| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 29 |
| Rear reflector on motorcycle missing |1.4.1| | 25 |
| Registration plate issues | 16 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 13 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 10 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 9 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| Horn not working |1.7.3a| | 8 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 8 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 8 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 7 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 6 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 5 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 5 |
| Drive chain excessively loose |6.2.1d| | 5 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Horn not working (7.7 (a) (ii)) | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 4 |
| Rear Brake disc|s| cracked |3.2.A1g| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 3 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 3 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| 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)) | 2 |
| An item not tested |Manual| | 2 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Offside Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Front position lamp missing |1.1.1a| | 2 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Nearside Steering lock stop ineffective |2.1.3| | 2 |
| Offside Steering lock stop ineffective |2.1.3| | 2 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Horn control not readily accesible. |1.7.2a| | 1 |
| Nearside Front Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Upper Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Rear mono-shock insecure |2.4.B.4| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Suspension component pin or bush excessively worn Bottom mono shock bush / attachment has excessive play. |5.3.4 |a| |i|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Riders seat with a defective supporting structure (6.2.5 (a) (i)) | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Offside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Nearside Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Offside Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Nearside Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Centre Front Horn not working |1.7.3a| | 1 |
| Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Front wheel spindle loose |2.3.5a| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Brake performance not tested |3.3| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front position lamp does not face the front |1.1.1d| | 1 |
| Offside Front Brake cylinder leaking hydraulic fluid caliper leaking on joint |3.2.B1e| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Brake master cylinder insecure (1.1.10 (c)) | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Rear Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Centre Front Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Offside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Nearside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front suspension assembly has an insecure fork brace |2.3.4d| | 1 |
| Front position lamp does not illuminate immediately when switched on side lights |1.1.3a| | 1 |
| Wheel alignment incorrect which adversely affects the handling n/s/f |0mm| o/s/f |50mm| |2.5.1| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Clutch lever bent so it cannot be readily operated. |6.2.1g| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front Upper Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Brake hose excessively twisted |3.2.B3a| | 1 |
| Brake hose damaged | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Suspension rod attachment bracket/mounting fractured (5.3.3 (b) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Offside Front Upper Suspension attachment bracket/mounting insecure bolt missing (5.3.3 (a) (i)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Horn sound not in accordance with requirements too quiet (7.7 (c)) | 1 |
| Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Handlebar retaining device loose (2.2.1 (b) (i)) | 1 |
| Rear Wheel spindle locking device missing (5.2.1 (d)) | 1 |
| Wheel bearing play so excessive it is likely to break up cush drive bearing (5.1.3 (a) (ii)) | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Clutch lever bent so it cannot be readily operated. |6.2.1g| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Offside Front All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Nearside Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front position lamp does not illuminate immediately when switched on park light. |1.1.3a| | 1 |
| Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Decelerometer brake test indicates a binding brake |3.3.E1d| | 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 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Rear Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front An item not tested |Manual| | 1 |
| Front Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Rear Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Front Brake grabbing severely (1.2.1 (c)) | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Centre Exhaust has part of the system missing |7.1.1a| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Valve stem seriously damaged both front and rear (5.2.3 (j)) | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected |2.2.2 |f| |ii|| | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Position lamp switch insecure |1.1.4b| | 1 |
| Offside Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Offside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Offside Front Position lamp switch insecure |1.1.4b| | 1 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Stop lamp switch with a delay in operation rear brake (4.3.2 (a) (ii)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Offside Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Horn missing |1.7.1| | 1 |
| Front Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Brake linkage has abnormal movement due to excessive wear |3.2.A1i| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Brake grabbing severely (1.2.1 (c)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Central Rear Suspension rod ball joint excessively worn rear suspension lower bush badly worn (5.3.4 (a) (i)) | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Wheel spindle loose |5.2.1 |c| |i|| | 1 |
| Rear Wheel fixing missing |single fixing| |5.2.1 |a| |ii|| | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Offside Rear Lower Brake locking device insecure |3.2.A1e| | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |