| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 40 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 20 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 20 |
| Drive chain excessively loose |6.2.1d| | 20 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 18 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 18 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 16 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 15 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 14 |
| Rear reflector on motorcycle missing |1.4.1| | 14 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 13 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 11 |
| Horn not working |1.7.3a| | 9 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 9 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 8 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Drive chain worn to excess |6.2.1e| | 8 |
| Steering headbearing has excessive free play |2.2.2| | 8 |
| Throttle operating incorrectly |6.2.1f| | 7 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Registration plate lamp issues | 6 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Registration plate issues | 5 |
| Nearside Front Direction indicator not working |1.5.1c| | 5 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 5 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Rear Drive chain worn to excess |6.2.1e| | 4 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 4 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 4 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 4 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Rear Brake excessively binding (1.2.1 (f)) | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 3 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 3 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 3 |
| Offside Front Direction indicator insecure |1.5.3b| | 3 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 3 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 3 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Offside Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Offside Handlebar deformed |2.1.1b| | 2 |
| Fuel pipe union leaking (6.1.3 (b) (i)) | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Front Brake disc|s| cracked |3.2.A1g| | 2 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Rear mono-shock pivot seized |2.4.B.4| | 2 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 2 |
| Nearside Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Nearside Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 2 |
| Lower Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Front Brake caliper leaking (1.1.16 (b) (i)) | 1 |
| Front Brake caliper operating mechanism has excessive travel (1.1.16 (e) (i)) | 1 |
| Front Stop lamp does not illuminate immediately a brake applies from front lever |1.3.1a| | 1 |
| Throttle operating incorrectly sticking (6.2.7 (a) (i)) | 1 |
| Fuel cap sealing washer torn |7.2.2c| | 1 |
| Drive chain sprocket carrier worn to excess cush drive |6.2.1e| | 1 |
| Upper Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Nearside Front Handlebar deformed |2.1.1b| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Throttle operating incorrectly sticking on lock |6.2.1f| | 1 |
| Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Brake disc|s| securing bolt|s| loose |3.2.A1g| | 1 |
| Nearside Front suspension assembly component loose |2.3.1| | 1 |
| Offside Front suspension assembly component loose |2.3.1| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Rear suspension component loose |2.4.A.1a| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Fuel pipe leaking (6.1.3 (b) (i)) | 1 |
| Fuel system component leaking excessively or a risk of fire Leaking onto exhaust (6.1.3 (b) (ii)) | 1 |
| Fuel system component leaking excessively or a risk of fire (6.1.3 (b) (ii)) | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Offside Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Offside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Wheel fixing missing |single fixing| |5.2.1 |a| |ii|| | 1 |
| Nearside Rear Wheel more than one fixing loose adjuster |5.2.1 |a| |ii|| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Rear Brake performance not tested |3.3| | 1 |
| Front Direction indicator missing both (4.4.1 (a) (ii)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Position lamp switch insecure switch assembly behind faring and could affect steering movement (4.2.2 (b)) | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Front Front wheel bearings have excessive free play |2.3.5b| | 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 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Nearside Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Offside Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front position lamp does not illuminate immediately when switched on blown bulb |1.1.3a| | 1 |
| Drive chain excessively loose now adjusted |6.2.1d| | 1 |
| Upper Fork yoke cracked |2.1.1b| | 1 |
| Lower Rear suspension component seized |2.4A2a|ii|| | 1 |
| Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Steering lock stop ineffective |2.1.3| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected revs stick in either lock (6.2.7 (a) (ii)) | 1 |
| Rear Shock absorber has an excessively worn bush lower shock bush (5.3.2 (c)) | 1 |
| Nearside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Nearside Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Front Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Direction indicator insecure ALL |1.5.3b| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Offside Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Offside Front Throttle operating incorrectly |6.2.1f| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Front Handlebar deformed |2.1.1b| | 1 |
| Offside Front Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Offside Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Offside Rear Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Rear Rear suspension component seized |2.4A2a|ii|| | 1 |
| Offside Rear Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Nearside Rear Motorcycle structure corroded to the extent that the rigidity of the assembly is significantly reduced (6.1.1 (c) (i)) | 1 |
| Nearside Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Rear Brake component is excessively corroded |3.1.5| | 1 |
| Nearside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Front wheel spindle loose |2.3.5a| | 1 |
| Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Nearside Rear Drive chain horseshoe locking device likely to become detached (6.1.7 (j) (ii)) | 1 |
| Front Lower Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced fork leg bolts missing (6.1.1 (b) (ii)) | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Front Riders seat insecure |6.2.1a| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Nearside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Brake disc contaminated (1.1.14 (b)) | 1 |
| Front Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Rear Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Rear Direction indicator missing |1.5.1a| | 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 |
| Front Brake lever mounting insecure |3.1.2a| | 1 |
| Front Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Front Exhaust mounting missing |7.1.1c| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Centre Rear Lower Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Centre Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Rear suspension bearing excessively deteriorated |2.4A.2a|i|| | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Offside Front Direction indicator incorrect colour |4.4.3 |a|| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls front brake light (4.3.2 (a) (iii)) | 1 |
| Offside Front Brake lever insecure |3.1.2a| | 1 |
| Centre Front Upper Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Centre Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Front Lower Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Front Lower Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Upper Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Offside Rear Lower Footrest missing |6.2.1a| | 1 |
| Nearside Rear Lower Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Rear Lower Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Nearside Rear Upper Chain guard insecure |6.2.1c| | 1 |
| Nearside Rear Lower Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Rear Lower Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Front Upper Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Headlamp aim not tested dip beam not working |4.1.2 |b|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Central Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Throttle operating incorrectly not returning worse on left hand lock (6.2.7 (a) (i)) | 1 |
| Rear Wheel fixing missing (single fixing) split pin missing (5.2.1 (a) (ii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Chain guard fouling another component |6.2.1c| | 1 |
| Rear Lower Suspension rod pin or bush likely to become detached (5.3.4 (a) (ii)) | 1 |
| Rear Brake fluid contaminated |1.8 |a|| | 1 |
| Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride Spindle nut split pin missing |6.2.1h| | 1 |
| Rear suspension bush excessively deteriorated BOTTOM BUSHES |2.4.A2a|i|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |