| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 23 |
| Rear reflector on motorcycle missing |1.4.1| | 12 |
| Registration plate issues | 12 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Drive chain excessively loose |6.2.1d| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Registration plate lamp issues | 4 |
| Horn not working |1.7.3a| | 4 |
| Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 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 |
| Nearside Front Direction indicators not working |1.5.1c| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Offside Front Footrest insecure |6.2.1a| | 3 |
| 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|| | 3 |
| Rear reflector missing |4.8.2 |a| |ii|| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 2 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Riders seat insecure (6.2.5 (a) (ii)) | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front position lamp incorrect colour |1.1.2a| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Offside Footrest insecure riders |6.2.12 |a|| | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Front Lower Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Stop lamp does not illuminate immediately a brake applies Foot pedal |1.3.1a| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Central Exhaust system insecure clamp missing (6.1.2 (a)) | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| Rear Brake grabbing severely run out (1.2.1 (c)) | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear Wheel fixing missing (single fixing) NUT (5.2.1 (a) (ii)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Nearside Front Direction indicator with a multiple light source more than 1/2 not functioning (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator with a multiple light source more than 1/2 not functioning (4.4.1 (a) (ii)) | 1 |
| Offside Front Direction indicator with a multiple light source more than 1/2 not functioning (4.4.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator with a multiple light source more than 1/2 not functioning (4.4.1 (a) (ii)) | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Centre Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Offside Rear Brake lever has restricted free movement (1.1.15 (e)) | 1 |
| Central Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Central Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Brake hose stretched by steering movement |3.2.B3b| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Offside Front Suspension arm ball joint likely to become detached (5.3.4 (a) (ii)) | 1 |
| Nearside Front Lower Coil spring fractured or broken (5.3.1 (b) (i)) | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Nearside Rear Direction indicator obviously incorrectly positioned l/h rear insecure hanging |4.4.3 |a|| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Brake fluid reservoir cap missing |3.2.B1c| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Position lamp showing red light to the front (4.2.3 (a) (ii)) | 1 |
| Offside Front All direction indicators obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Front Horn not working |7.7 |a| |ii|| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Offside Front Footrest insecure (6.2.12 (a)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Direction indicators not working less than 50 % of the light is illuminating . |1.5.1c| | 1 |
| Nearside Front Footrest insecure (6.2.12 (a)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 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 |
| Wheel fixing missing |single fixing| pinch bolt missing. |5.2.1 |a| |ii|| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Front 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 |
| Nearside Headlamp incorrect colour |1.2.1| | 1 |
| Offside Headlamp incorrect colour |1.2.1| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Brake pedal mounting insecure |3.1.2a| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Front Direction indicator incorrect colour |4.4.3 |a|| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Nearside Handlebar fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies Pedal switch inoperative. |1.3.1a| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Offside Front Brake component insecure Flexible hose loose (1.1.21 (c)) | 1 |
| Nearside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |