| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 28 |
| Registration plate issues | 11 |
| Rear reflector on motorcycle missing |1.4.1| | 9 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Horn not working |1.7.3a| | 4 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Registration plate lamp issues | 3 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Fuel cap/sealing device does not fasten securely maintaining the sealing arrangement |7.2.4b| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Front Horn not working |1.7.3a| | 1 |
| Nearside Rear reflector missing |1.5.1a| | 1 |
| Offside Rear reflector missing |1.5.1a| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Parking brake: efficiency below requirements |3.7.C.1b| | 1 |
| Headlamp excessively damaged so that the light output is severely reduced |1.7.5a| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Headlamp aim not tested not emitting a steady enough light |1.6| | 1 |
| Rear Rear suspension bush has excessive free play upper and lower shock mount bushes |2.4.A2a|i|| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Rear Direction indicator not working |1.4.A.2c| | 1 |
| Front All position lamps not working |1.1.A.3b| | 1 |
| Rear All position lamps not working |1.1.A.3b| | 1 |
| Brake performance not tested |3.7.A.1| | 1 |
| Steering control restriction of the free movement of the steering |9.2.2a| | 1 |
| Brake lever cannot be released smoothly |9.3.1h| | 1 |
| Stop lamp does not illuminate immediately a brake applies Front brake light switch inoperative |1.3.1a| | 1 |
| Rear Wheel fixing loose |single fixing| |5.2.1 |a| |ii|| | 1 |
| Nearside Drive chain excessively tight |6.2.1d| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Indicator tell tale not operating correctly |1.5.2| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| 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| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected |1.1.2 |b| |ii|| | 1 |
| Stop lamp does not illuminate immediately a brake applies front brake light switch not making contact with brake lever |1.3.1a| | 1 |
| Steering movement excessively stiff with the wheel raised r/h stop lock |2.2.1b| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Decelerometer brake test indicates a binding brake |3.3.E1d| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear Mechanical brake component has restricted free movement | 1 |
| Brakes imbalanced across an axle | 1 |
| Hazard warning switch missing |1.4.B.1d| | 1 |
| Offside Rear Brake pipe leaking |3.6.A.1| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Position lamp not working only work when main beam on |4.2.1 |a| |ii|| | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Nearside Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Offside Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Parking brake lever missing |1.1.6 |d|| | 1 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 1 |
| Nearside Front Hazard warning lamps inoperative |1.4.B.1b| | 1 |
| Horn not working |1.6.2a| | 1 |
| Nearside Front Upper Suspension arm has excessive play in a ball joint |2.4.G.2| | 1 |
| Offside Front Upper Suspension arm has excessive play in a ball joint |2.4.G.2| | 1 |
| Nearside Front Inner Track rod end ball joint has excessive play |2.2.B.1f| | 1 |
| Offside Front Inner Track rod end ball joint has excessive play |2.2.B.1f| | 1 |
| Nearside Front Inner Steering locking device missing ball joint split pin missing |2.2.C.1g| | 1 |
| Offside Front Inner Steering locking device missing ball joint split pin missing |2.2.C.1g| | 1 |
| Nearside Front Direction indicator not working |1.4.A.2c| | 1 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 1 |
| Direction indicators not working |1.4.A.2c| | 1 |
| Offside Front Lower Ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.2.C.1c| | 1 |
| Nearside Front Track rod end ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.2.C.1c| | 1 |
| Offside Lower Steering locking device missing |2.2.C.1g| | 1 |
| Offside Front Upper Steering locking device missing |2.2.C.1g| | 1 |
| Offside Front Steering locking device missing |2.2.C.1g| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Front Lower Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Stop lamp|s| all not working |4.3.1 |a| |iii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Rear Anti-roll bar pin or bush excessively worn both |5.3.4 |a| |i|| | 1 |
| Rear Service brake efficiency less than 50% of the required value |1.2.2 |a| |ii|| | 1 |
| Parking brake efficiency less than 50% of the required value |1.4.2 |a| |ii|| | 1 |
| Nearside Rear Anti-roll bar pin or bush excessively worn |5.3.4 |a| |i|| | 1 |
| Offside Rear Anti-roll bar pin or bush excessively worn |5.3.4 |a| |i|| | 1 |
| Service brake efficiency below requirements |1.2.2 |a| |i|| | 1 |
| Offside Stop lamp not working |1.2.1b| | 1 |
| Horn sounds harsh or grating |1.6.2e| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |2.7.3| | 1 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear reflector reflecting white to the rear both rear. (4.8.2 (a) (ii)) | 1 |
| Hazard warning lamps inoperative (4.4.1 (e)) | 1 |
| Steering locking device missing both front track rod end split pins missing. (2.1.3 (d)) | 1 |
| Road wheel fixing loose n/s and o/s rear wheel bolts not fitted properly. (5.2.1 (a) (i)) | 1 |
| Obligatory mirror missing n/s and o/s rear wing mirrors missing. (3.3 (a)) | 1 |
| Parking brake inoperative on one side (1.4.1 (a)) | 1 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Offside Front Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Central Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear 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 |
| Central Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 1 |
| Front Headlamp light intensity severely reduced (4.1.4 (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 |
| Front Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Rear Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Wheel spindle loose (5.2.1 (c) (i)) | 1 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Stop lamp not working front brake (4.3.1 (a) (ii)) | 1 |
| Nearside Footrest insecure (6.2.12 (a)) | 1 |
| Front Shock absorber has a serious fluid leak both forks (5.3.2 (b)) | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Steering column top bearing excessively worn (2.1.2c) | 1 |
| Nearside Front Ball joint has excessive play (2.2.B.1f) | 1 |
| Offside Headlamp not working on dipped beam (1.7.5a) | 1 |
| Nearside Front Front wheel bearing has excessive play (2.5.A.3c) | 1 |
| Nearside Rear Suspension arm has excessive play in a pin/bush (2.4.G.2) | 1 |
| Rear Suspension arm has excessive play in a pin/bush (2.4.G.2) | 1 |
| Exhaust emissions carbon monoxide content at idle excessive (7.3.D.4) | 1 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive (7.3.D.3) | 1 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits (7.3.D.3) | 1 |
| Service brake: efficiency below requirements (3.7.C.1a) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Offside Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Stop lamp not working with front control (4.3.1 (a) (ii)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Headlamp incorrect colour (4.1.4 (a)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Position lamp likely to become detached (4.2.1 (c) (ii)) | 1 |
| Rear Lower Suspension arm ball joint excessively worn shocker bracket (5.3.4 (a) (i)) | 1 |
| Front Headlamp insecure (4.1.1 (c)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |