| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 25 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 10 |
| Drive chain excessively loose |6.2.1d| | 10 |
| Horn not working |1.7.3a| | 9 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 7 |
| Drive chain worn to excess |6.2.1e| | 7 |
| Registration plate issues | 7 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Nearside Rear Footrest missing |6.2.1a| | 5 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Front Brake excessively binding (1.2.1 (f)) | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 4 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Offside Rear Footrest missing |6.2.1a| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 3 |
| Fuel cap sealing washer torn |7.2.2c| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Rear Footrest missing |6.2.1a| | 3 |
| Headlamp insecure |1.2.3b| | 3 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 3 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 3 |
| Rear Brake excessively binding (1.2.1 (f)) | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 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 wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Headlamp aim not tested |4.1.2 |b|| | 2 |
| Rear Position lamp not working |4.2.1 |a|| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Brake reaction bracket excessively worn not split pinned (1.1.15 (b)) | 2 |
| Rear Brake linkage excessively worn (1.1.15 (b)) | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Front mudguard insecure |2.3.7| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Front Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 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 |
| Front Headlamp aim not tested (4.1.2 (b)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Nearside Exhaust mounting missing |7.1.1c| | 1 |
| Front Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Offside Front Footrest insecure (6.2.12 (a)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Nearside Front suspension assembly component excessively bent |2.3.1| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Brake back plate|s| insecure |3.2.A1j| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Footrest insecure |6.2.12 |a|| | 1 |
| Rear Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Rear Brake pedal insecure |1.1.2 |e| |i|| | 1 |
| Nearside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride rear sprocket insecure |6.2.1h| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Brake hose excessively deteriorated | 1 |
| Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear Brake reaction bracket excessively corroded not split pinned (1.1.15 (b)) | 1 |
| Rear Brake pivot excessively worn (1.1.15 (b)) | 1 |
| Dipswitch does not operate immediately when selected on main beam |4.1.3 |b|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Motorcycle structure joining/attachment plate or fastening insecure visor insecure |6.1.1 |b| |i|| | 1 |
| Engine mounting/bracket excessively loose |6.1.8 |a| |ii|| | 1 |
| Rear Brake linkage clevis joint excessively worn |3.2.A1d| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Front Brake reaction bracket insecure |3.2.A1j| | 1 |
| Front Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Rear Brake drum|s| insecure |3.2.A1g| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Offside Rear Shock absorber insecurely attached (5.3.2 (a) (i)) | 1 |
| Headlamp aim not tested no visable pattern |4.1.2 |b|| | 1 |
| Nearside Rear Direction indicator with a multiple light source more than 1/2 not functioning |4.4.1 |a| |ii|| | 1 |
| Offside Rear Direction indicator with a multiple light source more than 1/2 not functioning |4.4.1 |a| |ii|| | 1 |
| Direction indicator obviously incorrectly positioned rear indicators are 13cm apart and not the required 24cm distancing |4.4.3 |a|| | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Exhaust system insecure both front header pipe lower fixings missing |6.1.2 |a|| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition header pipes insecure and leaking exhaust gas |8.1.1 |a|| | 1 |
| Brake component is fractured |3.1.5| | 1 |
| Front Direction indicator likely to become detached |4.4.1 |c| |ii|| | 1 |
| Headlamp not working on dipped beam Headlight not working on high or low beam |4.1.1 |a| |ii|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Steering headbearing has excessive wear or free play notchy |2.2.2 |f| |i|| | 1 |
| Handlebar grip insecure to handlebar both sides |2.2.1 |d| |ii|| | 1 |
| Forks excessively corroded |2.2.2 |d| |i|| | 1 |
| Brake drum significantly and obviously worn rear drum brake badly fluctuating on brake roller test also very noisy |1.1.14 |a| |i|| | 1 |
| Clutch lever positioned so it cannot be readily operated whole clutch lever bracket loose on handlebars |6.2.7 |b|| | 1 |
| Wheel alignment incorrect which adversely affects the steering handlebars and yoke not straight |2.4 |a|| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Headlamp at least one does not illuminate on main beam switch damaged |1.2.2a|ii|| | 1 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Nearside Front Lower Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Central Front Upper Steering linkage locking device ineffective (2.1.3 (d)) | 1 |
| Nearside Rear Lower Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Central Front Upper Fuel cap ineffective (6.1.3 (b) (i)) | 1 |
| Rear suspension component excessively corroded. |2.4.A.1a| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Handlebar excessively corroded |2.1.1b| | 1 |
| Rear suspension component excessively corroded. Swingarm holed |2.4.A.1a| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Motorcycle structure excessively corroded Swinging arm |6.1.1a| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Offside Rear Upper Shock absorber insecurely attached (5.3.2 (a) (i)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Rear position lamp obscured more than 50% |1.1.1d| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock right hand lock |2.1.4| | 1 |
| Inner Front Lower Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Inner Front Lower Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Outer Rear Lower Drive chain excessively loose |6.2.1d| | 1 |
| Inner Front Lower Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Nearside Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Front Upper Exhaust mounting missing |7.1.1c| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Brake pedal mounting insecure |3.1.2a| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Rear suspension has an inadequate repair of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |