| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 13 |
| Drive chain excessively loose |6.2.1d| | 7 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 4 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 4 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 4 |
| Front Position lamp not working (4.2.1 (a)) | 3 |
| Front Brake fluid reservoir fluid not visible (1.1.10 (d) (iii)) | 3 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 3 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 3 |
| Horn not working |1.7.3a| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 2 |
| Offside Rear Footrest missing (6.2.12 (a)) | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Headlamp insecure (4.1.1 (c)) | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Registration plate issues | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear Rear reflector reflecting white to the rear (4.8.2 (a) (ii)) | 2 |
| Handlebar excessively deformed (2.2.1 (c) (i)) | 2 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 2 |
| Rear Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Central Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Suspension component pin or bush excessively worn Swingarm Bush |5.3.4 |a| |i|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Fork yoke excessively deformed |2.2.2 |d| |i|| | 1 |
| Front Front mudguard insecure broken and missing |2.3.7| | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Front wheel bearings have excessive free play front |2.3.5b| | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Front Steering linkage locking device ineffective (2.1.3 (d)) | 1 |
| Rear Stop lamp not working adjusted (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Rear Drive chain sprocket so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Brake pedal has insufficient reserve travel Adjuster bolt missing. (1.1.2 (a)) | 1 |
| Brake grabbing severely |1.2.1 |c|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Fuel cap ineffective |6.1.3 |b| |i|| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Front position lamp does not illuminate immediately when switched on Not working |1.1.3a| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock l/h lock. (2.1.4 (b)) | 1 |
| Brake pedal is positioned so that the brake cannot be readily applied too high (1.1.2 (d)) | 1 |
| Fuel system component leaking |6.1.3 |b| |i|| | 1 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Lower Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced Center stand mounting tore from frame (6.1.1 (b) (ii)) | 1 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Suspension arm pin or bush excessively worn swinging arm bushes (5.3.4 (a) (i)) | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Footrest missing both |6.2.1a| | 1 |
| Rear Roller brake test indicates a severely grabbing brake brake out of adjustment |3.3.A1b| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Centre Front Upper Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Rear Footrest insecure locking device missing |6.2.12 |a|| | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 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 (6.1.7 (c) (ii)) | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition Blowing at front section excessively. |7.1.2| | 1 |
| Stop lamp does not illuminate immediately a brake applies From pedal. |1.3.1a| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Headlamp aim not tested Due to headlight not working. |1.6| | 1 |
| Rear wheel bearings have excessive free play Also catching inside on rotation. |2.4.A.2c| | 1 |
| Drive chain excessively loose Links twisted & seized in up position. |6.2.1d| | 1 |
| Rear wheel rotation likely to be impeded Due to rear wheel locking suspect due to wheel bearing failure. |6.2.1b| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Headlamp aim not tested |1.6| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Drive chain excessively loose Drive chain and sprockets worn. |6.2.1d| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride Sprocket locking bolt tabs. |6.2.1h| | 1 |
| Drive chain sprocket carrier worn to excess Cush drive rubbers excessively worn. |6.2.1e| | 1 |
| Footrest missing L/H Pillion footrest missing. |6.2.1a| | 1 |
| Rear suspension bush has excessive free play Swing arm bushes have excessive movement. |2.4.A2a|i|| | 1 |
| Registration plate lamp issues | 1 |
| Fuel hose so insecure there is a risk of fire fuell tap (6.1.3 (a) (ii)) | 1 |
| Suspension component pin or bush excessively worn swing arm (5.3.4 (a) (i)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Drive chain sprocket carrier worn to excess Bolts Loose and 1 Bolt Missing |6.2.1e| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride loose |6.2.1h| | 1 |
| Rear suspension bush has excessive free play swinging arm |2.4.A2a|i|| | 1 |
| Stop lamp not working Foot brake (4.3.1 (a) (ii)) | 1 |
| Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Suspension attachment bracket/mounting insecure rear swing arm bearings (5.3.3 (a) (i)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Nearside Rear All direction indicators incorrect colour |4.4.3 |a|| | 1 |
| Nearside Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Brake component inadequately mounted brake hose (1.1.21 (c)) | 1 |
| Brake pedal has insufficient reserve travel fouling exhaust pipe (1.1.2 (a)) | 1 |
| Stop lamp not working from front control (4.3.1 (a) (ii)) | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Throttle operating incorrectly mounting to handlebar loose |6.2.7 |a| |i|| | 1 |
| Offside Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Offside Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Nearside Rear Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Lower Engine mounting/bracket excessively loose (6.1.8 (a) (ii)) | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Drive chain sprocket excessively loose |6.1.7 |c| |i|| | 1 |
| Offside Front Direction indicator lens defective such that the emitted light is adversely affected (4.4.1 (b) (ii)) | 1 |
| Rear Brake lever is positioned so that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |