| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 35 |
| Registration plate issues | 16 |
| Rear reflector on motorcycle missing |1.4.1| | 13 |
| Rear reflector missing (4.8.2 (a) (ii)) | 8 |
| Drive chain excessively loose |6.2.1d| | 8 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 7 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Horn not working (7.7 (a) (ii)) | 5 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Rear Position lamp not working |4.2.1 |a|| | 4 |
| Registration plate lamp issues | 4 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 4 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 4 |
| Rear reflector missing |4.8.2 |a| |ii|| | 4 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 4 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 3 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 3 |
| Rear Brake excessively binding (1.2.1 (f)) | 3 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Drive chain excessively tight |6.1.7 |k| |i|| | 2 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 2 |
| Front Brake disc contaminated |1.1.14 |b|| | 2 |
| Rear Brake disc contaminated |1.1.14 |b|| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 2 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Riders seat insecure (6.2.5 (a) (ii)) | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 2 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 2 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 2 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 2 |
| Brake pedal has insufficient reserve travel |1.1.2 |a|| | 2 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 2 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 2 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Position lamp switch insecure (4.2.2 (b)) | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 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 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Nearside Rear Footrest missing |6.2.12 |a|| | 1 |
| Offside Rear Footrest missing |6.2.12 |a|| | 1 |
| Rear Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front Direction indicator missing (4.4.1 (a) (ii)) | 1 |
| Front Headlamp aim not tested (4.1.2 (b)) | 1 |
| Offside Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Headlamp aim not tested |1.6| | 1 |
| Front Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Suspension component mounting modified so the suspension is inoperative operation defective > `L` plate hitting mudgaurd |5.3.3 |c| |ii|| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear All direction indicators obviously incorrectly positioned rear indicators incorrect spacing |4.4.3 |a|| | 1 |
| Nearside Rear Direction indicator missing (4.4.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator missing (4.4.1 (a) (ii)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen beam Kick up on o/side. (4.1.2 (a)) | 1 |
| Shock absorber has negligible damping effect No movement of rear suspension. (5.3.2 (b)) | 1 |
| Central Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Offside Front Throttle control functioning such that safe operation of the motorcycle is adversely affected |6.2.7 |a| |ii|| | 1 |
| Rear Footrest missing Rear pillion pegs missing (6.2.12 (a)) | 1 |
| Horn not working |1.7.3a| | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Chain guard insecure (6.1.7 (i)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Offside Front Motorcycle structure joining/attachment plate or fastening insecure (6.1.1 (b) (i)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Brake lagging in operation rear brake stays on when applied (1.2.1 (d)) | 1 |
| Rear Brake fluid reservoir fluid not visible silver paint covering level marks |1.1.10 |d| |iii|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Shock absorber has negligible damping effect Does not move. |5.3.2 |b|| | 1 |
| Drive chain horseshoe locking device likely to become detached (6.1.7 (j) (ii)) | 1 |
| Central Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Rear Lower Brake pedal is inoperative |3.1.3c| | 1 |
| Front Handlebar mounting clamp loose |2.1.1a| | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Headlamp light source and lamp not compatible bulb fitted giving incorrect beam pattern (4.1.4 (c)) | 1 |
| Exhaust system insecure (6.1.2 (a)) | 1 |
| Engine mounting/bracket excessively loose (6.1.8 (a) (ii)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Motorcycle structure joining/attachment plate or fastening insecure rear mudguard (6.1.1 (b) (i)) | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Rear Footrest missing N/S and O/S (6.2.12 (a)) | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Front Shock absorber has a serious fluid leak forks |5.3.2 |b|| | 1 |
| Exhaust system insecure |6.1.2 |a|| | 1 |
| Stop lamp not working off front brake |4.3.1 |a| |ii|| | 1 |
| All direction indicators incorrect colour Lens colour deteriorated (4.4.3 (a)) | 1 |
| Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Stop lamp not working Rear brake (4.3.1 (a) (ii)) | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Headlamp aim headlamp deteriorated and function impaired no pattern |1.2.3a| | 1 |
| Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Inner Footrest missing (6.2.12 (a)) | 1 |
| Rear Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 1 |
| Front Inner Footrest insecure (6.2.12 (a)) | 1 |
| Rear Outer Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Rear Inner Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Inner Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Steering headbearing excessively stiff or notchy DANGEROUS. (2.2.2 (f) (i)) | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Central Drive chain excessively loose chain exsesively slack.. (6.1.7 (c) (i)) | 1 |
| Central Rear Brake grabbing severely strong bind on rear brake (1.2.1 (c)) | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Footrest missing both rear (6.2.12 (a)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Central Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Motorcycle structure excessively damaged front engine mount broken and engine twisted in frame and now out of line. |6.1.1a| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Front Brake lever has inadequate reserve travel catches on throttle cable/housing. |3.1.3b| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Direction indicator insecure |1.5.3b| | 1 |
| Front Direction indicator obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Stop lamp adversely affected by the operation of another lamp |4.3.3 |b|| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear Brake disc fractured |1.1.14 |a| |ii|| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Rear Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Rear Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Handlebar handgrip not secure to handlebars. both split and perrished |2.1.1c| | 1 |
| Direction indicators flashing more than 120 times per minute all |1.5.1c| | 1 |
| Fuel system component insecure tank bolt missing |7.2.1b| | 1 |
| Throttle operating incorrectly some times has little or no response then over reves |6.2.1f| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Throttle operating incorrectly Cable snapped |6.2.1f| | 1 |
| Offside Exhaust system insecure |6.1.2 |a|| | 1 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Front Direction indicators not working all indicators off |1.5.1c| | 1 |
| Headlamp reflector seriously defective no paturn (4.1.1 (b) (ii)) | 1 |
| Front All position lamps not working (4.2.1 (a)) | 1 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Brake caliper insecure (1.1.16 (c) (i)) | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Offside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 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 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Central Front Upper Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Headlamp light intensity severely reduced |4.1.4 |a|| | 1 |
| Nearside Front Footrest missing |6.2.12 |a|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam no dipped beam |1.2.2a|i|| | 1 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Nearside Rear Exhaust silencer insecure |8.1.1 |b| |i|| | 1 |
| Central Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| All position lamps not working |4.2.1 |a|| | 1 |
| Nearside Front Lower Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Chain guard fouling another component |6.2.1c| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen no image pattern, led type bulb fitted |1.6.B.1| | 1 |
| Stop lamp not working foot control |4.3.1 |a| |ii|| | 1 |
| Front Wheel excessively distorted (5.2.2 (c) (i)) | 1 |
| Rear Brake disc fractured Cracked (1.1.14 (a) (ii)) | 1 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Front Headlamp light source and lamp not compatible |4.1.4 |c|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected |6.2.7 |a| |ii|| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Front Brake lever is positioned so that the brake cannot be readily applied |1.1.2 |d|| | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Front Motorcycle structure joining/attachment plate or fastening insecure front mudguard missing (6.1.1 (b) (i)) | 1 |
| Rear Motorcycle structure joining/attachment plate or fastening insecure mudguard missing (6.1.1 (b) (i)) | 1 |
| Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| Central Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Rear Lower Brake pedal has insufficient reserve travel |1.1.2 |a|| | 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 |
| Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Stop lamp obscured |1.3.1c| | 1 |
| Front shock absorber seal failed and leaking oil both fork seals |2.3.3| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Wheel bearing play so excessive that directional control is impaired |5.1.3 |a| |ii|| | 1 |
| Drive chain sprocket so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Brake performance not tested contaminated pads |1.2.1 |g|| | 1 |
| Offside Handlebar grip insecure to handlebar throttle |2.2.1 |d| |ii|| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Rear Brake linkage has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 1 |
| Clutch lever shortened so it cannot be readily operated (6.2.7 (b)) | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Front Outer Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Brake lever has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 1 |
| Brake component insecure brake lever (1.1.21 (c)) | 1 |
| Brake pedal insecure (1.1.2 (e) (i)) | 1 |
| Front Brake hose excessively stretched (1.1.12 (b) (ii)) | 1 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Fuel system component leaking lh carb leaking |7.2.1a| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Position lamp missing |4.2.1 |a|| | 1 |
| Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Headlamp lens seriously defective |4.1.1 |b| |ii|| | 1 |
| Offside Rear Lower Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Offside Rear Lower Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Drive chain horseshoe locking device likely to become detached |6.1.7 |j| |ii|| | 1 |
| Offside Front Lower Brake pedal is so short that the brake cannot be readily applied Brake pedal is broken. (1.1.2 (d)) | 1 |
| Brake caliper insecurely mounted and braking performance affected (1.1.16 (c) (ii)) | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |