| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 38 |
| Drive chain excessively loose |6.2.1d| | 18 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 17 |
| Front wheel bearings have excessive free play |2.3.5b| | 14 |
| Front wheel bearings are excessively rough |2.3.5b| | 13 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 12 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Steering headbearing has excessive free play |2.2.2| | 11 |
| Horn not working |1.7.3a| | 9 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 8 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 7 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Drive chain worn to excess |6.2.1e| | 7 |
| Registration plate issues | 7 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 6 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 6 |
| Drive chain excessively tight |6.2.1d| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 6 |
| Offside Front Footrest insecure |6.2.1a| | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 5 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 5 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 5 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Direction indicator incorrect colour |1.5.1b| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Rear Footrest missing |6.2.1a| | 4 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 4 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 3 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 3 |
| Nearside Front Direction indicators not working |1.5.1c| | 3 |
| Rear Direction indicator incorrect colour |1.5.1b| | 3 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Offside Front Direction indicator missing |1.5.1a| | 2 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Chain guard insecure |6.2.1c| | 2 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Offside Steering lock stop ineffective |2.1.3| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Direction indicator not working |1.5.1c| | 2 |
| Nearside Direction indicator incorrect colour |1.5.1b| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Chain guard fouling another component |6.2.1c| | 2 |
| Offside Handlebar deformed |2.1.1b| | 2 |
| Rear Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Brake excessively binding |1.2.1 |f|| | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| Front Brake lever insecure |3.1.2a| | 2 |
| Offside Front Direction indicator insecure |1.5.3b| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Offside Front Brake lever is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Rear Drive chain sprocket so loose it is likely to fail all bolts loose (6.1.7 (c) (ii)) | 1 |
| Registration plate lamp issues | 1 |
| Rear Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Brake master cylinder severely damaged |3.2.B1b| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Brake hose damaged | 1 |
| Front Brake hose fouling |3.2.B3b| | 1 |
| Front Drive chain excessively loose |6.2.1d| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Front Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 1 |
| Rear Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 1 |
| Front Shock absorber has a serious fluid leak both fork seals |5.3.2 |b|| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Offside Rear Brake indicates excessive fluctuation of brake effort Badly warped disc (1.2.1 (e)) | 1 |
| Nearside Front Headlamp aim not tested dip beam not working (4.1.2 (b)) | 1 |
| Offside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Handlebar restricted in free movement from lock to lock Front brake hitting inside fairing on full L/H lock |2.1.4 |c|| | 1 |
| Drive chain so worn it is likely to fail Horseshoe clip missing |6.1.7 |c| |ii|| | 1 |
| Footrest insecure R/H front |6.2.12 |a|| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Brake lever is positioned so that the brake cannot be readily applied on r/h lock |3.1.3c| | 1 |
| Front Fairings insecure and likely to impede the steering all panels insecure |2.1.2e| | 1 |
| Seat insecure pillion |6.2.1a| | 1 |
| Rear Brake pedal mounting cracked . |3.1.2c| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Offside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Rear Brake pipe inadequately supported |3.2.B2b| | 1 |
| Steering linkage has excessive free play |2.2.2| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Centre Front Front suspension assembly component loose |2.3.1| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Front Brake lever is inoperative |3.1.3c| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Rear Direction indicator incorrect colour |4.4.3 |a|| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Rear Brake disc contaminated |1.1.14 |b|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride split link fitted wrong |6.2.1h| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Chain guard insecure (6.1.7 (i)) | 1 |
| Vehicle identification number not displayed |0.2 |a|| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected |6.2.7 |a| |ii|| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Rear Brake master cylinder has a seized master cylinder pivot. |3.2.B5| | 1 |
| Nearside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Rear position lamp incorrect colour |1.1.2b| | 1 |
| Centre Front Upper Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Outer Front Lower Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Upper Direction indicator incorrect colour |1.5.1b| | 1 |
| Dipswitch does not operate immediately when selected on dipped beam |4.1.3 |b|| | 1 |
| Dipswitch does not operate immediately when selected on main beam |4.1.3 |b|| | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 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 |
| Offside Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Fuel tank insecure (6.1.3 (a) (i)) | 1 |
| Drive chain so worn it is likely to fail and very rusty (6.1.7 (c) (ii)) | 1 |
| Fuel system component leaking Carburettor leaking badly (6.1.3 (b) (i)) | 1 |
| Roller brake test brake efficiency less than 27.5% overall (1.2.2 (a) (ii)) | 1 |
| Central Rear Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Offside Rear Exhaust silencer likely to become detached |8.1.1 |b| |ii|| | 1 |
| Nearside Front Horn not working |7.7 |a| |ii|| | 1 |
| Nearside Rear Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Central Rear Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Central Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Central Front Horn not working |1.7.3a| | 1 |
| Nearside Rear Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Nearside Rear Drive chain sprocket so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Offside Front Brake lever pivots excessively worn |3.1.3a| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Steering lock stop maladjusted |2.1.3| | 1 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Front Brake master cylinder insecure (1.1.10 (c)) | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Nearside Handlebar fouling on the fuel tank or bodywork on full lock Clutch leaver fowling on frame (2.1.4 (b)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 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 Footrest missing |6.2.12 |a|| | 1 |
| Front Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Pillion seat insecure |6.2.6 |a| |ii|| | 1 |
| Rear Brake disc fractured |1.1.14 |a| |ii|| | 1 |
| Headlamp light intensity severely reduced |4.1.4 |a|| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Brake lever has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 1 |
| Nearside Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Brake pedal attachment screws missing. |3.1.2b| | 1 |
| Front Headlamp aim not tested |1.6| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Front Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Rear Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Rear Brake pedal 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 Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Rear position lamp deteriorated and function impaired not working |1.1.1b| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking front fender mounting broken |6.1.1c| | 1 |
| Drive chain sprocket carrier worn to excess sprocket mountings loose |6.2.1e| | 1 |
| Lower Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Offside Front mudguard insecure |2.3.7| | 1 |
| Front Lower Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front Shock absorber has a serious fluid leak front fork seals leaking onto front discs (5.3.2 (b)) | 1 |
| Front Brake lever mounting insecure |3.1.2a| | 1 |
| Headlamp incorrect colour |1.2.1| | 1 |
| Rear Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Rear Built up wheel has a bolt/s missing |4.2.1c| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Stop lamp not working Front switch |4.3.1 |a| |ii|| | 1 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock On right hand full lock ,bars hit fuel tank ,and apply starter switch |2.1.4 |b|| | 1 |
| Rear Direction indicator missing |4.4.1 |a| |ii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Exhaust system insecure Lower bolt missing |6.1.2 |a|| | 1 |
| Motorcycle structure is fractured and structural rigidity is significantly reduced Fairing broken and loose at 2 points ,likely to foul footrest or chain and steering |6.1.1 |a| |i|| | 1 |