| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 39 |
| Drive chain excessively loose |6.2.1d| | 23 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 17 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 16 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 16 |
| Rear reflector on motorcycle missing |1.4.1| | 13 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 12 |
| Registration plate issues | 11 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Rear reflector missing (4.8.2 (a) (ii)) | 8 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 7 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Rear reflector on motorcycle obscured |1.4.1| | 6 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| 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)) | 6 |
| 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| | 5 |
| Rear reflector missing |4.8.2 |a| |ii|| | 5 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 5 |
| Drive chain worn to excess |6.2.1e| | 5 |
| Stop lamp remains on when the brakes are released | 5 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 4 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Front Brake excessively binding (1.2.1 (f)) | 4 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Horn not working |1.7.3a| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Rear reflector on motorcycle obscured |1.4.2b| | 3 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear Brake grabbing severely |1.2.1 |c|| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front Hydraulic brake control creeps under load. |3.1.4a| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Drive chain excessively loose |6.1.7 |c| |i|| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Nearside Front Footrest insecure (6.2.12 (a)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Registration plate lamp issues | 2 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Exhaust system insecure |6.1.2 |a|| | 1 |
| Stop lamp not working hand control |4.3.1 |a| |ii|| | 1 |
| Throttle operating incorrectly sticks on |6.2.7 |a| |i|| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Rear Position lamp light intensity significantly reduced |4.2.3 |a| |ii|| | 1 |
| Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Floor brake test indicates a sticking brake front and rear |3.3.C2c| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Throttle operating incorrectly with handles turned to the right the throttle sticks |6.2.1f| | 1 |
| Stop lamp does not illuminate immediately a brake applies Front brake |1.3.1a| | 1 |
| Brake hose is likely to be fouled or trapped by moving parts Front brake hose cable tied to fork leg, bracket not connected |3.2.B2c| | 1 |
| Floor brake test indicates a sticking brake Front brake |3.3.C2c| | 1 |
| Front Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Front An item not tested |Manual| | 1 |
| Front 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 Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front wheel spindle loose |2.3.3a| | 1 |
| Front wheel spindle securing nut locking device insecure |2.3.3a| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Headlamp incorrect colour |1.2.1| | 1 |
| Brake linkage has abnormal movement due to excessive wear |3.2.A1i| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride torque arm. |6.2.1h| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. nearside grip loose |2.1.1c| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam no light on dip |1.2.2a|i|| | 1 |
| Front Headlamp at least one does not illuminate on main beam no light on main |1.2.2a|ii|| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear Brake lever excessively corroded |3.2.A1c| | 1 |
| Stop lamp does not illuminate immediately a brake applies front brake |1.3.1a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Central Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Nearside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Rear Lower Shock absorber has an excessively worn bush |5.3.2 |c|| | 1 |
| Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Brake component is severely distorted rear brake pedal bent |3.1.5| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Front Lower Footrest missing |6.2.1a| | 1 |
| Centre Front Upper Riders seat insecure |6.2.1a| | 1 |
| Nearside Rear Upper Drive chain excessively loose |6.2.1d| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Handlebar fractured |2.2.1 |c| |i|| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Front Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Hazard warning switch inoperative missing |4.4.2 |a| |ii|| | 1 |
| Rear reflector missing must have 2 |4.8.2 |a| |ii|| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Brake locking device insecure |3.2.A1e| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick sticking on worn out |3.2.A1f|i|| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies switch faulty |1.3.1a| | 1 |
| Front Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Floor brake test indicates a binding brake Front |3.3.C2c| | 1 |
| Stop lamp does not illuminate immediately a brake applies Front |1.3.1a| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Nearside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Front Brake grabbing severely |1.2.1 |c|| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Offside Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Front position lamp incorrect colour headlamp |1.1.2a| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies control |1.3.1a| | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Front Stop lamp missing (4.3.1 (a) (ii)) | 1 |
| Nearside Rear Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Offside Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Nearside Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear All direction indicators obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Stop lamp not working front brake operation (4.3.1 (a) (ii)) | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front brake disc in such a condition that it is seriously weakened | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Front Valve stem seriously misaligned (5.2.3 (j)) | 1 |
| Shock absorber has a serious fluid leak ns / os (5.3.2 (b)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Brake grabbing severely (1.2.1 (c)) | 1 |
| Stop lamp not working rear brake (4.3.1 (a) (ii)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Indicator switch inoperative (4.4.2 (a) (ii)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock Front master brake line (2.1.4 (b)) | 1 |
| Nearside Front Lower Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Central Front Upper Position lamp not working (4.2.1 (a)) | 1 |
| Central Front Lower Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Fuel hose leaking (6.1.3 (b) (i)) | 1 |
| Front Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Throttle operating incorrectly sticking (6.2.7 (a) (i)) | 1 |
| Offside Lower Stop lamp not working foot control (4.3.1 (a) (ii)) | 1 |
| Nearside Front Brake caliper excessively weakened by corrosion (1.1.16 (d) (i)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Shock absorber has a serious fluid leak right hand (5.3.2 (b)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| All direction indicators adversely affected by the operation of another lamp earth fault ? (4.4.3 (b)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Front Brake lever insecure loose (1.1.2 (e) (i)) | 1 |
| Front Stop lamp not working switch disconnected (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp not working switch adjustment (4.3.1 (a) (ii)) | 1 |
| Exhaust has a major leak of exhaust gases front manifold. (6.1.2 (a)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Offside Rear Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Central Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |