| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 61 |
| Registration plate issues | 30 |
| Rear reflector on motorcycle missing |1.4.1| | 23 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 16 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 13 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 12 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 12 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 11 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 10 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 8 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 8 |
| Steering headbearing has excessive free play |2.2.2| | 7 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 6 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 6 |
| Horn not working |1.7.3a| | 6 |
| Drive chain excessively loose |6.2.1d| | 6 |
| Drive chain excessively tight |6.2.1d| | 6 |
| Nearside Front Footrest insecure |6.2.1a| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 4 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 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 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Offside Rear Direction indicator not working |1.5.1c| | 4 |
| Offside Front Footrest insecure |6.2.1a| | 4 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 4 |
| Front Steering headbearing has excessive free play |2.2.2| | 4 |
| Nearside Front Direction indicator insecure |1.5.3b| | 4 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 4 |
| Offside Steering lock stop ineffective |2.1.3| | 3 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Front mudguard insecure |2.3.7| | 3 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Offside Front Direction indicator insecure |1.5.3b| | 3 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 3 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Offside Rear Footrest missing |6.2.1a| | 3 |
| Nearside Handlebar deformed |2.1.1b| | 3 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Rear Footrest missing |6.2.1a| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Offside Footrest insecure |6.2.1a| | 2 |
| Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Chain guard insecure |6.2.1c| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Stop lamp does not emit a steady light |1.3.1b| | 2 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 2 |
| Direction indicator missing |1.5.1a| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Offside Handlebar deformed |2.1.1b| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 2 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Front Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Front Brake lever mounting insecure |3.1.2a| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Brake pipe excessively damaged |3.2.B2a| | 1 |
| Nearside Front suspension assembly component loose |2.3.1| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Rear mono-shock insecure |2.4.B.4| | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Headlamp aim headlamp deteriorated and function impaired No beem patern |1.2.3a| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Stop lamp switch with a delay in operation |4.3.2 |a| |ii|| | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Nearside Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Direction indicator obscured |1.5.1a| | 1 |
| Rear position lamp obscured more than 50% |1.1.1d| | 1 |
| Offside Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Front Handlebar deformed |2.1.1b| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Offside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front wheel spindle loose |2.3.3a| | 1 |
| Front Brake lever pivots excessively worn |3.1.3a| | 1 |
| Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Brake lever mounting insecure |3.1.2a| | 1 |
| Offside Front Steering lock stop ineffective |2.1.3| | 1 |
| Offside Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Rear Brake locking device missing |3.2.A1e| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Rear Direction indicator insecure |1.5.3b| | 1 |
| An item not tested |Manual| | 1 |
| Lower Drive chain excessively loose |6.2.1d| | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear reflector on motorcycle damaged and function impaired |1.4.2a| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Nearside Front Steering lock stop ineffective |2.1.3| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Rear Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Offside Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Rear Brake linkage clevis joint excessively worn |3.2.A1d| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Front Brake hose fouling |3.2.B3b| | 1 |
| Rear Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Brake hose excessively twisted |3.2.B3a| | 1 |
| Nearside Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Front suspension has a modification which reduces the strength of a load bearing member or its supporting structure. |2.3.8| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Offside Front Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Nearside Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Offside Front Headlamp incorrect colour |1.2.1| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Plate brake test indicates a sticking brake |3.3.B1a| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Fork yoke in such a condition that steering control is adversely affected |2.2.2 |d| |ii|| | 1 |
| Offside Lower Fork yoke excessively deformed |2.2.2 |d| |i|| | 1 |
| Nearside Front Upper Steering operation fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Steering operation linkage fouling when handlebars turned from lock to lock hitting clocks/speedo |2.1.4 |a|| | 1 |
| Front Front position lamp flickers when tapped lightly by hand |1.1.3c| | 1 |
| Offside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Front Brake component cracked and seriously reduced in strength |3.2.A1| | 1 |
| Rear Brake component cracked and seriously reduced in strength |3.2.A1| | 1 |
| Brake pedal attachment screws missing. |3.1.2b| | 1 |
| Offside Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Offside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Handlebar mounting clamp bolt missing |2.1.1a| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Offside Front Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Brake locking device missing |3.2.A1e| | 1 |
| Offside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Offside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Brake lever attachment screws missing |3.1.2b| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear Footrest insecure |6.2.1a| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Gradient brake test indicates a binding brake |3.3.D1c| | 1 |
| Rear Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Riders seat insecure |6.2.1a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock rh lock |2.1.4| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Direction indicator missing both front |1.5.1a| | 1 |
| Direction indicator insecure both rear |1.5.3b| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Footrest missing both rear |6.2.1a| | 1 |
| Front Steering lock stop missing |2.1.3| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Front Engine mounting/bracket excessively loose Crash bung |6.1.8 |a| |ii|| | 1 |
| Riders seat insecure bolt missing holding riders seat on (6.2.5 (a) (ii)) | 1 |
| Nearside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Registration plate lamp issues | 1 |
| Horn not working (7.7 (a)) | 1 |