| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 1491 |
| Windscreen wiper does not clear the windscreen effectively | 654 |
| Registration plate lamp issues | 380 |
| Brake pipe excessively corroded | 376 |
| Brakes imbalanced across an axle | 310 |
| Rear brake binding | 310 |
| Parking brake: efficiency below requirements |3.7.B.7| | 162 |
| Rear parking brake recording little or no effort | 114 |
| Anti-lock braking system warning lamp indicates an ABS fault | 114 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 89 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 84 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 78 |
| Offside Stop lamp not working |1.2.1b| | 74 |
| Offside front brake binding |3.7.B.1| | 74 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 73 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 73 |
| Nearside Stop lamp not working |1.2.1b| | 69 |
| Parking brake lever has no reserve travel |3.1.6b| | 67 |
| Rear brake application uneven | 64 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 56 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 54 |
| Offside Front Service brake excessively binding (1.2.1 (f)) | 53 |
| Offside Front front brake binding |3.7.B.1| | 52 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 51 |
| Front brake application uneven | 49 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 49 |
| Rear fog lamp not working |1.3.2b| | 47 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 47 |
| Power steering component|s| leaking |2.3.3b| | 44 |
| Offside Rear wheel bearing has excessive play |2.6.2| | 43 |
| Nearside Rear Shock absorber has a serious fluid leak |2.7.3| | 43 |
| Fuel system component leaking |7.2.3| | 41 |
| Nearside front brake binding |3.7.B.1| | 40 |
| Offside Rear Shock absorber has a serious fluid leak |2.7.3| | 38 |
| Nearside Front Service brake excessively binding (1.2.1 (f)) | 37 |
| Offside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 36 |
| Horn not working |1.6.2a| | 36 |
| Nearside Front front brake binding |3.7.B.1| | 36 |
| Rear Mechanical brake component has restricted free movement | 35 |
| Front brake disc in such a condition that it is seriously weakened | 35 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 35 |
| Mechanical brake component has restricted free movement | 34 |
| Offside Rear wheel bearing rough when rotated |2.6.1| | 34 |
| Nearside Rear wheel bearing has excessive play |2.6.2| | 33 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 33 |
| Battery insecure |1.9.1| | 32 |
| Offside Front Service brake excessively binding |1.2.1 |f|| | 31 |
| Offside Rear fog lamp not working |1.3.2b| | 31 |
| Power steering fluid level below minimum |2.3.1| | 31 |
| Nearside Front Anti-roll bar linkage ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.4.G.2| | 30 |
| Nearside Rear Stop lamp not working |1.2.1b| | 30 |
| Rear Exhaust system not adequately supported |7.1.1| | 30 |
| Nearside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 29 |
| Rear fog lamp tell tale not working |1.3.1b| | 29 |
| Power steering pipe|s| or hose|s| leaking |2.3.3b| | 29 |
| Nearside Front Anti-roll bar linkage ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.4.G.2| | 28 |
| Offside Rear Rear wheel bearing has excessive play |2.6.2| | 27 |
| Offside Front Anti-roll bar linkage ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.4.G.2| | 27 |
| Nearside Rear wheel bearing rough when rotated |2.6.1| | 27 |
| Hazard warning switch faulty |1.4.B.1d| | 26 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 26 |
| Nearside Front Service brake excessively binding |1.2.1 |f|| | 26 |
| Exhaust system not adequately supported |7.1.1| | 26 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 26 |
| Offside Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 25 |
| Registration plate issues | 24 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 24 |
| Offside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 24 |
| Nearside Rear Rear wheel bearing has excessive play |2.6.2| | 23 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 23 |
| Offside Rear Rear wheel bearing rough when rotated |2.6.1| | 23 |
| Power steering pipe|s| or hose|s| leaking from a joint |2.3.3b| | 23 |
| Windscreen wiper blade insecure | 22 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 22 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 22 |
| Offside Rear Stop lamp not working |1.2.1b| | 21 |
| Offside Front Anti-roll bar linkage ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.4.G.2| | 21 |
| Engine MIL inoperative or indicates a malfunction |8.2.1.2 |h|| | 21 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 21 |
| Nearside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 21 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits |8.2.1.2 |c|| | 20 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 20 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 20 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 19 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 19 |
| Central Exhaust has a major leak of exhaust gases |7.1.2| | 18 |
| Nearside rear brake recording little or no effort |3.7.B.5a| | 18 |
| Front brake excessively fluctuating | 18 |
| Nearside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 17 |
| Offside Rear Shock absorbers has a serious fluid leak | 17 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 17 |
| Offside Indicator tell tale inoperative |1.4.A.2a| | 16 |
| Offside rear brake recording little or no effort |3.7.B.5a| | 16 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 16 |
| Hazard warning switch inoperative (4.4.2 (a) (ii)) | 16 |
| Offside Stop lamp|s| not working |4.3.1 |a| |ii|| | 15 |
| Offside Rear Service brake excessively binding |1.2.1 |f|| | 15 |
| Windscreen washer not working | 15 |
| Nearside Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 15 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 14 |
| Offside Front Position lamp not working |4.2.1 |a|| | 14 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 14 |
| Central Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 14 |
| Offside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 13 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 13 |
| Offside Track rod end ball joint has excessive play |2.2.B.1f| | 13 |
| Offside Front Suspension arm has excessive play in a pin/bush |2.4.G.2| | 13 |
| Offside Rear passenger door cannot be opened from outside the vehicle |6.2.B.1c| | 13 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 13 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 13 |
| Horn not working (7.7 (a)) | 13 |
| Nearside Rear Rear wheel bearing rough when rotated |2.6.1| | 12 |
| Service brake: efficiency below requirements |3.7.B.7| | 12 |
| Centre Exhaust system not adequately supported |7.1.1| | 12 |
| Brake hose excessively deteriorated | 12 |
| Electronic stability control warning lamp indicates a fault (7.12 (e)) | 12 |
| Emissions not tested (8.2.1.2 (d)) | 12 |
| Emissions not tested |7.3.A.1| | 11 |
| Nearside Stop lamp|s| not working |4.3.1 |a| |ii|| | 11 |
| Nearside Front Upper Anti-roll bar linkage ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.4.G.2| | 11 |
| Brake pedal anti-slip provision incomplete |3.3.A.1b| | 11 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds default limits (8.2.1.2 (b)) | 11 |
| Offside Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 11 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 11 |
| Service brake efficiency below requirements (1.2.2 (a) (i)) | 11 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 11 |