| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 33 |
| Registration plate issues | 17 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 17 |
| Front wheel bearings have excessive free play |2.3.5b| | 12 |
| Rear reflector on motorcycle missing |1.4.1| | 9 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Drive chain excessively loose |6.2.1d| | 8 |
| Horn not working |1.7.3a| | 8 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 7 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 7 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 6 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 5 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Fuel system component leaking |7.2.1a| | 3 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 3 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 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 position lamp incorrect colour |1.1.2b| | 2 |
| Offside Footrest insecure |6.2.1a| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Front Direction indicator not working |1.5.1c| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Rear reflector on motorcycle missing (1.4.1) | 2 |
| Front Horn not working |1.7.3a| | 1 |
| Nearside Rear Lower Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 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 |
| Rear Brake lever has restricted free movement pedal fouling exhaust |1.1.15 |e|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Rear suspension bearing has excessive free play swing arm bearings have movement |2.4.A2a|i|| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Stop lamp does not illuminate immediately a brake applies rear brake |1.3.1a| | 1 |
| Fuel tank leaking nearside bottem seam |7.2.1a| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Wheel spindle or securing nut|s| so insecure that wheel security or steering control is adversely affected right spindle pinch bolt loose |5.2.1 |c| |ii|| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Rear Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Nearside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Stop lamp not working front brake light switch does not function |4.3.1 |a| |ii|| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Lower Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Lower Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Throttle operating incorrectly |6.2.1f| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Offside Position lamp switch insecure |1.1.4b| | 1 |
| Stop lamp not working Rear switch not working |4.3.1 |a| |ii|| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Brake cylinder severely corroded |3.2.B1b| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Offside Front Brake lever attachment screws loose |3.1.2b| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Centre Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Upper Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Lower Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Fuel tank leaking |7.2.1a| | 1 |
| Rear Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Brake lever cracked |3.1.2c| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Centre Front Horn not working |1.7.3a| | 1 |
| Throttle operating incorrectly Adjust Free Play |6.2.1f| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front position lamp does not illuminate immediately when switched on (1.1.3a) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Fork yoke insecure (2.2.2 (d) (i)) | 1 |
| Nearside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Offside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Rear Suspension component has excessive wear or free play (5.3.3 (d)) | 1 |
| Offside Front Shock absorber has a serious fluid leak fork seal (5.3.2 (b)) | 1 |
| Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Steering headbearing has excessive wear or free play Freeplay (2.2.2 (f) (i)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |