| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 71 |
| Rear reflector on motorcycle missing |1.4.1| | 30 |
| Registration plate issues | 28 |
| Headlamp aim beam image kick up to the offside |1.6| | 12 |
| Steering headbearing has excessive free play |2.2.2| | 8 |
| Rear reflector missing (4.8.2 (a) (ii)) | 7 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 7 |
| Horn not working |1.7.3a| | 7 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 7 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 6 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 5 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 5 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 4 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Front suspension has inadequate damping effect. |2.3.6c| | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Nearside Front Direction indicators not working |1.5.1c| | 3 |
| Rear Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Rear Brake locking device missing |3.2.A1e| | 2 |
| Front Direction indicator not working |1.5.1c| | 2 |
| Rear Direction indicator not working |1.5.1c| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Horn not working (7.7 (a)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Brake locking device insecure |3.2.A1e| | 2 |
| Front wheel has a loose wheel nut|s| |4.2.3a| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 2 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Brake locking device missing |3.2.A1e| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| All direction indicators light intensity significantly reduced |4.4.3 |a|| | 1 |
| Motorcycle structure joining/attachment plate or fastening insecure rear brake rod (6.1.1 (b) (i)) | 1 |
| Front Brake fluid significantly below minimum mark (1.1.10 (d) (ii)) | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Front Brake component cracked and seriously reduced in strength |3.2.A1| | 1 |
| Front Brake locking device missing |3.2.A1e| | 1 |
| Rear Decelerometer brake test indicates a severely grabbing brake |3.3.E1e| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Rear Brake has no recorded effort at a wheel |1.2.1 |a| |ii|| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Headlamp incorrect colour |1.2.1| | 1 |
| Offside Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Rear Stop lamp switch with a delay in operation |4.3.2 |a| |ii|| | 1 |
| Footrest missing both rear (6.2.12 (a)) | 1 |
| Throttle operating incorrectly throttle sticking (6.2.7 (a) (i)) | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Nearside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Nearside Rear Wheel fixing loose (multiple fixings) Adjuster locking nut loose (5.2.1 (a) (i)) | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front wheel spindle loose |2.3.5a| | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front wheel spindle securing nut locking device insecure r clip missing |2.3.5a| | 1 |
| Headlamp aim beam image kick up to the offside (1.6) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Suspension component ball joint likely to become detached NO SPLIT PIN IN REAR WHEEL SPINDLE LOCKING NUT |5.3.4 |a| |ii|| | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Brake has no recorded effort at a wheel |1.2.1 |a| |ii|| | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Nearside Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Offside Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Central Front Horn not working (7.7 (a) (ii)) | 1 |
| Nearside Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Nearside Fuel system component leaking |7.2.1a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Chain guard missing |6.2.1c| | 1 |
| Front Upper Brake component defective due to a deliberate modification which significantly reduces the original strength |3.1.5| | 1 |
| Front Lower Brake component defective due to a deliberate modification which significantly reduces the original strength |3.1.5| | 1 |
| Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Brake back plate|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Offside Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Nearside Handlebar grip insecure to handlebar left had grip (2.2.1 (d) (ii)) | 1 |
| Nearside Fuel system component leaking carb |7.2.1a| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 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 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Brake lever not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Offside Brake lever attachment screws loose |3.1.2b| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Rear Brake cylinder insecurely mounted and braking performance affected (1.1.16 (c) (ii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Indicator switch does not operate the direction indicators on the side selected |1.5.4| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Fuel pipe so insecure there is a risk of fire (6.1.3 (a) (ii)) | 1 |
| Wheel fixing missing (single fixing) rear spindle split pin missng (5.2.1 (a) (ii)) | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Nearside Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Offside Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Headlamp aim projected beam image obviously incorrect Headlamp realigned to achieve correct beam pattern. No Charge. (4.1.2 (c)) | 1 |
| Rear position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Fuel system component leaking |6.1.3 |b| |i|| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride front wheel spindle split pin missing |6.2.1h| | 1 |
| Front Plate brake test indicates a sticking brake |3.3.B1a| | 1 |
| All position lamps not working |4.2.1 |a|| | 1 |
| Rear wheel spindle securing nut locking device insecure rear pin missing |2.4.A.2b| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear mono-shock insecure |2.4.B.4| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Brake back plate|s| insecure |3.2.A1j| | 1 |
| Indicator switch inoperative |4.4.2 |a| |ii|| | 1 |
| Rear wheel bearings are excessively tight |2.4.A.2c| | 1 |
| Front Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Stop lamp does not illuminate immediately a brake applies FRONT AND REAR |1.3.1a| | 1 |
| Direction indicators not working ALL |1.5.1c| | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Nearside Front Brake component cracked and seriously reduced in strength |3.2.A1| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Front Brake disc contaminated both sides |1.1.14 |b|| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Offside Rear Exhaust has part of the system missing |7.1.1a| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.4 |a|| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Headlamp at least one does not illuminate on main beam Fuse |1.2.2a|ii|| | 1 |
| Nearside Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Offside Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Central Front Fork yoke insecure tightened headstock slightly (2.2.2 (d) (i)) | 1 |
| Rear Brake locking device insecure rear mountin bolt insurcure |3.2.A1e| | 1 |
| Nearside Front Brake cylinder insecurely mounted |3.2.B1a| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Centre Front Lower Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| 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 |