| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 14 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 5 |
| Parking brake lever has no reserve travel |3.1.6b| | 5 |
| Registration plate issues | 5 |
| Rear brake binding | 5 |
| Hazard warning switch missing |1.4.B.1d| | 3 |
| Brakes imbalanced across an axle | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Front brake disc contaminated by oil |3.5.1h| | 2 |
| Nearside Rear rear brake recording little or no effort |3.7.B.5a| | 2 |
| Rear Brake pipe inadequately clipped |3.6.B.1| | 2 |
| Nearside Stop lamp not working |1.2.1b| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Nearside rear brake recording little or no effort |3.7.B.5a| | 2 |
| Nearside Rear reflector missing |1.5.1a| | 2 |
| 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| | 2 |
| Rear Brake hydraulic reservoir fluid level below minimum level |3.6.G.1b| | 2 |
| Offside Front shock absorber leaking oil |9.2.7b| | 1 |
| Rear Brake pipe inadequately supported |3.6.B.1| | 1 |
| Rear Brake pedal operating lever not secure to the pedal |3.3.A.1c| | 1 |
| Brake performance not tested |3.7.A.1| | 1 |
| Service brake: efficiency below requirements |3.7.C.1a| | 1 |
| Parking brake: efficiency below requirements |3.7.C.1b| | 1 |
| Rear Brake linkage locking device insecure |3.5.1l| | 1 |
| Rear Trikes, quads or pre-68 vehicles, service brake efficiency below requirements |3.7.B.7| | 1 |
| Offside Rear rear brake recording little or no effort |3.7.B.5a| | 1 |
| Offside Stop lamp not working |1.2.1b| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Nearside Rear Upper Shock absorbers insecurely attached bolt loose (5.3.2 (a) (i)) | 1 |
| Stop lamp(s) all not working (4.3.1 (a) (iii)) | 1 |
| Nearside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 1 |
| Hazard warning switch inoperative Missing (4.4.2 (a) (ii)) | 1 |
| Rear Stop lamp(s) remains on when the brakes are released (4.3.2 (a) (iii)) | 1 |
| Nearside Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Position lamp not working Both forward facing position lamps not working - vehicle over 1300mm width (4.2.1 (a) (ii)) | 1 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 1 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 1 |
| Nearside Rear Direction indicator not working |1.4.A.2c| | 1 |
| Central Exhaust has a major leak of exhaust gases |7.1.2| | 1 |
| Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Front Stop lamp|s| not working |4.3.1 |a| |ii|| | 1 |
| Nearside Rear All position lamps not working |1.1.A.3b| | 1 |
| Rear Rear reflector missing both |4.8.2 |a| |ii|| | 1 |
| Hazard warning switch inoperative not fitted |4.4.2 |a| |ii|| | 1 |
| Upper Fork yoke clamp bolt loose |9.2.1c| | 1 |
| Hazard warning lamps not fitted |1.4.B.1a| | 1 |
| Offside Rear reflector missing |1.5.1a| | 1 |
| Front brake disc contaminated by brake fluid |3.5.1h| | 1 |
| Front Brake hydraulic reservoir fluid level below minimum level |3.6.G.1b| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Rear Exhaust system not adequately supported |7.1.1| | 1 |
| Rear Brake pedal has insufficient reserve movement |3.3.A.5| | 1 |
| Horn control insecure |1.6.1| | 1 |
| Nearside Rear Direction indicators not working |1.4.A.2c| | 1 |
| Rear Brake hydraulic reservoir insecurely mounted |3.6.A.2a| | 1 |
| rear brake recording little or no effort |3.7.B.5a| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Nearside Rear Rear wheel bearing has excessive play |2.6.2| | 1 |
| Front wheel bearings are excessively rough |9.2.8c| | 1 |
| Centre Front Headlamp does not operate immediately when selected on dipped beam |1.7.4a| | 1 |
| Registration plate lamp issues | 1 |
| Stop lamp(s) remains on when the brakes are released (4.3.2 (a) (iii)) | 1 |
| Nearside Rear Brake pipe leaking on a hydraulic braking system (1.1.11 (b) (ii)) | 1 |
| All position lamps adversely affected by the operation of another lamp Stop light (4.2.3 (c)) | 1 |
| Nearside Front Front position lamp|s| missing |1.1.A.3a| | 1 |
| Offside Front Front position lamp|s| missing |1.1.A.3a| | 1 |
| Nearside Rear Rear position lamp|s| missing |1.1.A.3a| | 1 |
| Offside Rear Rear position lamp|s| missing |1.1.A.3a| | 1 |
| Nearside Headlamp not working on main beam |1.7.5a| | 1 |
| Offside Headlamp not working on main beam |1.7.5a| | 1 |
| Nearside Front position lamp|s| adversely affected by the operation of another lamp |1.1.A.3f| | 1 |
| Offside Front position lamp|s| adversely affected by the operation of another lamp |1.1.A.3f| | 1 |
| Nearside Rear position lamp|s| adversely affected by the operation of another lamp |1.1.A.3f| | 1 |
| Offside Rear position lamp|s| adversely affected by the operation of another lamp |1.1.A.3f| | 1 |
| Brake cable has wires broken and is significantly weakened |3.5.1b| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar vehicle fitted with a standard silencer in average condition |7.1.4| | 1 |
| Offside Rear Sub-frame cracked |2.4.G.1| | 1 |
| Indicator tell tale missing |1.4.A.2a| | 1 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 1 |
| Parking brake lever defective so that it cannot be satisfactorily operated |3.1.3c| | 1 |
| Stop lamp excessively damaged so that it is not visible from a reasonable distance |1.2.1d| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Steering system excessively rough |2.2.D.1| | 1 |
| Mechanical brake component securing device missing |3.5.1i| | 1 |
| Nearside Front shock absorber leaking oil |9.2.7b| | 1 |
| Nearside Front brake disc contaminated by oil |3.5.1h| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Brake pedal fouling on other parts of the vehicle |3.3.A.4| | 1 |
| Offside Front Shock absorbers has a serious fluid leak | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Horn not working |1.6.2a| | 1 |
| Rear parking brake recording little or no effort | 1 |
| Parking brake: efficiency below requirements |3.7.B.7| | 1 |
| Offside Rear Stop lamp not working |1.2.1b| | 1 |
| Offside Rear Rear position lamp|s| not working |1.1.A.3b| | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |