| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 64 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 36 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 25 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 21 |
| Rear reflector on motorcycle missing |1.4.1| | 19 |
| Horn not working |1.7.3a| | 18 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 17 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 16 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 16 |
| Steering headbearing has excessive free play |2.2.2| | 15 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 11 |
| Registration plate issues | 11 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Fuel cap sealing washer missing |7.2.2c| | 9 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 8 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 7 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 7 |
| Offside Rear Direction indicator not working |1.5.1c| | 7 |
| Rear reflector on motorcycle obscured |1.4.1| | 7 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| 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| | 6 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 6 |
| Nearside Rear Direction indicator not working |1.5.1c| | 5 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Direction indicators not working |1.5.1c| | 4 |
| Offside Steering lock stop ineffective |2.1.3| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 4 |
| Offside Rear Footrest missing |6.2.1a| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Offside Front Direction indicator not working |1.5.1c| | 4 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 3 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 3 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 3 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Nearside Rear Footrest insecure |6.2.1a| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Headlamp aim not tested |1.6| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Offside Rear Direction indicator missing |1.5.1a| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Rear position lamp deteriorated and function impaired |1.1.1b| | 3 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 3 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| All direction indicators not working (4.4.1 (a) (ii)) | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 2 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 2 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Rear reflector on motorcycle obscured |1.4.2b| | 2 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 2 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 2 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 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 |
| Rear position lamp incorrect colour |1.1.2b| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Offside Rear Direction indicator damaged and function impaired |1.5.3a| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 2 |
| Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Front Brake lever mounting insecure |3.1.2a| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Motorcycle structure excessively damaged CENTER STAND RETURN SPRING WEAK AND NOT SUPPORTING STAND IN FULLY RAISED POSITION |6.1.1a| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Brake fluid reservoir fluid not visible (1.1.10 (d) (iii)) | 1 |
| Front Brake master cylinder defective but brake still operating (1.1.10 (b) (i)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Offside Footrest missing |6.2.1a| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Front Brake lever is inoperative |3.1.3c| | 1 |
| Decelerometer brake test no brake control achieves an efficiency of 30% |3.3.E1a| | 1 |
| Decelerometer brake test neither brake control achieves an efficiency of 25% |3.3.E1c| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Nearside Brake locking device missing |3.2.A1e| | 1 |
| Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Front position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Front Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Throttle operating incorrectly sticking |6.2.1f| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Rear Motorcycle structure adversely modified |6.1.1b| | 1 |
| Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Motorcycle structure adversely modified |6.1.1b| | 1 |
| Front Lower Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Brake component damaged and seriously reduced in strength |3.2.A1| | 1 |
| Rear Braking system does not have an approriate system/s fitted according to its age |3.1.1| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Rear reflector on sidecar missing |1.4.1| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Nearside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Rear reflector on motorcycle deteriorated and function impaired |1.4.2a| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Front Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Nearside Rear Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 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 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Nearside Footrest missing |6.2.1a| | 1 |
| All position lamps do not illuminate immediately when switched on do not work in dipped headlight position |1.1.3a| | 1 |
| Offside Front Brake lever is inoperative |3.1.3c| | 1 |
| Stop lamp not working Front control |4.3.1 |a| |ii|| | 1 |
| Stop lamp adversely affected by the operation of another lamp |4.3.3 |b|| | 1 |
| Fuel tank leaking |6.1.3 |b| |i|| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Exhaust system insecure |6.1.2 |a|| | 1 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Steering headbearing excessively stiff or notchy Stiffness in steering (2.2.2 (f) (i)) | 1 |
| All position lamps not working Front position lamp extinguishes on dipped beam (4.2.1 (a)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Registration plate lamp issues | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced centre stand insecure (6.1.1 (b) (ii)) | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Front Brake lever attachment screws loose |3.1.2b| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Centre Front Lower Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Direction indicators not working all |1.5.1c| | 1 |
| Offside Brake lever insecure |3.1.2a| | 1 |
| Front Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Front Lower Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Offside Rear Footrest missing |6.2.12 |a|| | 1 |
| Exhaust mounting does not fully support the exhaust system no support bolts |missing| |7.1.1.c| | 1 |
| Front Steering lock stop missing |2.1.3| | 1 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Offside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Rear suspension component excessively bent |2.4.A.1a| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Nearside Rear Lower Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Footrest insecure |6.2.1a| | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Fuel cap ineffective |6.1.3 |b| |i|| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Offside Front Upper Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Lower Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Front Lower Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Stop lamp deteriorated and function impaired very dim |1.3.3a| | 1 |