| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 47 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 14 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 13 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 12 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 11 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Horn not working |1.7.3a| | 11 |
| Steering headbearing has excessive free play |2.2.2| | 11 |
| Registration plate issues | 10 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 9 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 9 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 9 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 8 |
| Drive chain excessively loose |6.2.1d| | 8 |
| Rear reflector on motorcycle missing |1.4.1| | 7 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 7 |
| Rear Brake disc|s| cracked |3.2.A1g| | 7 |
| Front wheel bearings have excessive free play |2.3.5b| | 7 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 7 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 7 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 6 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 6 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Rear mono-shock pivot seized |2.4.B.4| | 5 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 5 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 5 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 5 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 5 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 4 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 4 |
| Nearside Front Brake disc|s| cracked |3.2.A1g| | 4 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Exhaust excessively deteriorated |7.1.1a| | 4 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 4 |
| Direction indicators not working |1.5.1c| | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Front Steering headbearing has excessive free play |2.2.2| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Rear Drive chain excessively loose |6.2.1d| | 3 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 3 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Offside Front Direction indicator insecure |1.5.3b| | 2 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Offside Front Footrest insecure |6.2.1a| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Rear Rear suspension component seized |2.4A2a|ii|| | 2 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Exhaust mounting missing |7.1.1c| | 2 |
| Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Offside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Nearside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Front position lamp missing |1.1.1a| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Brake hose damaged | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Front Brake component is severely distorted |3.1.5| | 1 |
| Nearside Front Steering lock stop ineffective |2.1.3| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Upper Direction indicators not working |1.5.1c| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Offside 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 Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil ands offside front fork seals |2.3.3| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Nearside Front Shock absorber has a serious fluid leak fork leg seal |5.3.2 |b|| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Nearside Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock both locks |2.1.4| | 1 |
| Rear Brake fluid reservoir cap missing |3.2.B1c| | 1 |
| Centre Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Rear suspension bearing has excessive free play excess play rear linkage |2.4.A2a|i|| | 1 |
| Headlamp at least one does not illuminate on dipped beam lamp affected when steering turned |1.2.2a|i|| | 1 |
| Headlamp at least one does not illuminate on main beam lamp affected when steering turned |1.2.2a|ii|| | 1 |
| Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Centre Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Offside Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Lower Brake locking device missing |3.2.A1e| | 1 |
| Nearside Front Upper Direction indicators not working |1.5.1c| | 1 |
| Front suspension assembly component missing |2.3.1| | 1 |
| Brake hose excessively deteriorated | 1 |
| Nearside Rear Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Centre Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Brake component cracked and seriously reduced in strength |3.2.A1| | 1 |
| Offside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Front Brake hose excessively twisted |3.2.B3a| | 1 |
| Front Braking system does not have an approriate system/s fitted according to its age |3.1.1| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Centre Front Lower Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Front Upper Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Nearside Front Upper Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Centre Rear Lower Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear An item not tested |Manual| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Rear Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Centre Front Horn not working |1.7.3a| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Offside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Centre Rear Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Stop lamp does not illuminate immediately a brake applies when front brake is applied |1.3.1a| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Nearside Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Brake component is fractured |3.1.5| | 1 |
| Brake disc|s| cracked |3.2.A1g| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| An item not tested |Manual| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil r/h front seal needs replacement |2.3.3| | 1 |
| Front Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Front Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Front shock absorber seal failed and leaking oil both |2.3.3| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies switch |1.3.1a| | 1 |
| Direction indicators flashing more than 120 times per minute all four |1.5.1c| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Nearside Rear Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Steering lock stop missing |2.1.3| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Offside Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 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 component damaged and seriously reduced in strength |3.2.A1| | 1 |
| Offside Rear Lower Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Nearside Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Offside Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Offside Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Centre Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Rear Suspension rod modified so the suspension is inoperative |5.3.3 |c| |ii|| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Nearside Rear Drive chain excessively tight |6.2.1d| | 1 |
| Offside Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Headlamp main beam affected by the operation of another lamp when steering turned |1.2.2c| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Drive chain sprocket carrier worn to excess bearing of |6.2.1e| | 1 |
| Nearside Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Offside Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Rear Brake component leaking fluid |3.2.B4| | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Outer Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Lower Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Offside Rear Brake fluid significantly below minimum mark |1.1.10 |d| |ii|| | 1 |
| Offside Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Rear Suspension rod mounting modified so the suspension is inoperative |5.3.3 |c| |ii|| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Rear Suspension rod modified so the suspension is inoperative (5.3.3 (c) (ii)) | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Steering operation restricted in free movement from lock to lock speedo cable incorrectly fitted and routed (2.1.4 (c)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Steering operation impeded by a fairing (2.1.4 (e)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |