| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 11 |
| Headlamp aim out of alignment | 6 |
| Registration plate issues | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Brake disc|s| friction surface contaminated by oil or grease rust |3.2.A1k| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Offside Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 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 |
| Central Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Central Rear Position lamp not working |4.2.1 |a|| | 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 |
| Rear Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Front Fuel cap ineffective |6.1.3 |b| |i|| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Centre Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear Direction indicator obscured |1.5.1a| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Front Steering lock stop ineffective |2.1.3| | 1 |
| Rear Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Offside Rear Lower Brake component defective due to a deliberate modification which significantly reduces the original strength |3.1.5| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Brake performance not tested |3.3| | 1 |
| Rear Brake performance not tested |3.3| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Stop lamp not working front brake switch |4.3.1 |a| |ii|| | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected revs high on n/s & o/s steering lock (6.2.7 (a) (ii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak fork (5.3.2 (b)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |