| Most common failures | No# failures |
|---|
| Registration plate lamp issues | 946 |
| Windscreen wiper does not clear the windscreen effectively | 637 |
| Headlamp aim out of alignment | 580 |
| Brakes imbalanced across an axle | 248 |
| Service brake: efficiency below requirements |3.7.B.7| | 235 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 144 |
| Centre Stop lamp not working |1.2.1b| | 134 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 114 |
| Windscreen has damage | 112 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 98 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 91 |
| Exhaust emits an excessive level of metered smoke for a turbo charged engine |7.4.B.3b| | 89 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 87 |
| Registration plate issues | 87 |
| Nearside rear brake recording little or no effort |3.7.B.5a| | 83 |
| Offside rear brake recording little or no effort |3.7.B.5a| | 78 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 67 |
| Parking brake lever has no reserve travel |3.1.6b| | 65 |
| Front brake disc in such a condition that it is seriously weakened | 62 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 61 |
| Offside Rear Direction indicator incorrect colour |1.4.A.2f| | 60 |
| Service brake efficiency below requirements (1.2.2 (a) (i)) | 60 |
| Nearside Rear Direction indicator incorrect colour |1.4.A.2f| | 56 |
| Parking brake: efficiency below requirements |3.7.B.7| | 55 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 48 |
| Offside Stop lamp not working |1.2.1b| | 46 |
| Headlamp switch faulty |1.7.1| | 46 |
| Offside Track rod end ball joint has excessive play |2.2.B.1f| | 41 |
| Nearside Track rod end ball joint has excessive play |2.2.B.1f| | 40 |
| Offside Headlamp not working on main beam |1.7.5a| | 40 |
| Nearside Front Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 40 |
| Nearside Front Track rod end ball joint has excessive play |2.2.B.1f| | 40 |
| Nearside Headlamp not working on main beam |1.7.5a| | 38 |
| Rear parking brake recording little or no effort | 38 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 37 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 36 |
| Nearside Rear Shock absorber has an excessively worn bush |2.7.4| | 35 |
| Battery insecure |1.9.1| | 33 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 33 |
| Nearside Stop lamp not working |1.2.1b| | 31 |
| Nearside Front Suspension arm has excessive play in a pin/bush |2.4.G.2| | 31 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 30 |
| Windscreen washer not working | 30 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 30 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 29 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 29 |
| Offside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 28 |
| Offside Rear Shock absorber has an excessively worn bush |2.7.4| | 28 |
| Offside Front Track rod end ball joint has excessive play |2.2.B.1f| | 28 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 28 |
| Offside Rear fog lamp not working |1.3.2b| | 28 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 28 |
| Service brake efficiency below requirements |1.2.2 |a| |i|| | 27 |
| Nearside Front Suspension arm has excessive play in a ball joint |2.4.G.2| | 27 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 27 |
| Offside Obligatory mirror seriously damaged, affecting the rear view |8.1.2a| | 26 |
| Nearside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 26 |
| Nearside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 25 |
| Rear fog lamp not working |1.3.2b| | 25 |
| Brake pedal anti-slip provision missing |3.3.A.1b| | 24 |
| rear brake recording little or no effort |3.7.B.5a| | 24 |
| Spare wheel carrier insecure |6.4.2| | 23 |
| Nearside Rear wheel bearing rough when rotated |2.6.1| | 23 |
| Fuel system component leaking |7.2.3| | 23 |
| Stop lamp not working |1.2.1b| | 23 |
| Exhaust emissions exceed manufacturers specified limit (8.2.2.2 (a)) | 23 |
| Offside Rear Upper Shock absorber has an excessively worn bush |2.7.4| | 22 |
| Centre Rear Stop lamp not working |1.2.1b| | 22 |
| Emissions not tested |7.0| | 22 |
| Nearside Rear rear brake recording little or no effort |3.7.B.5a| | 22 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 22 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 22 |
| Offside Front Suspension arm has excessive play in a ball joint |2.4.G.2| | 21 |
| Rear Exhaust system not adequately supported |7.1.1| | 21 |
| Rear brake binding | 21 |
| Offside Front Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 21 |
| Offside Rear rear brake recording little or no effort |3.7.B.5a| | 21 |
| Nearside Headlamp insecure |1.7.3| | 21 |
| Nearside Obligatory mirror seriously damaged, affecting the rear view |8.1.2a| | 20 |
| Front brake application uneven | 19 |
| Nearside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 19 |
| Rear brake application uneven | 18 |
| Power steering fluid level below minimum |2.3.1| | 18 |
| Nearside Front Lower Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 18 |
| Nearside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 18 |
| Offside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 17 |
| Windscreen wiper blade insecure | 17 |
| Brake pipe excessively corroded | 17 |
| Offside Rear Service brake effort inadequate at a wheel (1.2.1 (a) (i)) | 17 |
| Offside Rear Direction indicator incorrect colour (4.4.3 (a)) | 17 |
| Nearside Rear Stop lamp not working |1.2.1b| | 16 |
| Nearside Rear Upper Shock absorber has an excessively worn bush |2.7.4| | 16 |
| Horn not working |1.6.2a| | 16 |
| Offside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 16 |
| Nearside Front Headlamp not working on main beam |1.7.5a| | 15 |
| Exhaust emits excessive smoke or vapour of any colour |7.4.B.4| | 15 |
| Offside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 15 |
| Offside Rear Stop lamp not working |1.2.1b| | 15 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 15 |
| Nearside Rear Service brake effort inadequate at a wheel (1.2.1 (a) (i)) | 15 |
| Offside Front Suspension arm has excessive play in a pin/bush |2.4.G.2| | 14 |
| Offside Rear Direction indicators incorrect colour |1.4.A.2f| | 14 |
| Nearside Track rod end ball joint has excessive play (2.1.3 (b) (i)) | 14 |
| Offside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 14 |
| Nearside Rear Direction indicator incorrect colour (4.4.3 (a)) | 14 |
| Offside Front Headlamp not working on main beam |1.7.5a| | 13 |
| All position lamps not working |1.1.A.3b| | 13 |
| Nearside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 13 |
| Offside Headlamp insecure |1.7.3| | 13 |
| Central Stop lamp(s) not working (4.3.1 (a) (ii)) | 13 |
| Nearside Rear Shock absorber has a serious fluid leak |2.7.3| | 12 |
| Nearside Rear Direction indicators incorrect colour |1.4.A.2f| | 12 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 12 |
| Upper Stop lamp not working |1.2.1b| | 12 |
| Offside Rear Suspension has inadequate clearance with the bump stop |2.4.A.1a| | 12 |
| Nearside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 12 |
| Offside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 12 |
| Nearside Front Headlamp insecure |1.7.3| | 11 |
| Nearside Front Lower Suspension arm has excessive play in a pin/bush |2.4.G.2| | 11 |
| Offside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 11 |
| Rear Stop lamp not working |1.2.1b| | 11 |
| Offside Front Position lamp not working |4.2.1 |a|| | 11 |
| Fuel cap/sealing device does not fasten securely maintaining the sealing arrangement |7.2.4b| | 11 |
| Rear rear brake recording little or no effort |3.7.B.5a| | 11 |
| Front brake excessively fluctuating | 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 Rear wheel bearing rough when rotated |2.6.1| | 11 |
| Nearside Headlamp excessively deteriorated so that the light output is severely reduced |1.7.5a| | 11 |
| Brake load sensing valve linkage obviously incorrectly adjusted |3.6.E.3| | 11 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 11 |
| Exhaust emissions exceed level of metered smoke for a turbo charged engine (8.2.2.2 (b)) | 11 |
| Anti-lock braking system warning lamp indicates an ABS fault | 10 |
| Nearside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 10 |
| Offside Front Shock absorbers has a serious fluid leak | 10 |
| Offside Headlamp excessively deteriorated so that the light output is severely reduced |1.7.5a| | 10 |
| Nearside Rear Suspension has inadequate clearance with the bump stop |2.4.A.1a| | 10 |
| Central Stop lamp not working |1.2.1b| | 10 |
| Nearside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 10 |
| Stop lamp remains on when the brakes are released | 10 |
| Offside Front Headlamp insecure |1.7.3| | 10 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 10 |
| Offside Front Track rod end ball joint has excessive play (2.1.3 (b) (i)) | 10 |