| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 39 |
| Registration plate issues | 21 |
| Rear reflector on motorcycle missing |1.4.1| | 21 |
| Horn not working |1.7.3a| | 10 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 10 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 8 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 8 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 6 |
| Headlamp insecure |1.2.3b| | 5 |
| Brake hose excessively deteriorated | 5 |
| Drive chain excessively tight |6.2.1d| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 4 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Front Steering headbearing has excessive free play |2.2.2| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Fuel system component leaking |7.2.1a| | 3 |
| Front Horn not working |1.7.3a| | 3 |
| 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| | 3 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Fuel cap sealing washer missing |7.2.2c| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Nearside Footrest missing |6.2.1a| | 2 |
| Rear Brake locking device missing |3.2.A1e| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Offside Rear Footrest insecure |6.2.1a| | 2 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Offside Footrest insecure |6.2.1a| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |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| | 2 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Direction indicator not working |1.5.1c| | 2 |
| Horn is not a constant note |1.7.3c| | 2 |
| Fuel system component insecure |7.2.1b| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Horn is not continous or uniform |1.7.3c| | 2 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Front Front position lamp insecure |1.1.1c| | 1 |
| Rear Lower Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Offside Rear All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Nearside Front Suspension rod corroded and seriously weakened fork |5.3.3 |b| |i|| | 1 |
| Offside Front Suspension rod corroded and seriously weakened fork |5.3.3 |b| |i|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Drive chain worn to excess stiff links |6.1.7 |c| |i|| | 1 |
| Nearside Rear Suspension arm ball joint excessively worn |5.3.4 |a| |i|| | 1 |
| Offside Rear Suspension arm ball joint excessively worn |5.3.4 |a| |i|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Front Decelerometer brake test indicates a binding brake |3.3.E1d| | 1 |
| Rear Decelerometer brake test indicates a binding brake |3.3.E1d| | 1 |
| Rear Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Offside Footrest missing |6.2.1a| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Offside Indicator tell tale not functioning |1.5.2| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Headlamp damaged and function impaired |1.2.3a| | 1 |
| Nearside Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Nearside Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Centre Front Front position lamp missing |1.1.1a| | 1 |
| Centre Front Seat insecure |6.2.1a| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Offside Rear Brake locking device missing |3.2.A1e| | 1 |
| Nearside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Stop lamp does not illuminate immediately a brake applies front brake light switch not working |1.3.1a| | 1 |
| Brake locking device missing rear brake |3.2.A1e| | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Offside Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Brake performance not tested |3.3| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| An item not tested |Manual| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Offside Front Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Offside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Nearside Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Gradient brake test indicates a sticking brake |3.3.D1c| | 1 |
| Offside Front Brake component leaking fluid |3.2.B4| | 1 |
| Front Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Brake hose leaking fluid |3.2.B4| | 1 |
| Fuel system component leaking excessively or a risk of fire |6.1.3 |b| |ii|| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Offside Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Centre Front Stop lamp missing |1.3.3a| | 1 |
| Centre Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Centre Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Centre Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Centre Rear Drive chain worn to excess |6.2.1e| | 1 |
| Fuel pipe leaking excessively or a risk of fire |6.1.3 |b| |ii|| | 1 |
| Front Indicator switch defective |1.5.4| | 1 |
| Rear Indicator switch defective |1.5.4| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Rear Brake caliper operating mechanism has excessive travel |1.1.16 |e| |i|| | 1 |
| Rear Brake caliper leaking and braking performance affected |1.1.16 |b| |ii|| | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Fuel tank insecure |6.1.3 |a| |i|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected found on lock to lock test |6.2.7 |a| |ii|| | 1 |
| Offside Front Lower Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Centre front brake binding |3.7.B.1| | 1 |
| Fuel system component leaking |7.2.3| | 1 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 1 |
| Hazard warning switch faulty |1.4.B.1d| | 1 |
| Nearside Rear Braking system leaking |3.6.A.1| | 1 |
| Offside Inner Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 1 |
| Nearside Rear reflector missing |1.5.1a| | 1 |
| Offside Rear reflector missing |1.5.1a| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Centre Headlamp aim beam image kick up to the offside |1.6.B1| | 1 |
| Horn not working |1.6.2a| | 1 |
| Nearside Footrest insecure |9.6.1| | 1 |
| Exhaust has part of the system excessively deteriorated |7.1.1a| | 1 |
| Nearside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Fuel system component insecure |7.2.1b| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Rear Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Centre Front Horn not working |1.7.3a| | 1 |
| Outer Front Steering headbearing has excessive free play |2.2.2| | 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 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Front Headlamp incorrect colour Headlamp has orange output. |4.1.4 |a|| | 1 |
| Front Steering headbearing has excessive wear or free play Steering head bearings has free play |2.2.2 |f| |i|| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Nearside Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Offside Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Rear Stop lamp not working foot (4.3.1 (a) (ii)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Rear Brake caliper leaking (1.1.16 (b) (i)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |