| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 29 |
| Registration plate issues | 11 |
| Rear reflector on motorcycle missing |1.4.1| | 7 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 7 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 6 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Offside Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| 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)) | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 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| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Rear Position lamp not working |4.2.1 |a|| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Nearside Front Brake hose leaking fluid |3.2.B4| | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Registration plate lamp issues | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Nearside 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 |
| Offside 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 Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Brake pedal pivot excessively tight |1.1.1 |a|| | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Central Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Outer Front Footrest insecure |6.2.1a| | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Nearside Rear Footrest missing |6.2.12 |a|| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Nearside Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Direction indicator insecure |1.5.3b| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Footrest missing |6.2.1a| | 1 |
| Offside Footrest missing |6.2.1a| | 1 |
| Centre Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Throttle operating incorrectly throttle not returning |6.2.1f| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Nearside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Nearside Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| All position lamps not working Repair Wiring PRS |4.2.1 |a|| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Rear Gradient brake test indicates a sticking brake |3.3.D1c| | 1 |
| Front Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Nearside Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Offside Front Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Offside Rear Drive chain sprocket so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Centre Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |