| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 11 |
| Registration plate issues | 10 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 7 |
| Nearside Rear Direction indicator not working |1.5.1c| | 6 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Nearside Front Direction indicator not working |1.5.1c| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Rear Position lamp not working (4.2.1 (a)) | 4 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Handlebar mounting clamp loose |2.1.1a| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Offside Steering lock stop ineffective |2.1.3| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Horn not working |1.7.3a| | 2 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Riders seat insecure (6.2.5 (a) (ii)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Central Front Upper Steering linkage locking device ineffective |2.1.3 |d|| | 1 |
| Rear Rear reflector on motorcycle deteriorated and function impaired |1.4.2a| | 1 |
| Rear Riders seat insecure |6.2.1a| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Brake component is excessively corroded |3.1.5| | 1 |
| Offside Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Front Brake component damaged and seriously reduced in strength |3.2.A1| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Nearside Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Centre Front Upper Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front wheel has a missing wheel nut|s| |4.2.3a| | 1 |
| Front Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front Front suspension has excessive corrosion which reduces the strength of a load bearing member or its supporting structure. |2.3.8| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Lower Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Centre Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Front suspension spring worn and seriously weakened |2.3.2b| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Front Headlamp aim not tested (4.1.2 (b)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Vehicle identification number has more than one different number displayed (0.2 (c)) | 1 |
| Engine mounting/bracket excessively loose (6.1.8 (a) (ii)) | 1 |
| Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| All direction indicators incorrect colour (4.4.3 (a)) | 1 |
| Stop lamp not working Does not operate from either brake control (4.3.1 (a) (ii)) | 1 |
| Headlamp light intensity severely reduced headlamp dims severly when horn operated (4.1.4 (a)) | 1 |
| Position lamp adversely affected by the operation of another lamp rear position lamp dims severly when horn operated (4.2.3 (b)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Front All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 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 |
| Rear Position lamp not working intermittent (4.2.1 (a)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Shock absorber insecurely attached (5.3.2 (a) (i)) | 1 |
| Rear Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 1 |