| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 21 |
| Rear reflector on motorcycle missing |1.4.1| | 10 |
| Registration plate issues | 7 |
| Rear reflector missing (4.8.2 (a) (ii)) | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Horn not working |1.7.3a| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Registration plate lamp issues | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Rear wheel bearings have excessive free play (2.4.A.2c) | 1 |
| Front Brake hose leaking fluid (3.2.B4) | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Exhaust markings indicating not for road use or similar wording Both silencers (6.1.2 (c)) | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear All position lamps not working (4.2.1 (a)) | 1 |
| Upper Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 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 |
| Rear Wheel fixing loose (single fixing) (5.2.1 (a) (ii)) | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Exhaust is leaking and excessively noisey Header pipe gasket blowing |7.1.1b| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Steering linkage locking device ineffective (2.1.3 (d)) | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Drive chain excessively tight (6.2.1d) | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Direction indicators flashing more than 120 times per minute all 4 |1.5.1c| | 1 |
| Stop lamp affected by the operation of another lamp direction indicators |1.3.2| | 1 |
| Centre Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Rear All direction indicators incorrect colour |4.4.3 |a|| | 1 |
| Offside Rear All direction indicators incorrect colour |4.4.3 |a|| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |