| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 18 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Drive chain excessively loose |6.2.1d| | 11 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 8 |
| Registration plate issues | 8 |
| Front wheel bearings have excessive free play |2.3.5b| | 7 |
| Front wheel bearings are excessively rough |2.3.5b| | 6 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Throttle operating incorrectly |6.2.1f| | 6 |
| Registration plate lamp issues | 5 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Offside Rear Footrest missing |6.2.1a| | 5 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Drive chain worn to excess |6.2.1e| | 5 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Nearside Rear Footrest missing |6.2.1a| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Rear Footrest missing |6.2.1a| | 3 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Horn not working |1.7.3a| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Nearside Rear Footrest insecure |6.2.1a| | 2 |
| Front Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Rear wheel insecure |4.2.3b| | 2 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Front Brake locking device insecure |3.2.A1e| | 2 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 2 |
| Offside Rear Footrest missing (6.2.12 (a)) | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Rear Brake excessively binding |1.2.1 |f|| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Brake hose excessively deteriorated | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Fairing so located that it is likely to impede the steering |2.1.2e| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Fuel system component leaking |6.1.3 |b| |i|| | 1 |
| Inner Rear Lower Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Rear Lower Brake back plate|s| insecure |3.2.A1j| | 1 |
| Offside Front Lower Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Motorcycle structure cracked |6.1.1a| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Front position lamp incorrect colour shows blue light at frontj |1.1.2a| | 1 |
| Offside Front Direction indicator insecure not fixed to fairing,hanging from wires |1.5.3b| | 1 |
| Stop lamp emits other than a steady red light from rear stop swutch,comes on/off/on/off as pedal is pressed |1.3.1b| | 1 |
| Front Brake fluid reservoir leaking hydraulic fluid glass in master cylinder cracked and leaks when pumped |3.2.B1e| | 1 |
| Steering lock stop maladjusted lockstop when bars turned to the right slighly off,steering touches brake hose slightly before hitting lock stop |2.1.3| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition baffle removed.making excess noisy |7.1.2| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Nearside Rear All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Central Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Nearside Exhaust system insecure |6.1.2 |a|| | 1 |
| Nearside Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Nearside Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Rear Position lamp likely to become detached |4.2.1 |c| |ii|| | 1 |
| Roller brake test brake efficiency less than 27.5% overall |1.2.2 |a| |ii|| | 1 |
| Offside Position lamp switch insecure |1.1.4b| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies needs adjustment |1.3.1a| | 1 |
| Handlebar handgrip not secure to handlebars. switch gear/ throttle clamp location pin missing |2.1.1c| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Stop lamp does not illuminate immediately a brake applies rear lever switch |1.3.1a| | 1 |
| Throttle operating incorrectly stiff movement of twist grip |6.2.1f| | 1 |
| Motorcycle structure excessively damaged rear mudgaurd loose |6.1.1a| | 1 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking handle bar controls insecure both sides |6.1.1c| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Offside Front Lower Fairings insecure and likely to impede the steering hugger insucure |2.1.2e| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Nearside Front Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Centre Rear Exhaust mounting missing |7.1.1c| | 1 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Handlebar mounting insecure |2.2.1 |a| |i|| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Rear Brake hose leaking fluid |3.2.B4| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Wheel excessively distorted (5.2.2 (c) (i)) | 1 |
| Rear Suspension arm pin or bush excessively worn swing arm movement (5.3.4 (a) (i)) | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Position lamp switch insecure |1.1.4b| | 1 |
| Nearside Indicator switch insecure |1.5.4| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Front Brake caliper insecure (1.1.16 (c) (i)) | 1 |
| Rear Brake caliper insecure (1.1.16 (c) (i)) | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Rear Direction indicator incorrect colour both sides |1.5.1b| | 1 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Centre Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Suspension arm pin or bush excessively worn movement in rear swinging arm bushes. (5.3.4 (a) (i)) | 1 |
| Rear Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Front suspension fouling which affects the movement of the front suspension. L plate fouling mudgaurd |2.3.6a| | 1 |
| Brake lever is positioned so that the brake cannot be readily applied |1.1.2 |d|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen NO BEAM PATTERN |1.6.B.1| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Nearside Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Offside Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Brake performance not tested |1.2.1 |g|| | 1 |
| Front Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Rear Brake fluid contaminated (1.8 (a)) | 1 |
| Rear Drive chain horseshoe locking device likely to become detached (6.1.7 (j) (ii)) | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Front Handlebar mounting insecure |2.2.1 |a| |i|| | 1 |
| Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Drive chain excessively loose Loose and in need of lubrication |6.2.1d| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Nearside Handlebar restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component head stock bearings |2.3.4| | 1 |
| Rear Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Brake lever has restricted free movement hitting throttle assembly (1.1.15 (e)) | 1 |
| Steering operation linkage fouling when handlebars turned from lock to lock hitting cables and wires (2.1.4 (a)) | 1 |
| Seat insecure |6.2.1a| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Offside Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Front Brake hose excessively damaged |1.1.12 |b| |ii|| | 1 |
| Rear Drive chain sprocket so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Brake grabbing severely |1.2.1 |c|| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Footrest insecure |6.2.1a| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride rear engine bolt |6.2.1h| | 1 |
| Motorcycle structure excessively damaged front engine mount |6.1.1a| | 1 |
| Offside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies Handle bar lever |1.3.1a| | 1 |
| Stop lamp does not illuminate immediately a brake applies with foot pedal |1.3.1a| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride rear sprocket |6.2.1h| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Centre Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Brake component has restricted free movement and operation is likely to be impeded front leaver |3.2.A1h| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear Brake component defective due to a deliberate modification which significantly reduces the original strength |3.1.5| | 1 |
| Centre Exhaust mounting missing |7.1.1c| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s switch is operating oppositely |1.2.2b|ii|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Offside Position lamp switch insecure loose on handle bars. (4.2.2 (b)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Drive chain sprocket so loose it is likely to fail bolts loose. (6.1.7 (c) (ii)) | 1 |
| Rear Brake caliper|s| securing bolt|s| missing lock tabs |3.2.A1j| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Offside Brake lever is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride sprocket fixing bolt missing and loose |6.2.1h| | 1 |
| Rear suspension bush has excessive free play Swingarm bushes |2.4.A2a|i|| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Offside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Chain guard insecure (6.1.7 (i)) | 1 |
| Front Footrest insecure |6.2.1a| | 1 |
| Front Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Hydraulic brake control creeps under load. |3.1.4a| | 1 |