| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 41 |
| Registration plate issues | 17 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 13 |
| Rear reflector on motorcycle missing |1.4.1| | 12 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 10 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 8 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 7 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 7 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 6 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Horn not working |1.7.3a| | 4 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Rear Brake locking device missing |3.2.A1e| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Rear Position lamp not working |4.2.1 |a|| | 3 |
| Fuel system component leaking |7.2.1a| | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Brake hose excessively deteriorated | 3 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Front position lamp incorrect colour |1.1.2a| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Brake master cylinder fluid level dangerously low |3.2.B1d| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| All position lamps adversely affected by the operation of the horn |1.1.3b| | 1 |
| An item not tested |Manual| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear reflector on motorcycle does not reflect squarely to the rear |1.4.1| | 1 |
| Front Fuel pipe leaking |7.2.1a| | 1 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Offside Front Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Direction indicator obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Nearside Front Footrest insecure |6.2.12 |a|| | 1 |
| Centre Fuel system component leaking |7.2.1a| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Nearside Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Brake caliper leaking (1.1.16 (b) (i)) | 1 |
| Fuel system component leaking Tap (6.1.3 (b) (i)) | 1 |
| Floor brake test indicates a binding brake REAR CALIPER SEIZED |3.3.C2c| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| 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 |
| Dipswitch does not operate immediately when selected on dipped beam |4.1.3 |b|| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Rear Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Offside Rear Brake locking device missing |3.2.A1e| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear Brake component inadequately mounted brake stay bolt circlip |1.1.21 |c|| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 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 |
| Nearside Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Offside Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Offside Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Registration plate lamp issues | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Nearside Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Offside Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Centre Front Exhaust excessively deteriorated |7.1.1a| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Offside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Nearside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Offside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Position lamp switch insecure |1.1.4b| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Front Indicator tell tale not functioning |1.5.2| | 1 |
| Centre Rear Drive chain excessively loose |6.2.1d| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Fuel system component leaking 1 Carburettor leaking |6.1.3 |b| |i|| | 1 |
| Nearside Headlamp switch insecure |1.2.4| | 1 |
| All direction indicators missing |4.4.1 |a| |ii|| | 1 |
| Brake hose damaged | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Position lamp likely to become detached Bolts loose ! (4.2.1 (c) (ii)) | 1 |
| Front Headlamp insecure (4.1.1 (c)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling ADJUSTED DURING TEST |2.4 |a|| | 1 |
| Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Front Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Stop lamp light intensity significantly reduced (4.3.3 (a) (ii)) | 1 |
| Rear 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 |
| Nearside Front Motorcycle structure joining/attachment plate or fastening insecure ENGINE MOUNTING BOLT MISSING (6.1.1 (b) (i)) | 1 |
| Rear Stop lamp adversely affected by the operation of another lamp BRAKE LIGHT OPERATION SWITCHING THE IGNITION ON (4.3.3 (b)) | 1 |
| Front Brake pipe excessively chafed |3.2.B2a| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |