| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 11 |
| Drive chain excessively loose |6.2.1d| | 10 |
| Headlamp aim out of alignment | 7 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Registration plate issues | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Riders seat insecure (6.2.5 (a) (ii)) | 2 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Rear reflector on motorcycle obscured |1.4.2b| | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Brake performance not tested |1.2.1 |g|| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Front shock absorber seal failed and leaking oil L/H |2.3.3| | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls lever (4.3.2 (a) (iii)) | 1 |
| Exhaust excessively deteriorated downpipe has hole in |7.1.1a| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear Brake back plate|s| insecure arm |3.2.A1j| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Stop lamp not working switch faulty |4.3.1 |a| |ii|| | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Headlamp reflector missing |4.1.1 |b| |ii|| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Nearside Front Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Brake disc|s| excessively worn Rear |3.2.A1l| | 1 |
| Front shock absorber seal failed and leaking oil Both |2.3.3| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Direction indicators flashing more than 120 times per minute all |1.5.1c| | 1 |
| Stop lamp insecure |1.3.3b| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Front Steering headbearing in such a condition that steering control is adversely affected |2.2.2 |f| |ii|| | 1 |
| Rear Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Drive chain sprocket excessively loose |6.1.7 |c| |i|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 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 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Dipswitch does not operate immediately when selected on main beam (4.1.3 (b)) | 1 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Rear reflector defective or damaged by more than 50% of the reflecting surface (4.8.1 (a) (ii)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Front Upper Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Nearside Rear Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition (8.1.1 (a)) | 1 |
| Fuel cap leaking (6.1.3 (b) (i)) | 1 |
| Fuel cap ineffective (6.1.3 (b) (i)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls REAR control (4.3.2 (a) (iii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride horseshoe clip on backwards |6.2.1h| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Clutch lever positioned so it cannot be readily operated. stiff |6.2.1g| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |