| Most common failures | No# failures |
|---|
| Registration plate issues | 65 |
| Rear reflector on motorcycle missing |1.4.1| | 53 |
| Horn not working |1.7.3a| | 23 |
| Headlamp aim out of alignment | 22 |
| Horn missing |1.7.1| | 19 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 17 |
| Rear Wheel spoke excessively loose |4.2.1b| | 13 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 11 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 10 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 10 |
| Front wheel bearings have excessive free play |2.3.5b| | 8 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 7 |
| 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| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Drive chain excessively loose |6.2.1d| | 6 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Front wheel bearings are excessively rough |2.3.5b| | 6 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Horn not working (7.7 (a) (ii)) | 6 |
| Rear reflector missing (4.8.2 (a) (ii)) | 6 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 5 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 4 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Registration plate lamp issues | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| All position lamps not working |4.2.1 |a|| | 3 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 3 |
| Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Stop lamp missing |1.3.3a| | 3 |
| Headlamp aim not tested |1.6| | 3 |
| Front Horn not working |1.7.3a| | 3 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| An item not tested |Manual| | 3 |
| Front Stop lamp missing |1.3.3a| | 3 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Horn sound not in accordance with requirements |7.7 |c|| | 2 |
| Central Front Headlamp aim not tested No Dip Or Main Beam (4.1.2 (b)) | 1 |
| Central Front Stop lamp not working Front Brake Light N/W (4.3.1 (a) (ii)) | 1 |
| Centre Rear Rear suspension bearing has excessive free play swinging arm bearing |2.4.A2a|i|| | 1 |
| Central Fuel hose leaking (6.1.3 (b) (i)) | 1 |
| Central Rear Motorcycle structure joining/attachment plate or fastening insecure swing arm has movement (6.1.1 (b) (i)) | 1 |
| Offside Front Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Front Brake performance not tested (1.2.1 (g)) | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Brake lever not releasing correctly and functionality of brakes affected |1.1.2 |b| |ii|| | 1 |
| Rear Stop lamp switch with a delay in operation |4.3.2 |a| |ii|| | 1 |
| Front Upper Horn not working |1.7.3a| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Horn sound not in accordance with requirements bulb type fitted |7.7 |c|| | 1 |
| Suspension component damaged and seriously weakened not returning no rebound |5.3.3 |b| |i|| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Brake hose excessively deteriorated | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Brake hose damaged | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Centre Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear suspension bearing has excessive free play swing arm |2.4.A2a|i|| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Fork yoke fractured |2.1.1b| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Headlamp aim not tested Headlamp not working |4.1.2 |b|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Stop lamp does not illuminate immediately a brake applies both controls due to unable to start engine |1.3.1a| | 1 |
| Headlamp at least one does not illuminate on dipped beam unable to start engine |1.2.2a|i|| | 1 |
| All position lamps do not illuminate immediately when switched on unable to check due to engine not starting |1.1.3a| | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Dipswitch does not operate immediately when selected on dipped beam main beam staying on (4.1.3 (b)) | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Nearside Rear Drive chain fouling another component |6.2.1d| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering catching radiator cowl on left lock |2.1.2a| | 1 |
| Rear Lower Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Centre Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Stop lamp does not illuminate immediately a brake applies Front Brake Stop Lamp Intermittent |1.3.1a| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Stop lamp not working front brake light |4.3.1 |a| |ii|| | 1 |
| Rear reflector missing rear |4.8.2 |a| |ii|| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Horn replaced by a siren |1.7.3b| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 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 |
| Front Brake lever is so short that the brake cannot be readily applied brake lever (1.1.2 (d)) | 1 |
| Brake fluid reservoir severely damaged cap insecure and bolt snapped off |3.2.B1b| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Rear Exhaust has part of the system missing |7.1.1a| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Central Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Rear suspension bush has excessive free play Rear shock linkage |2.4.A2a|i|| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Headlamp missing |1.2.3a| | 1 |
| Rear position lamp missing |1.1.1a| | 1 |