| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 27 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 9 |
| Drive chain excessively loose |6.2.1d| | 9 |
| Drive chain worn to excess |6.2.1e| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Registration plate issues | 4 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 3 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 3 |
| Nearside 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 Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Brake excessively binding |1.2.1 |f|| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Horn not working |1.7.3a| | 2 |
| Rear Suspension component mounting modified so the suspension is inoperative |5.3.3 |c| |ii|| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Front Shock absorber has a serious fluid leak Both front fork seals leaking. Fluid covering fork legs, brake disc and caliper. Front pads and calipers contaminated with fluid. (5.3.2 (b)) | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Brake pedal cannot be applied smoothly foot brake pedal seized & not releasing |3.1.3d| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 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 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Rear Brake locking device insecure rear brake clevis locking pin insecure |3.2.A1e| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Front Direction indicator obscured |1.5.1a| | 1 |
| Offside Front Direction indicator obscured |1.5.1a| | 1 |
| 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 motor bicycle fitted with a standard silencer in average condition |7.1.2| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies Not working |1.3.1a| | 1 |
| Front Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Rear Rear wheel bearings have excessive free play (2.4.A.2c) | 1 |
| Front shock absorber seal failed and leaking oil no oil in both front forks (2.3.3) | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort (3.3.A1c) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. (3.3.A2b) | 1 |
| Offside Throttle operating incorrectly Sticking (6.2.7 (a) (i)) | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Front Shock absorber has a serious fluid leak both (5.3.2 (b)) | 1 |
| Stop lamp not working brake light not working off either switch (4.3.1 (a) (ii)) | 1 |
| Front All position lamps not working |4.2.1 |a|| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Nearside Front Lower Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Front Lower Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Nearside Front Lower Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Lower Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Rear Lower Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Rear Lower Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Front Lower Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Rear Lower Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Centre Rear Lower Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Shock absorber has a serious fluid leak both |5.3.2 |b|| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.4 |a|| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Front Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Rear All position lamps not working (4.2.1 (a)) | 1 |
| Handlebar excessively deformed bars bent on nearside |2.2.1 |c| |i|| | 1 |
| Exhaust system insecure broken bracket |6.1.2 |a|| | 1 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Suspension arm pin or bush likely to become detached swinging arm (5.3.4 (a) (ii)) | 1 |
| Front Brake lever has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Central Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Offside Front Shock absorber has a serious fluid leak folk seal (5.3.2 (b)) | 1 |
| Front Upper Throttle has a significant change in engine speed whilst moving the steering from lock to lock Cable catching on bars/headlamp support |2.1.4| | 1 |
| Rear Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Offside Position lamp switch insecure |1.1.4b| | 1 |
| Nearside Position lamp switch insecure |1.1.4b| | 1 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected Stiff (2.2.2 (f) (ii)) | 1 |
| Drive belt excessively loose. |6.2.1d| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Brake disc fractured |1.1.14 |a| |ii|| | 1 |
| Front Brake lever is so short that the brake cannot be readily applied |1.1.2 |d|| | 1 |
| Front Brake component worn and seriously reduced in strength Brake caliper mounting bracket rubber missing |worn away| causing excessive movement |3.2.A1| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Dipswitch does not operate immediately when selected on main beam |4.1.3 |b|| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Rear mono-shock insecure |2.4.B.4| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Brake fluid significantly below minimum mark (1.1.10 (d) (ii)) | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Centre Front Lower All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| All position lamps not working |4.2.1 |a|| | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Offside Front Lower Fork yoke insecure Fastener missing (2.2.2 (d) (i)) | 1 |
| Rear Brake excessively binding bind on rear brake (1.2.1 (f)) | 1 |
| Rear Drive chain so worn it is likely to fail drive chain worn (6.1.7 (c) (ii)) | 1 |
| Front Headlamp aim not tested no high beam and low beam (4.1.2 (b)) | 1 |
| Brake hose excessively deteriorated | 1 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Rear Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Rear Drive chain so worn it is likely to fail drive chain worn |6.1.7 |c| |ii|| | 1 |
| Rear Drive chain sprocket so worn it is likely to fail rear sprocket worn |6.1.7 |c| |ii|| | 1 |