| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 247 |
| Windscreen wiper does not clear the windscreen effectively | 221 |
| Registration plate lamp issues | 107 |
| Brakes imbalanced across an axle | 100 |
| Brake pipe excessively corroded | 65 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 64 |
| Offside Stop lamp not working |1.2.1b| | 63 |
| Nearside Stop lamp not working |1.2.1b| | 60 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 47 |
| Registration plate issues | 46 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 46 |
| Brake hose excessively deteriorated | 42 |
| Front brake disc in such a condition that it is seriously weakened | 40 |
| Rear brake binding | 35 |
| Nearside Front Direction indicator incorrect colour |1.4.A.2f| | 34 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 33 |
| Offside Front Direction indicator incorrect colour |1.4.A.2f| | 28 |
| Nearside Rear Stop lamp not working |1.2.1b| | 27 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 27 |
| Parking brake: efficiency below requirements |3.7.B.7| | 26 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 25 |
| Exhaust emits an excessive level of metered smoke for a non-turbo charged engine |7.4.B.3b| | 23 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 23 |
| Windscreen has damage | 19 |
| Nearside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 19 |
| Parking brake lever has no reserve travel |3.1.6b| | 18 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 17 |
| Exhaust emissions exceed manufacturers specified limit (8.2.2.2 (a)) | 17 |
| Exhaust emits an excessive level of metered smoke for a turbo charged engine |7.4.B.3b| | 17 |
| Rear parking brake recording little or no effort | 17 |
| Offside Rear Stop lamp not working |1.2.1b| | 17 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 17 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 17 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 16 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 16 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 16 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 15 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 14 |
| Service brake: efficiency below requirements |3.7.B.7| | 14 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 13 |
| Offside Front Direction indicator incorrect colour (4.4.3 (a)) | 13 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 13 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 13 |
| Offside Rear Shock absorbers has a serious fluid leak | 13 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 13 |
| Nearside Rear Shock absorbers has a serious fluid leak | 13 |
| Brake hose damaged | 12 |
| Nearside Front Direction indicator incorrect colour (4.4.3 (a)) | 11 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 11 |
| Nearside Rear coil spring broken |2.4.C.1a| | 11 |
| Windscreen wiper blade insecure | 11 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 11 |
| Offside Front coil spring broken |2.4.C.1a| | 11 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 11 |
| Offside Front Coil spring fractured or broken (5.3.1 (b) (i)) | 10 |
| Offside Front Service brake excessively binding (1.2.1 (f)) | 10 |
| Offside Rear coil spring broken |2.4.C.1a| | 10 |
| Engine MIL inoperative or indicates a malfunction (8.2.2.2 (g)) | 10 |
| Nearside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 10 |
| Rear Mechanical brake component has restricted free movement | 10 |
| Nearside Front Anti-roll bar linkage pin or bush excessively worn (5.3.4 (a) (i)) | 10 |
| Offside Rear Shock absorber has a serious fluid leak |2.7.3| | 10 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 10 |
| Offside Front Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 9 |
| Rear Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 9 |
| Nearside Front Anti-roll bar linkage has excessive play in a pin/bush |2.4.G.2| | 9 |
| Front brake application uneven | 9 |
| Exhaust emissions exceed manufacturer`s specified limit |8.2.2.2 |a|| | 9 |
| Nearside Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 9 |
| Nearside Front Anti-roll bar linkage pin or bush excessively worn |5.3.4 |a| |i|| | 9 |
| Service brake efficiency below requirements (1.2.2 (a) (i)) | 9 |
| Nearside Front wheel bearing rough when rotated |2.5.A.2| | 9 |
| Nearside Front Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 9 |
| Windscreen washer not working | 9 |
| Offside Rear Coil spring fractured or broken (5.3.1 (b) (i)) | 8 |
| Nearside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 8 |
| Front brake excessively fluctuating | 8 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 8 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 8 |
| Offside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 8 |
| Nearside Front constant velocity joint gaiter deteriorated to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 8 |
| Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c)) | 8 |
| Offside Front Suspension arm ball joint excessively worn |5.3.4 |a| |i|| | 8 |
| Rear brake application uneven | 7 |
| Offside Front Shock absorber has a serious fluid leak |2.7.3| | 7 |
| Offside Side repeater not working (4.4.1 (a) (ii)) | 7 |
| Offside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 7 |
| Nearside Front Shock absorber has a serious fluid leak |2.7.3| | 7 |
| Nearside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 7 |
| Offside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 7 |
| Anti-lock braking system warning lamp indicates an ABS fault | 7 |
| Exhaust emissions exceed level of metered smoke for a turbo charged engine (8.2.2.2 (b)) | 7 |
| Offside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 7 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 7 |
| Offside Front Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 7 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 6 |
| Brake servo vacuum pipe split |3.6.C.1b| | 6 |
| Offside Track rod end ball joint has excessive play |2.2.B.1f| | 6 |
| Nearside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 6 |
| Offside Front Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 6 |
| Central Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 6 |
| Offside Front Anti-roll bar linkage pin or bush excessively worn |5.3.4 |a| |i|| | 6 |
| Rear Exhaust system not adequately supported |7.1.1| | 6 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 6 |
| Nearside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 6 |
| Nearside Front constant velocity joint gaiter split |2.5.C.1a| | 6 |
| Nearside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 6 |
| Nearside Rear Shock absorber has a serious fluid leak |2.7.3| | 6 |
| Nearside Front Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 6 |
| Nearside Front Track rod end ball joint has excessive play |2.2.B.1f| | 6 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 6 |
| Nearside Front coil spring broken |2.4.C.1a| | 6 |
| Offside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 5 |
| Nearside Front Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 5 |
| Emissions not tested (8.2.2.2 (e)) | 5 |
| Offside Front Suspension arm has excessive play in a pin/bush |2.4.G.2| | 5 |
| Offside Front Lower Suspension arm ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 5 |
| Nearside Front Direction indicators incorrect colour |1.4.A.2f| | 5 |
| Nearside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 5 |
| Nearside Headlamp insecure |1.7.3| | 5 |
| Nearside Front Track rod end ball joint has excessive play (2.1.3 (b) (i)) | 5 |
| Nearside Outer Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 5 |
| Offside Front Suspension arm ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 5 |
| Offside Front Anti-roll bar linkage rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 5 |
| Nearside Rear Service brake effort inadequate at a wheel (1.2.1 (a) (i)) | 5 |
| Offside Front Anti-roll bar linkage pin or bush excessively worn (5.3.4 (a) (i)) | 5 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 5 |
| Nearside Windscreen wiper not working (3.4 (a)) | 5 |
| Offside rear brake recording little or no effort |3.7.B.5a| | 5 |
| Nearside Rear Service brake excessively binding |1.2.1 |f|| | 5 |
| Offside Rear Service brake excessively binding |1.2.1 |f|| | 5 |
| Nearside Front Shock absorbers has a serious fluid leak | 5 |
| Front brake disc excessively pitted |3.5.1h| | 5 |
| Nearside Front Suspension arm has excessive play in a ball joint |2.4.G.2| | 5 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 5 |
| Nearside Front Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 5 |