2.B3b| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Rear Brake hose fouling |3.2.B3b| | 1 |
| Front Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected |2.2.2 |f| |ii|| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Offside Steering lock stop missing |2.1.3| | 1 |
| Front Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Brake lever pivots excessively worn |3.1.3a| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Front Brake locking device missing |3.2.A1e| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Offside Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering wiring |2.1.2a| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Exhaust has a major leak of exhaust gases hole in silencer (6.1.2 (a)) | 1 |
| Front Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Decelerometer brake test the less effective brake control does not achieve an efficiency of 25%. |3.3.E1b| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Exhaust silencer likely to become detached |8.1.1 |b| |ii|| | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Nearside Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced foot rest mounting |6.1.1 |b| |ii|| | 1 |
| Nearside Footrest insecure |6.2.12 |a|| | 1 |
| Pillion seat insecure |6.2.6 |a| |ii|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Stop lamp not working front control |4.3.1 |a| |ii|| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Headlamp light intensity severely reduced |4.1.4 |a|| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Rear Brake lever has abnormal movement of levers indicating excessive wear or maladjustment |1.1.15 |f|| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Centre Front Upper Steering headbearing has excessive free play steering head bearings need adjusting |2.2.2| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Centre Front Riders seat insecure bolt missing to secure seat |6.2.1a| | 1 |
| Centre Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |