| Most common failures | No# failures |
|---|
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 34 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 32 |
| Headlamp aim out of alignment | 26 |
| Steering headbearing has excessive free play |2.2.2| | 17 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 16 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 14 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 14 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 13 |
| Front wheel bearings have excessive free play |2.3.5b| | 11 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 9 |
| Registration plate issues | 8 |
| Headlamp insecure |1.2.3b| | 8 |
| Front wheel bearings are excessively rough |2.3.5b| | 7 |
| Offside Front Direction indicator not working |1.5.1c| | 7 |
| Horn not working |1.7.3a| | 7 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 7 |
| Headlamp aim not tested |1.6| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Direction indicators not working |1.5.1c| | 5 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 5 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 4 |
| Offside Rear Direction indicator not working |1.5.1c| | 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 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 3 |
| Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 3 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 3 |
| Front Steering headbearing has excessive free play |2.2.2| | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Front Brake disc|s| excessively pitted |3.2.A1l| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Registration plate lamp issues | 2 |
| Exhaust mounting missing |7.1.1c| | 2 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 2 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Handlebar mounting clamp loose |2.1.1a| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| 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 |
| Direction indicator not working |1.5.1c| | 1 |
| Front Brake performance not tested |3.3| | 1 |
| Stop lamp does not illuminate immediately a brake applies Front brake |1.3.1a| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Centre Direction indicator not working |1.5.1c| | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Centre Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Front Lower Brake locking device missing Front lockin gcliop missing from retaining pin |3.2.A1e| | 1 |
| Centre Rear Lower Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Rear Lower Brake component has restricted free movement and operation is likely to be impeded Rear brake arm sticking |3.2.A1h| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Centre Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Offside Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Stop lamp not working front stop switch (4.3.1 (a) (ii)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Front mudguard insecure |2.3.7| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 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 |
| Lower Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Centre Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front shock absorber seal failed and leaking oil Front |2.3.3| | 1 |
| Vehicle identification number not permanently displayed |6.3.5a| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition Major leak |8.1.1 |a|| | 1 |
| Fuel cap ineffective Seal broken |6.1.3 |b| |i|| | 1 |
| Rear Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Rear Brake pipe inadequately supported |3.2.B2b| | 1 |
| Front Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Front Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Lower Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Rear Brake lever pivots excessively worn |3.1.3a| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Rear Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Nearside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Headlamp dipped beam flickers when tapped lightly by hand |1.2.2c| | 1 |
| Direction indicator flashing less than 60 times a minute All indicators do not flash |1.5.1c| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Front Brake locking device missing |3.2.A1e| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Rear Rear position lamp missing |1.1.1a| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front suspension assembly component excessively bent |2.3.1| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Outer Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Centre Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |