| Most common failures | No# failures |
|---|
| Registration plate issues | 57 |
| Rear reflector missing (4.8.2 (a) (ii)) | 42 |
| Horn not working (7.7 (a)) | 15 |
| Rear reflector missing |4.8.2 |a| |ii|| | 13 |
| Horn not working (7.7 (a) (ii)) | 12 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 11 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 10 |
| Stop lamp remains on when the brakes are released | 10 |
| Headlamp aim out of alignment | 9 |
| Horn not working |7.7 |a| |ii|| | 9 |
| Rear Position lamp not working (4.2.1 (a)) | 7 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 5 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 5 |
| Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Rear Wheel spoke excessively loose (5.2.2 (d)) | 5 |
| Registration plate lamp issues | 5 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 4 |
| Horn not working |1.7.3a| | 3 |
| Front Horn not working |7.7 |a| |ii|| | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 3 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 3 |
| Rear Position lamp not working |4.2.1 |a|| | 3 |
| Front Horn not working (7.7 (a)) | 3 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 3 |
| Front Wheel spoke excessively loose (5.2.2 (d)) | 3 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 3 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Rear Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 2 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| All position lamps not working (4.2.1 (a)) | 2 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 2 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Horn missing |1.7.1| | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Position lamp not working (4.2.1 (a)) | 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 Wheel more than one fixing missing (5.2.1 (a) (ii)) | 1 |
| Exhaust markings indicating not for road use or similar wording (6.1.2 (c)) | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Stop lamp not working off the front control (4.3.1 (a) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak stanchion (5.3.2 (b)) | 1 |
| Front Wheel excessively distorted (5.2.2 (c) (i)) | 1 |
| Rear Wheel excessively damaged (5.2.2 (c) (i)) | 1 |
| Suspension arm pin or bush excessively worn swing arm (5.3.4 (a) (i)) | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Steering operation restricted in free movement from lock to lock fender fouling frame (2.1.4 (c)) | 1 |
| Drive chain horseshoe locking device likely to become detached missing (6.1.7 (j) (ii)) | 1 |
| Front Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 1 |
| Front Brake caliper inadequately mounted rubbing on disc (1.1.16 (c) (i)) | 1 |
| Rear Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 1 |
| Rear Lower Suspension component pin or bush excessively worn bearing (5.3.4 (a) (i)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Wheel spoke excessively loose wheel |5.2.2 |d|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear Wheel fixing loose (single fixing) (5.2.1 (a) (ii)) | 1 |
| Rear Wheel has bolts/rivets missing or loose to the extent that control of the motorcycle is likely to be adversely affected (5.2.2 (e) (ii)) | 1 |
| Wheel damaged or distorted to the extent that control of the motorcycle is likely to be adversely affected Front out of shape badly (5.2.2 (c) (ii)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies rear and |1.3.1a| | 1 |
| Stop lamp not working off front or rear |4.3.1 |a| |ii|| | 1 |
| Rear Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Suspension arm attachment bracket/mounting insecure (5.3.3 (a) (i)) | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| All position lamps not working front and rear (4.2.1 (a)) | 1 |
| Brake performance not tested due to rear wheel bearing (1.2.1 (g)) | 1 |
| Rear Stop lamp not working Operation 1 (front) (4.3.1 (a) (ii)) | 1 |
| Front Stop lamp switch with a delay in operation |4.3.2 |a| |ii|| | 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 Wheel spoke missing x2 (5.2.2 (d)) | 1 |
| Rear reflector on motorcycle missing (1.4.1) | 1 |
| Brake pedal insecure (1.1.2 (e) (i)) | 1 |
| Rear Wheel spindle loose (5.2.1 (c) (i)) | 1 |
| Rear Wheel spoke excessively loose X6 (5.2.2 (d)) | 1 |
| Throttle operating incorrectly throttle does not return when steering on lock (6.2.7 (a) (i)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Central Rear Rear reflector missing New reflector fitted. (4.8.2 (a) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak Fork leg oil seal leaking. (5.3.2 (b)) | 1 |
| Offside Front Shock absorber has a serious fluid leak Fork leg oil seal leaking. (5.3.2 (b)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Throttle operating incorrectly stiff (6.2.7 (a) (i)) | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Central Rear Lower Suspension component pin or bush excessively worn PDS BEARING |5.3.4 |a| |i|| | 1 |
| Central Suspension component pin or bush excessively worn MAIN swingarm bearings |5.3.4 |a| |i|| | 1 |
| Front brake disc in such a condition that it is seriously weakened | 1 |
| Suspension component pin or bush excessively worn Main swingarm
NUT missing |5.3.4 |a| |i|| | 1 |
| Rear Wheel spoke missing (5.2.2 (d)) | 1 |
| Rear Wheel spoke excessively loose some spokes are loose (5.2.2 (d)) | 1 |
| Steering operation linkage fouling when handlebars turned from lock to lock horn (2.1.4 (a)) | 1 |
| Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Offside Rear Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected fixing cracked. (5.2.1 (c) (ii)) | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Nearside Footrest insecure split pin missing |6.2.12 |a|| | 1 |
| Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Rear Wheel excessively distorted |5.2.2 |c| |i|| | 1 |
| Front Wheel spoke excessively loose |5.2.2 |d|| | 1 |
| Rear Wheel spoke excessively loose |5.2.2 |d|| | 1 |
| Dipswitch does not operate immediately when selected on dipped beam |4.1.3 |b|| | 1 |
| Nearside Front Upper Horn not working no horn fitted (7.7 (a) (ii)) | 1 |
| Central Rear Upper Rear reflector missing rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Steering operation restricted in free movement from lock to lock |2.1.4 |c|| | 1 |
| Offside Front Horn not working (7.7 (a) (ii)) | 1 |
| Central Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Central Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Central Front Shock absorber has a serious fluid leak front forks leaking oil (5.3.2 (b)) | 1 |
| Central Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Rear Brake drum fractured (1.1.14 (a) (ii)) | 1 |
| Front Lower Horn not working |7.7 |a| |ii|| | 1 |
| Central Front Horn not working (7.7 (a)) | 1 |
| Nearside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Central Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Central Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |