| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 57 |
| Rear reflector missing (4.8.2 (a) (ii)) | 34 |
| Registration plate lamp issues | 29 |
| Registration plate issues | 17 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 16 |
| Front Brake excessively binding (1.2.1 (f)) | 11 |
| Horn not working (7.7 (a)) | 10 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 9 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 9 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 9 |
| Horn not working (7.7 (a) (ii)) | 8 |
| Rear reflector missing |4.8.2 |a| |ii|| | 8 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 7 |
| Rear Brake excessively binding (1.2.1 (f)) | 7 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 6 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 4 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 4 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 4 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 4 |
| Stop lamp remains on when the brakes are released | 4 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 4 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 3 |
| Horn not working |7.7 |a| |ii|| | 3 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Rear Brake lagging in operation (1.2.1 (d)) | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 3 |
| Front Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 3 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Rear Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 3 |
| Rear Wheel spindle locking device missing (5.2.1 (d)) | 3 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 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 |
| Offside Front Position lamp not working (4.2.1 (a)) | 2 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 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 Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Nearside Front Brake disc contaminated (1.1.14 (b)) | 2 |
| Offside Front Brake disc contaminated (1.1.14 (b)) | 2 |
| Rear Brake disc contaminated (1.1.14 (b)) | 2 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 2 |
| Offside Front Position lamp switch does not illuminate all position lamps with a single operation (4.2.2 (a)) | 1 |
| Central Rear Lower Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Central Front Horn not working (7.7 (a)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Nearside Headlamp light source and lamp not compatible (4.1.4 (c)) | 1 |
| Offside Headlamp light source and lamp not compatible (4.1.4 (c)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Brake master cylinder defective but brake still operating (1.1.10 (b) (i)) | 1 |
| Central Position lamp showing red light to the front (4.2.3 (a) (ii)) | 1 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Rear Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected rear wheel spindle nut locking pin missing (5.2.1 (c) (ii)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls Front brake switch missing - Fit front brake switch (4.3.2 (a) (iii)) | 1 |
| Nearside Footrest insecure foot rest assembly loose. (6.2.12 (a)) | 1 |
| Offside Footrest insecure foot rest assembly loose. (6.2.12 (a)) | 1 |
| Nearside Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Nearside Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Headlamp not working on dipped beam bulb blown ....replaced (4.1.1 (a) (ii)) | 1 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Front Motorcycle structure joining/attachment plate or fastening insecure mirror was likely to fall off so has been tightened (6.1.1 (b) (i)) | 1 |
| Offside Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Headlamp aim unable to be tested (4.1.2 (b)) | 1 |
| Offside Front Brake disc insecure (1.1.14 (a) (ii)) | 1 |
| Nearside Front All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Front Upper Stop lamp not working front brake light not working (4.3.1 (a) (ii)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected throttle grip sticking (6.2.7 (a) (ii)) | 1 |
| Front Brake grabbing severely severley grabbing (1.2.1 (c)) | 1 |
| Offside Front Upper Handlebar grip insecure to handlebar throttle grip insecure, moves on throttle tube so heated grip cable obstructs correct movement (2.2.1 (d) (ii)) | 1 |
| Front All position lamps not working both sidelights not working (4.2.1 (a)) | 1 |
| Stop lamp switch with a delay in operation |4.3.2 |a| |ii|| | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Stop lamp emits other than a steady red light (4.3.3 (a) (ii)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls Front stop switch not working (4.3.2 (a) (iii)) | 1 |
| Offside Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition baffle missing (8.1.1 (a)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls stop lamp does not illuminate from the rear brake pedal (4.3.2 (a) (iii)) | 1 |
| Rear Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 1 |
| Headlamp incorrect colour (4.1.4 (a)) | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Nearside Rear Direction indicator light intensity significantly reduced (4.4.3 (a)) | 1 |
| Offside Rear Direction indicator light intensity significantly reduced (4.4.3 (a)) | 1 |
| Steering operation impeded by a fairing (2.1.4 (e)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls Stop switch connection (4.3.2 (a) (iii)) | 1 |
| Rear Suspension attachment bracket/mounting insecure Linkage bolt (5.3.3 (a) (i)) | 1 |
| Front All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Offside Handlebar grip insecure to handlebar Re-glued (2.2.1 (d) (ii)) | 1 |
| Stop lamp not working Not working from rear brake. (4.3.1 (a) (ii)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Rear Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Front Stop lamp not working front brake (4.3.1 (a) (ii)) | 1 |
| Nearside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Offside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Headlamp aim unable to be tested (4.1.2 (b)) | 1 |
| Headlamp aim projected beam image obviously incorrect Bulb incorrectly fitted (4.1.2 (c)) | 1 |
| Indicator switch inoperative (4.4.2 (a) (ii)) | 1 |
| Exhaust silencer insecure (8.1.1 (b) (i)) | 1 |
| Front Horn not working (7.7 (a)) | 1 |
| Front Stop lamp not working Front brake not illuminating stop lamp (4.3.1 (a) (ii)) | 1 |
| Rear Direction indicator light intensity significantly reduced |4.4.3 |a|| | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Offside Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Horn not working horn does not work when tested (7.7 (a) (ii)) | 1 |
| Nearside Front Handlebar excessively deformed (2.2.1 (c) (i)) | 1 |
| Front Brake lever not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Rear Exhaust silencer insecure (8.1.1 (b) (i)) | 1 |
| Rear Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Nearside Rear Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Front Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Nearside Front Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Front Upper Clutch lever shortened so it cannot be readily operated (6.2.7 (b)) | 1 |
| Offside Front Upper Stop lamp not working front brake switch seized, oil added to free of and operate rear stop lamp (4.3.1 (a) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Stop lamp not working stop light not working on front brake control (4.3.1 (a) (ii)) | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Front Stop lamp emits other than a steady red light (4.3.3 (a) (ii)) | 1 |
| Drive chain horseshoe locking device likely to become detached (6.1.7 (j) (ii)) | 1 |
| Stop lamp not working front brake (4.3.1 (a) (ii)) | 1 |
| Stop lamp not working rear brake (4.3.1 (a) (ii)) | 1 |
| Central Rear Suspension arm likely to fail seized mono shock links. (5.3.3 (b) (ii)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Offside Rear Brake lining(s) incorrectly mounted (1.1.13 (c)) | 1 |
| Nearside Front Footrest insecure (6.2.12 (a)) | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Stop lamp not working on rear pedal (4.3.1 (a) (ii)) | 1 |
| Stop lamp not working Front brake lever (4.3.1 (a) (ii)) | 1 |
| Stop lamp not working front brake control (4.3.1 (a) (ii)) | 1 |