| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 32 |
| Headlamp aim out of alignment | 18 |
| Registration plate issues | 11 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Drive chain excessively loose |6.2.1d| | 8 |
| Horn not working |1.7.3a| | 7 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 5 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 5 |
| Drive chain excessively tight |6.2.1d| | 5 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Riders seat insecure |6.2.1a| | 4 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 4 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Nearside Front Footrest insecure |6.2.1a| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| 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| | 2 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 2 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Offside Rear Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Rear Drive chain excessively tight |6.2.1d| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 2 |
| Nearside Footrest insecure |6.2.1a| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| All position lamps adversely affected by the operation of the horn |1.1.3b| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Central Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Front Brake component is excessively corroded |3.1.5| | 1 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Front Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Nearside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Lower Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Nearside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Front Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Front Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Front Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Front Brake fluid significantly below minimum mark |1.1.10 |d| |ii|| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Offside Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Offside Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Nearside Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Offside Rear Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Offside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Stop lamp does not illuminate immediately a brake applies rear switch |1.3.1a| | 1 |
| An item not tested |Manual| | 1 |
| Front Lower Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Footrest insecure |6.2.1a| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Motorcycle structure adversely modified |6.1.1b| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Brake lever pivots excessively worn |3.1.3a| | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Headlamp switch faulty |1.2.4| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Shock absorber has a serious fluid leak both front stansions |5.3.2 |b|| | 1 |
| Front Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Brake master cylinder defective but brake still operating |1.1.10 |b| |i|| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Nearside Brake disc|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Front Brake locking device missing |3.2.A1e| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Offside Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Offside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Direction indicator obscured |1.5.1a| | 1 |
| Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Rear Direction indicator obscured |1.5.1a| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Front Handlebar deformed |2.1.1b| | 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 |