| Most common failures | No# failures |
|---|
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 24 |
| Headlamp aim out of alignment | 23 |
| Drive chain excessively loose |6.2.1d| | 13 |
| Drive chain worn to excess |6.2.1e| | 9 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 9 |
| Nearside Rear Footrest missing |6.2.1a| | 8 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 8 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Offside Rear Footrest missing |6.2.1a| | 5 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 5 |
| Rear Footrest missing |6.2.1a| | 4 |
| Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Front Position lamp not working (4.2.1 (a)) | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 3 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 3 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Rear Footrest missing (6.2.12 (a)) | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 2 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Offside Rear Footrest insecure |6.2.1a| | 2 |
| Rear reflector on motorcycle obscured |1.4.2b| | 2 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Headlamp insecure |4.1.1 |c|| | 2 |
| Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Direction indicators not working |1.5.1c| | 1 |
| Offside Front Upper Direction indicator not working |1.5.1c| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Clutch lever shortened so it cannot be readily operated. cannot get all fingers on clutch lever |6.2.1g| | 1 |
| Rear Chain guard insecure |6.2.1c| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Front Indicator tell tale not functioning |1.5.2| | 1 |
| Offside Front Indicator tell tale not functioning |1.5.2| | 1 |
| Stop lamp not working foot control (4.3.1 (a) (ii)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Headlamp aim not tested no clear pattern to check (4.1.2 (b)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Exhaust system insecure (6.1.2 (a)) | 1 |
| Motorcycle structure has a fracture which is likely to adversely affect braking or steering bolt missing front fender mud gaurd brocken (6.1.1 (a) (ii)) | 1 |
| Handlebar mounting insecure left hand switch loose (2.2.1 (a) (i)) | 1 |
| Motorcycle structure joining/attachment plate or fastening insecure nut missing clutch lever (6.1.1 (b) (i)) | 1 |
| Front Throttle operating incorrectly Start switch insecure and affecting throttle (6.2.7 (a) (i)) | 1 |
| Rear Wheel hub excessively worn (5.2.1 (b) (i)) | 1 |
| Rear Brake grabbing severely (1.2.1 (c)) | 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 |
| Nearside Rear Footrest insecure (6.2.12 (a)) | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Stop lamp switch with a delay in operation |4.3.2 |a| |ii|| | 1 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Stop lamp does not illuminate immediately a brake applies rear pedal |1.3.1a| | 1 |
| Dipswitch does not operate immediately when selected on dipped beam switch broke (4.1.3 (b)) | 1 |
| Rear Suspension arm ball joint excessively worn swinging arm bushes (5.3.4 (a) (i)) | 1 |
| Rear Stop lamp switch with a delay in operation not working (4.3.2 (a) (ii)) | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Horn not working |1.7.3a| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Brake lever has inadequate reserve travel bent lever |3.1.3b| | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Drive chain sprocket worn to excess Cush drive rubbers excessively worn (6.1.7 (c) (i)) | 1 |
| Front Brake fluid not visible (1.1.10 (d) (iii)) | 1 |
| Rear suspension bush has excessive free play bush have free play |2.4.A2a|i|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Position lamp switch insecure |1.1.4b| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Central Front Exhaust system insecure |6.1.2 |a|| | 1 |
| Lower Brake pedal so insecure that the brake cannot be readily applied foot brake |hitting exhaust| |1.1.2 |e| |ii|| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Offside Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Offside Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Rear Brake lever excessively worn (1.1.15 (b)) | 1 |
| Front Brake component inadequately mounted calliper (1.1.21 (c)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Central Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Front Fuel cap ineffective (6.1.3 (b) (i)) | 1 |
| Rear Rear suspension bush has excessive free play Swinging arm pivot point |2.4.A2a|i|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Front Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Fuel cap leaking Swollen & leaking (6.1.3 (b) (i)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Rear reflector missing Not visible - covered by L plate (4.8.2 (a) (ii)) | 1 |
| Rear Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Outer Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Shock absorber has a serious fluid leak chrome peeling and rusting on fork legs seal leaking (5.3.2 (b)) | 1 |
| Position lamp switch does not operate in accordance with the requirements (4.2.2 (a)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Exhaust system insecure Badly rusted and breaking (6.1.2 (a)) | 1 |
| Front Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 1 |
| Front All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Headlamp aim not tested due to being insecure |4.1.2 |b|| | 1 |
| Rear Footrest missing both |6.2.12 |a|| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies switch |1.3.1a| | 1 |
| Nearside Rear Lower Drive chain excessively loose |6.2.1d| | 1 |
| Centre Rear Lower Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Nearside Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Offside Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Centre Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Headlamp damaged and function impaired |1.2.3a| | 1 |
| Clutch lever shortened so it cannot be readily operated |6.2.7 |b|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Clutch lever bent so it cannot be readily operated. |6.2.1g| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Rear Suspension arm likely to become detached (5.3.3 (a) (ii)) | 1 |
| Brake clevis joint insecure (1.1.15 (c)) | 1 |
| Suspension arm attachment bracket/mounting insecure swing arm play (5.3.3 (a) (i)) | 1 |
| Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Central Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Headlamp at least one does not illuminate on main beam (1.2.2a(ii)) | 1 |
| Front Floor brake test indicates a sticking brake (3.3.C2c) | 1 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Nearside Front Direction indicator not working (1.5.1c) | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Front Suspension arm pin or bush excessively worn swing arm |5.3.4 |a| |i|| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Stop lamp does not illuminate immediately a brake applies from rear brake |1.3.1a| | 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 |
| Roller brake test indicates a sticking brake rear pedal not returning |3.3.A1a| | 1 |
| Fuel hose leaking |6.1.3 |b| |i|| | 1 |
| Position lamp not working brake light showing (4.2.1 (a)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |