| Most common failures | No# failures |
|---|
| Registration plate lamp issues | 230 |
| Windscreen wiper does not clear the windscreen effectively | 134 |
| Headlamp aim out of alignment | 131 |
| Brake pipe excessively corroded | 66 |
| Brakes imbalanced across an axle | 62 |
| Registration plate issues | 53 |
| Parking brake: efficiency below requirements |3.7.B.7| | 40 |
| Service brake: efficiency below requirements |3.7.B.7| | 38 |
| Service brake efficiency below requirements (1.2.2 (a) (i)) | 34 |
| Offside Rear fog lamp not working |1.3.2b| | 24 |
| Windscreen has damage | 23 |
| Rear fog lamp not working (4.5.1 (a) (ii)) | 21 |
| Rear fog lamp not working |1.3.2b| | 19 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 19 |
| Nearside Stop lamp not working |1.2.1b| | 18 |
| Exhaust system not adequately supported |7.1.1| | 16 |
| Offside Stop lamp not working |1.2.1b| | 15 |
| Windscreen washer not working | 14 |
| Offside Front Shock absorber has an excessively worn bush |2.7.4| | 13 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 13 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 13 |
| Nearside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 13 |
| Offside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 13 |
| Nearside Obligatory mirror seriously damaged, affecting the rear view |8.1.2a| | 12 |
| Offside Rear fog lamp not working (4.5.1 (a) (ii)) | 12 |
| Windscreen wiper blade insecure | 11 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 10 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 9 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 9 |
| Parking brake lever has no reserve travel |3.1.6b| | 9 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 9 |
| Brake load sensing valve seized |3.6.E.3| | 8 |
| Centre Exhaust system not adequately supported |7.1.1| | 8 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 8 |
| Offside Front Lower Shock absorber has an excessively worn bush |2.7.4| | 8 |
| Offside Rear Shock absorber has a serious fluid leak |2.7.3| | 8 |
| Centre Statutory seat belt missing |5.1.1| | 8 |
| Exhaust system insecure (6.1.2 (a)) | 8 |
| Rear brake application uneven | 7 |
| Nearside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 7 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 7 |
| Offside Rear Rear fog lamp not working |1.3.2b| | 7 |
| Steering system excessively tight |2.2.D.1| | 7 |
| Nearside Rear Rear position lamp|s| not working |1.1.A.3b| | 7 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 7 |
| Offside Front Axle king pin has excessive play in pin and/or bush adversely affecting the steering |2.5.A.3a| | 7 |
| Stop lamp(s) all not working (4.3.1 (a) (iii)) | 6 |
| Offside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 6 |
| Rear Exhaust system not adequately supported |7.1.1| | 6 |
| Offside Rear Position lamp not working (4.2.1 (a) (ii)) | 6 |
| Nearside Front Shock absorber has an excessively worn bush |2.7.4| | 6 |
| Offside Rear Direction indicator incorrect colour |1.4.A.2f| | 6 |
| Offside Front Track rod end ball joint has excessive play (2.1.3 (b) (i)) | 6 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 6 |
| Rear brake binding | 5 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 5 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 5 |
| Nearside Front Lower Suspension arm ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 5 |
| Nearside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 5 |
| Offside Rear Direction indicator not working |1.4.A.2c| | 5 |
| Nearside Front Outer Track rod end ball joint dust cover excessively damaged or deteriorated so that it no longer prevents the ingress of dirt (2.1.3 (g) (ii)) | 5 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 5 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 5 |
| Offside Rear Rear fog lamp not working (4.5.1 (a) (ii)) | 5 |
| Oil leaking excessively from engine (8.4.1 (a) (i)) | 5 |
| Offside Rear Shock absorbers has a serious fluid leak | 5 |
| Offside rear brake recording little or no effort |3.7.B.5a| | 5 |
| Offside Front Lower Suspension arm ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 5 |
| Nearside Axle king pin has excessive play in pin and/or bush adversely affecting the steering |2.5.A.3a| | 5 |
| Battery insecure and likely to fall from carrier (4.13 (a) (ii)) | 5 |
| Towbar retaining device missing |6.6.3a| | 4 |
| Nearside Rear Service brake effort inadequate at a wheel (1.2.1 (a) (i)) | 4 |
| Nearside Rear Shock absorbers has a serious fluid leak | 4 |
| Front brake application uneven | 4 |
| Nearside Front Track rod end ball joint has excessive play (2.1.3 (b) (i)) | 4 |
| Service brake efficiency below requirements |1.2.2 |a| |i|| | 4 |
| Rear Exhaust has part of the system excessively deteriorated |7.1.1a| | 4 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 4 |
| Emissions not tested |7.0| | 4 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 4 |
| Nearside Rear Direction indicator incorrect colour |1.4.A.2f| | 4 |
| Offside Rear Direction indicator excessively damaged so that it is not visible from a reasonable distance |1.4.A.2e| | 4 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 4 |
| Nearside Rear Shock absorber has a serious fluid leak |2.7.3| | 4 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 4 |
| Nearside Direction indicator flashing more than 120 times a minute |1.4.A.2g| | 4 |
| Offside Front Outer Track rod end ball joint dust cover excessively damaged or deteriorated so that it no longer prevents the ingress of dirt (2.1.3 (g) (ii)) | 4 |
| Nearside Front Axle king pin has excessive play in pin and/or bush adversely affecting the steering |2.5.A.3a| | 4 |
| Brake pedal anti-slip provision incomplete |3.3.A.1b| | 4 |
| Offside Rear Rear position lamp|s| not working |1.1.A.3b| | 4 |
| Offside Front Service brake excessively binding (1.2.1 (f)) | 4 |
| Nearside Obligatory mirror seriously damaged, affecting the rear view (3.3 (b) (ii)) | 4 |
| Offside Rear Service brake effort inadequate at a wheel (1.2.1 (a) (i)) | 3 |
| Nearside Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Rear fog lamp not working |4.5.1 |a| |ii|| | 3 |
| Nearside Rear Direction indicator not working |1.4.A.2c| | 3 |
| Offside Rear Lower Shock absorber has an excessively worn bush |2.7.4| | 3 |
| Nearside Rear Service brake excessively fluctuating (1.2.1 (e)) | 3 |
| Nearside Rear Service brake lagging in operation (1.2.1 (d)) | 3 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Windscreen damaged and affecting the drivers view of the road (3.2 (a) (ii)) | 3 |
| Nearside Rear Leaf spring cracked |2.4.B.1a| | 3 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Brake hose damaged | 3 |
| Exhaust silencer insecure (8.1.1 (b) (i)) | 3 |
| Offside Front Inner Track rod end ball joint dust cover excessively damaged or deteriorated so that it no longer prevents the ingress of dirt (2.1.3 (g) (ii)) | 3 |
| Offside Track rod end ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.2.C.1c| | 3 |
| Nearside Track rod end ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.2.C.1c| | 3 |
| Offside Obligatory mirror seriously damaged, affecting the rear view |8.1.2a| | 3 |
| Nearside Front Brake hose twisted |found during steering lock to lock check| |2.2.D.2b| | 3 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Nearside Rear Position lamp not working |4.2.1 |a|| | 3 |
| Nearside Rear Position lamp showing white light to the rear (4.2.3 (a) (ii)) | 3 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 3 |
| Offside Rear rear brake excessively fluctuating |3.7.B.3| | 3 |
| Nearside Side repeater missing |1.4.A.2b| | 3 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 3 |
| Rear Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 3 |
| Offside Rear Stop lamp not working |1.2.1b| | 3 |
| Offside Front Upper Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 3 |
| Offside Front Body has a sharp edge caused by damage |6.1.C.1| | 3 |
| Offside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 3 |
| Nearside Rear Stop lamp not working |1.2.1b| | 3 |
| Offside Rear Rear position lamp|s| adversely affected by the operation of another lamp |1.1.A.3f| | 3 |
| Offside front brake binding |3.7.B.1| | 3 |
| Offside Axle king pin has excessive play in pin and/or bush adversely affecting the steering |2.5.A.3a| | 3 |
| Offside Front Direction indicator not working |1.4.A.2c| | 3 |
| Offside Rear Rear fog lamp not working |4.5.1 |a| |ii|| | 3 |
| Rear Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 3 |
| Offside Rear Direction indicator incomplete |1.5.A1b| | 3 |
| Front brake disc in such a condition that it is seriously weakened | 3 |
| Nearside rear brake recording little or no effort |3.7.B.5a| | 3 |
| Rear fog lamp tell tale not working |1.3.1b| | 3 |
| Offside Front wheel bearing has excessive play |2.5.A.3c| | 3 |
| Rear Stop lamp not working |1.2.1b| | 3 |
| Nearside Front Service brake excessively binding (1.2.1 (f)) | 3 |
| Nearside Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Offside Front Seat belt anchorage prescribed area strength or continuity significantly reduced (7.1.1 (a) (i)) | 3 |
| Front Bumper insecure (6.1.4 (a) (i)) | 3 |
| Rear Service brake imbalanced across an axle (1.2.1 (b) (i)) | 3 |