| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 58 |
| Registration plate issues | 26 |
| Rear reflector on motorcycle missing |1.4.1| | 15 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 11 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 9 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 9 |
| Drive chain excessively loose |6.2.1d| | 8 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 8 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 6 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Horn not working |1.7.3a| | 4 |
| 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| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Offside Rear Direction indicator not working |1.5.1c| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Offside Rear Footrest missing |6.2.1a| | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Registration plate lamp issues | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Offside Rear Direction indicator insecure |1.5.3b| | 2 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Front Front position lamp missing |1.1.1a| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Front Headlamp aim not tested |4.1.2 |b|| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Drive chain excessively tight |6.1.7 |k| |i|| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Exhaust has part of the system missing clamp |7.1.1a| | 1 |
| Front Stop lamp not working not working from front brake light switch |4.3.1 |a| |ii|| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Rear Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Front Brake disc significantly and obviously worn disc worn out of shape |1.1.14 |a| |i|| | 1 |
| Front Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Rear Brake disc|s| securing bolt|s| missing |3.2.A1g| | 1 |
| All position lamps do not illuminate immediately when switched on rear |1.1.3a| | 1 |
| Front Wheel damaged or distorted to the extent that control of the motorcycle is likely to be adversely affected |5.2.2 |c| |ii|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Front Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Nearside 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 |
| Offside 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 wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Offside Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Front Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Brake lever pivots excessively worn |3.1.3a| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Centre Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Inner Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Offside Front Front suspension assembly component cracked |2.3.1| | 1 |
| Offside Front wheel spindle securing nut locking device insecure |2.3.5a| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Direction indicator incorrect colour |1.5.1b| | 1 |
| Roller brake test indicates excessive fluctuation of brake effort front disc |3.3.A1d| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Lower Rear suspension bush has excessive free play linkage |2.4.A2a|i|| | 1 |
| Stop lamp does not illuminate immediately a brake applies With front brake. |1.3.1a| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Offside Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Nearside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Steering lock stop maladjusted |2.1.3| | 1 |
| Drive chain sprocket carrier worn to excess carrier bearing failed |6.2.1e| | 1 |
| Handlebar handgrip not secure to handlebars. lefthand |2.1.1c| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Front Wheel fixing missing |single fixing| spindle clamp bolt |5.2.1 |a| |ii|| | 1 |
| Central Rear Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition exhaust noise is slightly louder than similar models |7.1.2| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Handlebar mounting excessively deteriorated |flexible type| |2.1.1d| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Central Front Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Central Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Front Front suspension assembly component cracked |2.3.1| | 1 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Brake fluid reservoir fluid not visible lever (1.1.10 (d) (iii)) | 1 |
| Handlebar excessively deformed (2.2.1 (c) (i)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Nearside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Horn not working (7.7 (a)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Headlamp light intensity severely reduced reflector deteriorated (4.1.4 (a)) | 1 |
| Suspension component modified so the suspension is inoperative rear suspension linkage seized (5.3.3 (c) (ii)) | 1 |
| Rear Suspension component modified so the suspension is inoperative rear linkage seized - not returning (5.3.3 (c) (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 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Drive chain horseshoe locking device likely to become detached (6.1.7 (j) (ii)) | 1 |