| Most common failures | No# failures |
|---|
| Windscreen wiper does not clear the windscreen effectively | 362 |
| Headlamp aim out of alignment | 270 |
| Brakes imbalanced across an axle | 246 |
| Registration plate lamp issues | 242 |
| Brake pipe excessively corroded | 179 |
| Exhaust emits an excessive level of metered smoke |7.4.B.3a| | 123 |
| Exhaust emissions exceed manufacturers specified limit (8.2.2.2 (a)) | 89 |
| Rear brake binding | 83 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 83 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 83 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 64 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 59 |
| Parking brake: efficiency below requirements |3.7.B.7| | 54 |
| Anti-lock braking system warning lamp indicates an ABS fault | 45 |
| Registration plate issues | 42 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 41 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 40 |
| Front brake application uneven | 39 |
| Windscreen washer not working | 35 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 35 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 33 |
| Engine MIL inoperative or indicates a malfunction (8.2.2.2 (g)) | 32 |
| Rear brake application uneven | 31 |
| Offside Stop lamp not working |1.2.1b| | 29 |
| Parking brake lever has no reserve travel |3.1.6b| | 29 |
| Rear brake disc in such a condition that it is seriously weakened | 29 |
| Exhaust emissions exceed manufacturer`s specified limit |8.2.2.2 |a|| | 29 |
| Rear parking brake recording little or no effort | 28 |
| Exhaust emissions exceed default limit of 1.5m-1 (8.2.2.2 (b)) | 28 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 26 |
| Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c)) | 26 |
| Nearside Front Macpherson strut has excessive movement at the upper attachment |2.5.A.1c| | 24 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 23 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 22 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 22 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 22 |
| Offside Front Suspension arm ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 21 |
| Nearside Stop lamp not working |1.2.1b| | 20 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 20 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 20 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 20 |
| Rear Mechanical brake component has restricted free movement | 19 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 19 |
| Parking brake lever has excessive movement indicating incorrect adjustment |1.1.6 |c|| | 18 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 18 |
| Front brake disc in such a condition that it is seriously weakened | 18 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 17 |
| Offside Front Macpherson strut top bush or bearing has excessive wear or free play (5.3.4 (a) (i)) | 16 |
| Offside Rear Parking brake inoperative on one side (1.4.1 (a)) | 16 |
| Front brake excessively fluctuating | 15 |
| Horn not working |1.6.2a| | 15 |
| Offside Rear Service brake excessively binding |1.2.1 |f|| | 15 |
| Nearside Front Anti-roll bar linkage ball joint excessively worn (5.3.4 (a) (i)) | 15 |
| Offside Front Position lamp not working |4.2.1 |a|| | 14 |
| Offside Front Macpherson strut has excessive movement at the upper attachment |2.5.A.1c| | 14 |
| Horn not working (7.7 (a) (ii)) | 14 |
| Exhaust emissions test not completed because smoke levels are significantly in excess of the specified limit values (8.2.2.2 (f)) | 14 |
| Electronic stability control warning lamp indicates a fault (7.12 (e)) | 14 |
| Exhaust emissions exceed default limit of 1.5m-1 |8.2.2.2 |b|| | 13 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 13 |
| Nearside Front Macpherson strut top bush or bearing has excessive wear or free play (5.3.4 (a) (i)) | 13 |
| Nearside Rear Stop lamp not working |1.2.1b| | 12 |
| Nearside Rear Service brake excessively binding |1.2.1 |f|| | 12 |
| Offside Parking brake inoperative on one side (1.4.1 (a)) | 12 |
| Offside Rear Stop lamp not working |1.2.1b| | 11 |
| Nearside Stop lamp|s| not working |4.3.1 |a| |ii|| | 11 |
| Horn not working |7.7 |a| |ii|| | 11 |
| Offside Rear Service brake excessively fluctuating (1.2.1 (e)) | 11 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 10 |
| Engine MIL inoperative or indicates a malfunction |8.2.2.2 |g|| | 10 |
| Brake hose excessively deteriorated | 10 |
| Nearside Front Suspension arm ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 10 |
| Nearside Rear Parking brake inoperative on one side (1.4.1 (a)) | 10 |
| Offside Front Service brake excessively binding (1.2.1 (f)) | 10 |
| Offside Stop lamp|s| not working |4.3.1 |a| |ii|| | 9 |
| Exhaust emissions exceed manufacturers specified limit 0.74 (8.2.2.2 (a)) | 9 |
| Exhaust emits an excessive level of metered smoke for a turbo charged engine |7.4.B.3b| | 8 |
| Supplementary restraint system warning lamp indicates a fault |7.1.6 |a|| | 8 |
| Battery insecure |1.9.1| | 8 |
| Nearside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 8 |
| Exhaust on a vehicle fitted with a diesel particulate filter emits visible smoke of any colour (8.2.2.2 (d)) | 8 |
| Offside Front Lower Suspension arm ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 8 |
| Nearside Front Service brake excessively binding (1.2.1 (f)) | 8 |
| Offside Front Service brake excessively fluctuating (1.2.1 (e)) | 8 |
| Service brake efficiency below requirements (1.2.2 (a) (i)) | 8 |
| Offside Front Track rod end ball joint has excessive play (2.1.3 (b) (i)) | 8 |
| Offside Side repeater incorrect colour (4.4.3 (a)) | 8 |
| rear parking |secondary| brakes imbalanced | 7 |
| Nearside rear brake recording little or no effort |3.7.B.5a| | 7 |
| Windscreen has damage | 7 |
| Service brake efficiency below requirements |1.2.2 |a| |i|| | 7 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 7 |