| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 14 |
| Rear reflector on motorcycle missing |1.4.1| | 13 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Drive chain excessively loose |6.2.1d| | 8 |
| Front wheel bearings have excessive free play |2.3.5b| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 4 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Offside Front Direction indicator insecure |1.5.3b| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Rear reflector on sidecar missing |1.4.1| | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| Registration plate lamp issues | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Nearside Rear Direction indicator lens defective such that the emitted light is adversely affected |4.4.1 |b| |ii|| | 1 |
| Nearside Rear Footrest missing |6.2.12 |a|| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Centre Rear Upper Fuel tank leaking |7.2.1a| | 1 |
| Nearside Front Upper Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 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 Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Offside Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Brake pedal is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Front Brake lever mounting insecure |3.1.2a| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Brake locking device insecure rear brake adjuster locknut loose
|3.2.A1e| | 1 |
| Exhaust system insecure |6.1.2 |a|| | 1 |
| Rear Brake master cylinder insecure |1.1.10 |c|| | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Brake lagging in operation |1.2.1 |d|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Front Brake master cylinder defective but brake still operating reservoir rubber on mirror bolt (1.1.10 (b) (i)) | 1 |
| Rear Brake master cylinder defective but brake still operating brake rod rubbing on exhaust (1.1.10 (b) (i)) | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Front Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Rear Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Footrest missing rear |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 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 |
| Registration plate issues | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Nearside Front Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Brake hose damaged | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Outer Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Outer Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Inner Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |