| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 18 |
| Horn not working |1.6.2a| | 6 |
| Registration plate lamp issues | 5 |
| Rear parking brake recording little or no effort | 4 |
| Hazard warning switch missing |1.4.B.1d| | 4 |
| Registration plate issues | 4 |
| Parking brake: efficiency below requirements |3.7.C.1b| | 3 |
| Parking brake: efficiency below requirements |3.7.B.7| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Service brake: efficiency below requirements |3.7.B.7| | 3 |
| Nearside rear brake recording little or no effort |3.7.B.5a| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Nearside Rear Rear reflector missing |1.5.1a| | 2 |
| Offside Rear Rear reflector missing |1.5.1a| | 2 |
| Parking brake lever has no reserve travel |3.1.6b| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Direction indicators flashing more than 120 times a minute |1.4.A.2g| | 2 |
| Nearside Stop lamp not working |1.2.1b| | 2 |
| Offside Stop lamp not working |1.2.1b| | 2 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 2 |
| Front Headlamp aim beam image kick up to the offside |1.8| | 2 |
| Centre Headlamp not working on dipped beam |1.7.5a| | 2 |
| Centre Headlamp aim beam image kick up to the offside |1.8| | 2 |
| Hazard warning lamps not flashing in phase, with ignition on |1.4.B.1f| | 2 |
| Hazard warning lamps not flashing in phase, with ignition off |1.4.B.1f| | 2 |
| Service brake efficiency below requirements |1.2.2 |a| |i|| | 2 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 2 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 2 |
| Service brake efficiency below requirements (1.2.2 (a) (i)) | 2 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 2 |
| Offside Rear Hydraulic brake cylinder leaking hydraulic fluid (1.1.16 (b) (i)) | 1 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 1 |
| Front position lamp|s| not working |1.1.A.3b| | 1 |
| Mechanical brake component has restricted free movement | 1 |
| Nearside Rear All position lamps not working |1.1.A.3b| | 1 |
| Rear Stop lamp not working |1.2.1b| | 1 |
| Nearside Rear Wheel nut|s| loose |4.2.A.1e| | 1 |
| Offside Rear Wheel nut|s| missing |4.2.A.1e| | 1 |
| Brake cable has restricted free movement |3.5.1k| | 1 |
| Rear Wheel spoke missing |4.2.1b| | 1 |
| Nearside Rear Suspension arm which is adjustable, locking device insecure |2.4.G.1| | 1 |
| Offside Front Upper Suspension arm attachment bracket inappropriately repaired |2.4.A.2| | 1 |
| Nearside Front Upper Suspension arm attachment bracket inappropriately repaired |2.4.A.2| | 1 |
| Nearside Front Upper Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 1 |
| Brake hose excessively deteriorated | 1 |
| Offside Front Shock absorbers has a serious fluid leak | 1 |
| Front Fork yoke insecure |2.2.2 |f| |i|| | 1 |
| Nearside Rear Lower Suspension arm pin or bush excessively worn front bush |5.3.4 |a| |i|| | 1 |
| Offside Rear Inner Suspension arm attachment bracket/mounting insecure and impairing directional stability bolt loose |5.3.3 |a| |ii|| | 1 |
| Rear reflector missing both sides (4.8.2 (a) (ii)) | 1 |
| Position lamp not working all (4.2.1 (a) (ii)) | 1 |
| Rear Suspension arm insecurely attached bothsides (5.3.3 (a) (i)) | 1 |
| Brake master cylinder insecure bolt missing (1.1.10 (c)) | 1 |
| Front Headlamp adversely affected by the operation of another lamp kills engine |1.7.5c| | 1 |
| Headlamp not working on main beam |1.7.5a| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Stop lamp not working |1.2.1b| | 1 |
| Rear Brake pedal anti-slip provision worn smooth |3.3.A.1b| | 1 |
| Rear Brake pedal has insufficient reserve movement |3.3.A.5| | 1 |
| Nearside Front shock absorber insecure |9.2.7a| | 1 |
| Front wheel bearings are excessively rough |9.2.8c| | 1 |
| Nearside Rear Suspension arm has excessive play in a pin/bush |2.4.G.2| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Offside Rear reflector missing |1.5.1a| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Brake pedal spongy |3.3.B.1b| | 1 |
| Brake master cylinder insecurely mounted |3.6.G.1a| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Nearside Rear Trikes, quads or pre-68 vehicles, service brake efficiency below requirements |3.7.C.1a| | 1 |
| Nearside Rear Parking brake efficiency below requirements |3.7.C.1b| | 1 |
| Offside Rear Footrest insecure |9.6.1| | 1 |
| Hazard warning lamps inoperative |1.4.B.1b| | 1 |
| Nearside Front Brake hose excessively damaged |3.6.B.4d| | 1 |
| Hazard warning switch inoperative (4.4.2 (a) (ii)) | 1 |
| Offside Rear Direction indicator not working |1.4.A.2c| | 1 |
| Parking brake efficiency below requirements |3.7.B.7| | 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 brake recording little or no effort |3.7.B.5a| | 1 |
| Offside Rear Rear wheel bearing rough when rotated |2.6.1| | 1 |
| Nearside Rear Hydraulic brake cylinder leaking hydraulic fluid |1.1.16 |b| |i|| | 1 |
| Nearside Rear Brake performance not tested wheel cylinder leaking |1.2.1 |g|| | 1 |
| Exhaust has a major leak of exhaust gases Front pipe (6.1.2 (a)) | 1 |
| Exhaust system insecure Front pipe (6.1.2 (a)) | 1 |
| Parking brake efficiency less than 50% of the required value |1.4.2 |a| |ii|| | 1 |
| Offside Rear Road wheel fixings not compatible nut incorrectly fitted |5.2.2 |d|| | 1 |
| Brake cable damaged parking brake cable broken |1.1.15 |a|| | 1 |
| Headlamp aim projected beam image is obviously incorrect Kick up to the o/s |4.1.2 |c|| | 1 |
| Service brake: efficiency below requirements |3.7.C.1a| | 1 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 1 |
| Hazard warning lamps not fitted |1.4.B.1a| | 1 |
| Brake pipe fouled by moving parts |3.6.B.2a| | 1 |
| Body insecure and dangerous to other road users |6.1.B.1b| | 1 |
| Offside Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Service brake efficiency less than 50% of the required value (1.2.2 (a) (ii)) | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Front Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Rear Rear position lamp|s| adversely affected by the operation of another lamp |1.1.A.3f| | 1 |
| Hazard warning tell tale not working correctly |1.4.B.1e| | 1 |
| Nearside Rear Service brake excessively binding |1.2.1 |f|| | 1 |
| Nearside Rear Service brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Offside Rear Service brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Brake cable insecure |3.5.1d| | 1 |
| Nearside Rear Service brake efficiency below requirements (1.2.2 (a) (i)) | 1 |
| Offside Rear Service brake efficiency below requirements (1.2.2 (a) (i)) | 1 |
| Nearside Rear Brake clevis joint excessively worn (1.1.15 (b)) | 1 |
| Offside Rear Brake clevis joint excessively worn (1.1.15 (b)) | 1 |
| Offside Rear Position lamp not working (4.2.1 (a) (ii)) | 1 |
| Nearside Rear Position lamp light intensity significantly reduced |4.2.3 |a| |ii|| | 1 |
| Brake slack adjuster incorrectly installed foot brake |1.1.18 |c|| | 1 |
| Hazard warning switch inoperative |4.4.2 |a| |ii|| | 1 |
| Rear position lamp|s| not working |1.1.A.3b| | 1 |
| Nearside Rear Parking brake lever insecure |3.1.3b| | 1 |
| Offside Rear Brake pipe inadequately clipped |3.6.B.1| | 1 |
| Nearside Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Offside Rear Shock absorbers has a serious fluid leak | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Front Front position lamp|s| incorrect colour |1.1.A.3e| | 1 |
| Brakes imbalanced across an axle | 1 |
| Offside Rear Rear fog lamp missing |1.3.2a| | 1 |
| Front Hazard warning lamps not flashing in phase, with ignition on |1.4.B.1f| | 1 |
| Rear Hazard warning lamps not flashing in phase, with ignition on |1.4.B.1f| | 1 |
| Rear reflector missing |1.5.1a| | 1 |
| Rear fog lamp not working |1.3.2b| | 1 |
| Nearside Front Footrest insecure |9.6.1| | 1 |
| Offside Front Direction indicators not working |1.4.A.2c| | 1 |
| Offside Front Direction indicator adversely affected by the operation of another lamp |1.4.A.2h| | 1 |
| Direction indicators not working |1.4.A.2c| | 1 |
| Central Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Offside Rear fog lamp missing |1.3.2a| | 1 |
| Rear fog lamp switch missing |1.3.1a| | 1 |
| Offside Position lamp adversely affected by the operation of another lamp (4.2.3 (c)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Rear Suspension arm fractured (5.3.3 (b) (ii)) | 1 |
| Offside Brake cable has restricted free movement (1.1.15 (e)) | 1 |
| Nearside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 1 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 1 |
| Nearside Rear Exhaust system not adequately supported and hitting rear suspension arm |7.1.1| | 1 |
| Offside Rear Exhaust system not adequately supported and hitting rear suspension arm |7.1.1| | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Offside Stop lamp(s) not working incorrectly wired (4.3.1 (a) (ii)) | 1 |