| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 48 |
| Rear reflector on motorcycle missing |1.4.1| | 46 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 22 |
| Registration plate issues | 22 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 18 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 11 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 11 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 10 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 8 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Front wheel bearings have excessive free play |2.3.5b| | 6 |
| Drive chain excessively loose |6.2.1d| | 6 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 6 |
| Drive chain worn to excess |6.2.1e| | 6 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 6 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 6 |
| Horn not working |1.7.3a| | 6 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 5 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| 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| | 4 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 4 |
| Offside Rear Footrest missing |6.2.1a| | 4 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Headlamp switch faulty |1.2.4| | 3 |
| Offside Front Footrest insecure |6.2.1a| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Fuel system component leaking |7.2.1a| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Footrest missing |6.2.1a| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Rear Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 2 |
| Nearside Front Footrest insecure |6.2.1a| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 2 |
| Rear Brake pipe union leaking fluid |3.2.B4| | 2 |
| Rear Brake disc|s| cracked |3.2.A1g| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Offside Footrest insecure |6.2.1a| | 2 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Chain guard insecure |6.2.1c| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Offside Front Brake disc|s| cracked |3.2.A1g| | 2 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| All direction indicators not working |4.4.1 |a| |ii|| | 2 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| An item not tested |Manual| | 1 |
| Nearside Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Nearside Steering operation fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Steering lock stop maladjusted |2.1.3| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition (8.1.1 (a)) | 1 |
| Nearside Headlamp aim not tested pattern obviously incorrect (4.1.2 (b)) | 1 |
| Offside Headlamp aim not tested pattern obviously incorrect (4.1.2 (b)) | 1 |
| Nearside Front Gradient brake test indicates a sticking brake |3.3.D1c| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Nearside Indicator switch insecure |1.5.4| | 1 |
| Front Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear Exhaust mounting missing |7.1.1c| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Steering control handlebar movement restricted by taut cables speedo cable |2.1.2c| | 1 |
| Braking system does not have an approriate system/s fitted according to its age n/s brake hose missing |3.1.1| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Front position lamp does not illuminate immediately when switched on both front side lights |1.1.3a| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Brake hose stretched by suspension movement |3.2.B3b| | 1 |
| Brake hose is likely to be fouled or trapped by moving parts not fixed in hose mounts |3.2.B2c| | 1 |
| All position lamps do not illuminate immediately when switched on main beam tell tell not working in the clock when head lights are on main beam |1.1.3a| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Front Front wheel spindle loose |2.3.3a| | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Rear Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Brake pipe excessively corroded | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Front position lamp missing |1.1.1a| | 1 |
| Front Brake hose excessively twisted |3.2.B3a| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Front Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Front Fairing so located that it is likely to impede the steering |2.1.2e| | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Brake hose leaking fluid |3.2.B4| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Brake component inadequately mounted Brake hose. |1.1.21 |c|| | 1 |
| Front Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Nearside Front Steering linkage locking device missing STEERING STOP MISSING (2.1.3 (d)) | 1 |
| Rear Brake hose fouling |3.2.B3b| | 1 |
| Rear Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies switch |1.3.1a| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Central Rear Upper Shock absorber insecurely attached (5.3.2 (a) (i)) | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 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 |
| Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Clutch lever bent so it cannot be readily operated. |6.2.1g| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen No discernable beam pattern (4.1.2 (a)) | 1 |
| Headlamp aim not tested No discernible beam pattern visible (4.1.2 (b)) | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Brake locking device insecure |3.2.A1e| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Nearside Headlamp incorrect colour |1.2.1| | 1 |
| Offside Headlamp incorrect colour |1.2.1| | 1 |
| Offside Headlamp aim beam image too far to the right |1.6.4| | 1 |
| Nearside Headlamp aim beam image too far to the left |1.6.4| | 1 |
| Front Brake lever is inoperative |3.1.3c| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride Engine Bolt |6.2.1h| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Offside Rear Upper Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Offside Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Front Brake hose which buldges |3.2.B4| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Centre Front Upper Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Offside Rear Lower 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 |
| Offside Rear Lower Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected steering is notchy |2.2.2 |f| |ii|| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition |8.1.1 |a|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Rear reflector on sidecar missing |1.4.1| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Offside Front Position lamp not working (4.2.1 (a)) | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Headlamp damaged and function impaired |1.2.3a| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Upper Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Lower Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Lower Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |