| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 47 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 22 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 19 |
| Drive chain excessively loose |6.2.1d| | 18 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 18 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Registration plate issues | 13 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 12 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 12 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Riders seat insecure |6.2.1a| | 10 |
| Headlamp insecure |1.2.3b| | 9 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 8 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Drive chain worn to excess |6.2.1e| | 6 |
| Horn not working |1.7.3a| | 6 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 5 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 5 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 5 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 3 |
| Offside Footrest missing |6.2.1a| | 3 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 3 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 3 |
| Nearside Footrest insecure |6.2.1a| | 3 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 2 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 2 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear Brake pedal is inoperative |3.1.3c| | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 2 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front Wheel spoke cracked. |4.2.1b| | 2 |
| Nearside Front Footrest missing |6.2.1a| | 2 |
| Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 2 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Offside Footrest insecure |6.2.1a| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 2 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Brake pedal cannot be released smoothly |3.1.3d| | 2 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| 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 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Offside Front Footrest insecure (6.2.12 (a)) | 1 |
| Rear Wheel bearing has excessive play sprocket carrier bearing (5.1.3 (a) (i)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Footrest missing Footrest rubber missing (6.2.12 (a)) | 1 |
| Rear reflector on motorcycle insecure |1.4.2c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Stop lamp missing |1.3.3a| | 1 |
| Rear Brake lever pivot has excessive free play |1.1.1 |b|| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Rear Suspension arm corroded and seriously weakened |5.3.3 |b| |i|| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Drive chain sprocket carrier worn to excess bearing of |6.2.1e| | 1 |
| Rear Brake lever not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Front Brake caliper inadequately mounted (1.1.16 (c) (i)) | 1 |
| Front Fork yoke excessively deformed (2.2.2 (d) (i)) | 1 |
| Front Wheel excessively distorted (5.2.2 (c) (i)) | 1 |
| Offside Front Brake excessively binding (1.2.1 (f)) | 1 |
| Handlebar excessively deformed (2.2.1 (c) (i)) | 1 |
| Registration plate lamp issues | 1 |
| Motorcycle structure joining/attachment plate or fastening insecure Top Box Plate insecure. Likely to become detached (6.1.1 (b) (i)) | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Drive chain sprocket so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Brake pivot has restricted free movement rear brake pedal siezed |1.1.15 |e|| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Front Footrest insecure |6.2.12 |a|| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Rear All position lamps not working |4.2.1 |a|| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Nearside Direction indicators not working front and rear |1.5.1c| | 1 |
| Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Upper Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Rear Upper Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Central Lower Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Front Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Front Wheel spoke excessively bent |4.2.1b| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Front Headlamp damaged and function impaired |1.2.3a| | 1 |
| Stop lamp does not illuminate immediately a brake applies CHANGED BULB |1.3.1a| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Nearside Drive chain worn to excess |6.2.1e| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear Brake lagging in operation (1.2.1 (d)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Offside Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Stop lamp not working REAR SWITCH (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp not working FRONT SWITCH (4.3.1 (a) (ii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear Shock absorber has negligible damping effect Seized suspension (5.3.2 (b)) | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Headlamp insecure |4.1.1 |c|| | 1 |
| Nearside Rear Footrest missing |6.2.12 |a|| | 1 |
| Offside Rear Footrest missing |6.2.12 |a|| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Footrest missing (6.2.12 (a)) | 1 |
| Drive chain sprocket excessively loose Sprocket carrier has exessive play (6.1.7 (c) (i)) | 1 |
| Front Stop lamp switch with a delay in operation |4.3.2 |a| |ii|| | 1 |
| Rear Brake lever pivot excessively tight |1.1.1 |a|| | 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 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear Lower Brake locking device missing |3.2.A1e| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Front Footrest insecure |6.2.1a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies foot lever |1.3.1a| | 1 |
| Nearside Front Motorcycle structure adversely modified |6.1.1b| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Brake performance not tested |3.3| | 1 |
| Rear Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Exhaust mounting does not fully support the exhaust system mounting broken |7.1.1.c| | 1 |
| Front Wheel damaged significantly reducing the original strength |4.2.1a| | 1 |
| Rear Brake drum|s| cracked |3.2.A1g| | 1 |
| Rear Brake drum|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Nearside Handlebar handgrip missing |2.1.1c| | 1 |
| Offside Handlebar handgrip missing |2.1.1c| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Footrest insecure rubber split |6.2.1a| | 1 |
| Rear Wheel spoke missing Spokes missing |5.2.2 |d|| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Front Footrest insecure footrest rubber insecure |6.2.1a| | 1 |
| Offside Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Brake lever pivot excessively tight (1.1.1 (a)) | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Brake rod insecure torque arm split pin missing (1.1.15 (c)) | 1 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Rear Wheel spoke missing |4.2.1b| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Rear Built up wheel has a bolt/s missing |4.2.1c| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Motorcycle structure joining/attachment plate or fastening insecure screen insecure (6.1.1 (b) (i)) | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Offside Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Nearside Front Brake pedal is inoperative |3.1.3c| | 1 |
| Outer Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Front Wheel more than one fixing loose |5.2.1 |a| |ii|| | 1 |