| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 11 |
| Rear reflector on motorcycle missing |1.4.1| | 10 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Registration plate issues | 5 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Drive chain excessively loose |6.2.1d| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| 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| | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear Exhaust system insecure (6.1.2 (a)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Drive chain sprocket so loose it is likely to fail mounting bolts loose (6.1.7 (c) (ii)) | 1 |
| Front Brake disc fractured |1.1.14 |a| |ii|| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front Motorcycle structure adversely modified |6.1.1b| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Front Front wheel spindle loose |2.3.3a| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Shock absorber has negligible damping effect fork seals leaking no damping front forks. (5.3.2 (b)) | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Offside Rear Brake component insecure security lockpin missing on anchor bolt |1.1.21 |c|| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Brake lever excessively damaged |3.2.A1c| | 1 |
| Horn not working |1.7.3a| | 1 |
| Nearside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Footrest insecure (6.2.12 (a)) | 1 |
| Offside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Exhaust mounting missing |7.1.1c| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Direction indicator obviously incorrectly positioned both fronts too close together 240 mm spacing required (4.4.3 (a)) | 1 |
| Nearside Rear Direction indicator obviously incorrectly positioned not visible hidden behind number plate (4.4.3 (a)) | 1 |
| Brake rod insecure reaction arm no split pin (1.1.15 (c)) | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Registration plate lamp issues | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Direction indicators flashing more than 120 times per minute Both |1.5.1c| | 1 |
| Rear Direction indicator missing Both |1.5.1a| | 1 |
| Rear Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |