| Most common failures | No# failures |
|---|
| Registration plate lamp issues | 238 |
| Headlamp aim out of alignment | 195 |
| Windscreen wiper does not clear the windscreen effectively | 137 |
| Brake pipe excessively corroded | 104 |
| Registration plate issues | 67 |
| Brakes imbalanced across an axle | 61 |
| Service brake: efficiency below requirements |3.7.B.7| | 52 |
| Parking brake: efficiency below requirements |3.7.B.7| | 45 |
| Offside Rear fog lamp not working |1.3.2b| | 40 |
| Windscreen has damage | 33 |
| Nearside Stop lamp not working |1.2.1b| | 33 |
| Rear fog lamp not working |1.3.2b| | 26 |
| Offside Stop lamp not working |1.2.1b| | 23 |
| Exhaust system not adequately supported |7.1.1| | 23 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 21 |
| Centre Exhaust system not adequately supported |7.1.1| | 19 |
| Service brake efficiency below requirements (1.2.2 (a) (i)) | 19 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 19 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 18 |
| Windscreen washer not working | 16 |
| Nearside Obligatory mirror seriously damaged, affecting the rear view |8.1.2a| | 13 |
| Emissions not tested |7.0| | 13 |
| Nearside Rear Direction indicator incorrect colour |1.4.A.2f| | 12 |
| Rear Exhaust has part of the system excessively deteriorated |7.1.1a| | 12 |
| Offside Rear Rear fog lamp not working |1.3.2b| | 11 |
| Nearside Rear Direction indicator incomplete |1.5.A1b| | 11 |
| Parking brake lever has no reserve travel |3.1.6b| | 11 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 10 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 10 |
| Nearside Rear position lamp|s| adversely affected by the operation of another lamp |1.1.A.3f| | 9 |
| Offside Rear Shock absorber has a serious fluid leak |2.7.3| | 9 |
| Steering system excessively tight |2.2.D.1| | 9 |
| Nearside Rear Direction indicator not working |1.4.A.2c| | 9 |
| Offside Rear position lamp|s| adversely affected by the operation of another lamp |1.1.A.3f| | 9 |
| Offside Front Shock absorber has an excessively worn bush |2.7.4| | 7 |
| Service brake efficiency below requirements |1.2.2 |a| |i|| | 7 |
| Rear Exhaust system not adequately supported |7.1.1| | 7 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 7 |
| Rear brake application uneven | 7 |
| Fuel tank insecure |7.2.1| | 7 |
| Rear Exhaust has a part missing |7.1.1a| | 6 |
| Offside Front Lower Shock absorber has an excessively worn bush |2.7.4| | 6 |
| Exhaust has part of the system excessively deteriorated |7.1.1a| | 6 |
| Rear fog lamp not working (4.5.1 (a) (ii)) | 6 |
| Brake hose excessively deteriorated | 6 |
| Front brake disc in such a condition that it is seriously weakened | 6 |
| Offside Rear Direction indicator not working |1.4.A.2c| | 6 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 6 |
| Nearside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 6 |
| Battery insecure |1.9.1| | 6 |
| Nearside Headlamp aim beam image kick up to the offside |1.8| | 6 |
| Offside Headlamp aim beam image kick up to the offside |1.8| | 6 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 6 |
| Offside Rear Stop lamp not working |1.2.1b| | 5 |
| Nearside Rear Stop lamp not working |1.2.1b| | 5 |
| Offside front brake binding |3.7.B.1| | 5 |
| Nearside Front Shock absorber has an excessively worn bush |2.7.4| | 5 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 5 |
| Offside Steering pivot point has excessive play |2.2.B.1g| | 5 |
| Offside rear brake recording little or no effort |3.7.B.5a| | 5 |
| Nearside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 5 |
| Offside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 5 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 5 |
| Rear brake binding | 5 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 5 |
| Offside Stop lamp adversely affected by the operation of another lamp |1.2.1f| | 5 |
| Rear parking brake recording little or no effort | 5 |
| Centre Statutory seat belt missing |5.1.1| | 5 |
| Offside Rear fog lamp not working (4.5.1 (a) (ii)) | 5 |
| Centre Seat belt locking mechanism does not secure or release |5.2.5a| | 5 |
| Nearside Front Lower Shock absorber has an excessively worn bush |2.7.4| | 5 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 5 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 4 |
| Service brake efficiency less than 50% of the required value (1.2.2 (a) (ii)) | 4 |
| Front brake application uneven | 4 |
| Oil leaking excessively from engine |8.4.1 |a| |i|| | 4 |
| Offside Front Axle king pin has excessive play in pin and/or bush adversely affecting the steering |2.5.A.3a| | 4 |
| Offside Obligatory mirror seriously damaged, affecting the rear view |8.1.2a| | 4 |
| Offside Front Lower Suspension arm ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 4 |
| Offside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 4 |
| Offside Rear Direction indicator incorrect colour |1.4.A.2f| | 4 |
| Exhaust system insecure (6.1.2 (a)) | 4 |
| Nearside Front Leaf spring has a deteriorated shackle pin rubber bush resulting in excessive movement |2.4.B.2| | 4 |
| Offside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 4 |
| Exhaust has a part missing |7.1.1a| | 4 |
| Offside Rear Position lamp adversely affected by the operation of another lamp (4.2.3 (c)) | 4 |
| Nearside Rear Rear position lamp|s| adversely affected by the operation of another lamp |1.1.A.3f| | 4 |
| Offside Headlamp insecure |1.7.3| | 4 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 4 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 4 |
| Nearside Rear Outline marker lamp not working (4.2.1 (a) (ii)) | 4 |
| Offside Front Steering arm has relative movement at its fixings |2.2.B.1h| | 3 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 3 |
| Offside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 3 |
| Rear position lamp|s| incorrect colour |1.1.A.3e| | 3 |
| Nearside Front 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 Rear Stop lamp emits other than a steady red light |1.2.1e| | 3 |
| Trailer electrical socket damaged so that lead cannot be securely connected |1.9.3b| | 3 |
| Brake load sensing valve seized |3.6.E.3| | 3 |
| Offside Rear Brake pipe kinked |3.6.B.2b| | 3 |
| Nearside Front Brake hose twisted |3.6.B.4c| | 3 |
| Nearside Front Shock absorber has a serious fluid leak |2.7.3| | 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 |
| Front brake excessively fluctuating | 3 |
| Front Exhaust system not adequately supported |7.1.1| | 3 |
| Fuel system component insecure |7.2.1| | 3 |
| Offside Rear Direction indicator incomplete |1.5.A1b| | 3 |
| Brake hose damaged | 3 |
| Nearside Front Lower Suspension arm ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 3 |
| Battery insecure and likely to fall from carrier (4.13 (a) (ii)) | 3 |
| Nearside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 3 |
| Nearside front brake binding |3.7.B.1| | 3 |
| Nearside Front front brake binding |3.7.B.1| | 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 |
| Nearside Rear Shock absorbers has a serious fluid leak | 3 |
| Offside Rear Stop lamp adversely affected by the operation of another lamp |1.2.1f| | 3 |
| Brake pedal anti-slip provision incomplete |3.3.A.1b| | 3 |
| Nearside Rear Shock absorber has a serious fluid leak |2.7.3| | 3 |
| Nearside Front Axle king pin has excessive play in pin and/or bush adversely affecting the steering |2.5.A.3a| | 3 |
| Offside Front Leaf spring has a deteriorated shackle pin rubber bush resulting in excessive movement |2.4.B.2| | 3 |
| Direction indicators flashing more than 120 times a minute |1.4.A.2g| | 3 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 3 |
| Nearside Rear position lamp|s| insecure |1.1.A.3a| | 3 |
| Offside Rear Rear fog lamp not working (4.5.1 (a) (ii)) | 3 |
| Rear fog lamp tell tale not working |1.3.1b| | 3 |
| Nearside Front Leaf spring has excessive wear in a shackle pin and/or bush |2.4.B.2| | 3 |
| Offside Front Leaf spring has excessive wear in a shackle pin and/or bush |2.4.B.2| | 3 |
| Offside Rear Shock absorbers has a serious fluid leak | 3 |
| Front Bumper insecure (6.1.4 (a) (i)) | 3 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 3 |
| Offside Headlamp excessively deteriorated so that the light output is severely reduced |1.7.5a| | 3 |
| Nearside rear brake recording little or no effort |3.7.B.5a| | 3 |
| Centre Front Statutory seat belt missing |5.1.1| | 3 |
| Nearside Front Lower Suspension arm ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.4.G.2| | 3 |
| Offside Rear position lamp|s| incomplete |1.1.4a| | 3 |
| Offside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 3 |
| Offside Rear Service brake effort inadequate at a wheel (1.2.1 (a) (i)) | 3 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Central Seat belt buckle missing (7.1.2 (d)) | 3 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 3 |