| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 21 |
| Parking brake: efficiency below requirements |3.7.B.7| | 19 |
| Parking brake lever has no reserve travel |3.1.6b| | 14 |
| Rear parking brake recording little or no effort | 12 |
| Parking brake: efficiency below requirements |3.7.C.1b| | 11 |
| Offside Steering rack gaiter split |2.2.D.2d| | 10 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 8 |
| Windscreen wiper does not clear the windscreen effectively | 6 |
| Nearside rear brake recording little or no effort |3.7.B.5a| | 6 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 6 |
| Offside Rear wheel bearing rough when rotated |2.6.1| | 5 |
| Offside Front Steering rack gaiter split |2.2.D.2d| | 5 |
| Offside rear brake recording little or no effort |3.7.B.5a| | 5 |
| Nearside Steering rack gaiter split |2.2.D.2d| | 5 |
| Service brake: efficiency below requirements |3.7.B.7| | 5 |
| Service brake: efficiency below requirements |3.7.C.1a| | 4 |
| Nearside Front Steering rack gaiter split |2.2.D.2d| | 4 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 3 |
| Brakes imbalanced across an axle | 3 |
| Brake pipe excessively corroded | 3 |
| Rear fog lamp not working |1.3.2b| | 2 |
| Rear fog lamp tell tale not working |1.3.1b| | 2 |
| Nearside Front Direction indicator incorrect colour |1.4.A.2f| | 2 |
| Offside Front Direction indicator incorrect colour |1.4.A.2f| | 2 |
| Nearside Stop lamp not working |1.2.1b| | 2 |
| Offside Front Suspension arm ball joint excessively worn |5.3.4 |a| |i|| | 2 |
| Battery insecure |1.9.1| | 2 |
| Service brake efficiency below requirements (1.2.2 (a) (i)) | 2 |
| Service brake efficiency below requirements |1.2.2 |a| |i|| | 2 |
| Offside Track rod end ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.2.C.1c| | 2 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 2 |
| Nearside Rear Rear wheel bearing rough when rotated |2.6.1| | 2 |
| Nearside Front Suspension arm ball joint excessively worn |5.3.4 |a| |i|| | 2 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 2 |
| Registration plate issues | 2 |
| Steering system excessively rough |2.2.D.1| | 1 |
| Nearside Front Front drive shaft coupling is excessively worn |2.5.C.1c| | 1 |
| Offside Front Front drive shaft coupling is excessively worn |2.5.C.1c| | 1 |
| Offside Rear Suspension arm corroded and seriously weakened |2.4.G.1| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Offside Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 1 |
| Nearside front brake binding |3.7.B.1| | 1 |
| Nearside Rear Trailing arm corroded and seriously weakened |2.4.G.1| | 1 |
| Offside Rear Trailing arm corroded and seriously weakened |2.4.G.1| | 1 |
| Offside Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Front Sub-frame corroded and seriously weakened |5.3.3 |b| |i|| | 1 |
| Hydraulic brake cylinder leaking hydraulic fluid master cylinder |3.6.A.1| | 1 |
| Offside Stop lamp not working |1.2.1b| | 1 |
| Front brake excessively fluctuating | 1 |
| Rear Trikes, quads or pre-68 vehicles, service brake efficiency below requirements |3.7.B.7| | 1 |
| Parking brake efficiency below requirements |3.7.B.7| | 1 |
| Nearside Rear Service brake efficiency below requirements low reading (1.2.2 (a) (i)) | 1 |
| Nearside Rear Parking brake efficiency below requirements low reading (1.4.2 (a) (i)) | 1 |
| Fuel system component leaking valve in front of tank (6.1.3 (b) (i)) | 1 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 1 |
| Bonnet cannot be secured in the closed position (3.1 (b) (i)) | 1 |
| Bonnet seriously at risk of opening inadvertently (3.1 (b) (ii)) | 1 |
| Nearside Rear Service brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Offside Rear Service brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c)) | 1 |
| Parking brake efficiency less than 50% of the required value |1.4.2 |a| |ii|| | 1 |
| Parking brake efficiency below requirements low effort at both rear wheels |1.4.2 |a| |i|| | 1 |
| Nearside Rear Service brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Offside Rear Service brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Nearside Front Braking system leaking |3.6.A.1| | 1 |
| Brake hose excessively deteriorated | 1 |
| Brake hose damaged | 1 |
| Nearside Front constant velocity joint gaiter split |2.5.C.1a| | 1 |
| Rear brake binding | 1 |
| IMPORTANT. Do not use. All tricycles and quadricycles are exempt from emissions testing. |9.7| | 1 |
| Front Windscreen wiper not operating automatically when switched on |8.2.1b| | 1 |
| Nearside Front wheel bearing has excessive play |2.5.A.3c| | 1 |
| Offside Rear fog lamp not working |1.3.2b| | 1 |
| Rear rear brake grabbing severely |3.7.A.5b| | 1 |
| Emissions not tested |7.0| | 1 |
| Offside Front Subframe mounting prescribed area is excessively corroded |2.4.A.3| | 1 |
| Offside Rear Axle beam cracked |2.5.A.5a| | 1 |
| Nearside Rear wheel bearing rough when rotated |2.6.1| | 1 |
| Offside Rear fog lamp not working (4.5.1 (a) (ii)) | 1 |
| Offside Rear Inner Brake disc in such a condition that it is seriously weakened (1.1.14 (a) (ii)) | 1 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 1 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds default limits (8.2.1.2 (b)) | 1 |
| Exhaust hydrocarbon content after 2nd fast idle exceeds manufacturers specified limits (8.2.1.2 (a)) | 1 |
| Bonnet cannot be secured in the closed position |3.1 |b| |i|| | 1 |
| Offside Brake cable insecure Parking brake cable |3.5.1d| | 1 |
| Nearside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 1 |
| Nearside Side repeater missing |1.4.A.2b| | 1 |
| Offside Side repeater missing |1.4.A.2b| | 1 |
| Offside Rear Brake cable has wires broken and is significantly weakened |3.5.1b| | 1 |
| Offside Front Headlamp insecure |1.7.3| | 1 |
| Offside Rear wheel bearing has excessive play |2.6.2| | 1 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 1 |
| Offside Rear Direction indicator incorrect colour |1.4.A.2f| | 1 |
| Offside Front Brake pedal anti-slip provision missing |3.3.A.1b| | 1 |
| Nearside Rear Passenger`s seat insecure |6.2.A.1| | 1 |
| Offside Rear Passenger`s seat insecure |6.2.A.1| | 1 |
| Brake hose has insufficient room to move | 1 |
| Offside Rear Rear wheel bearing rough when rotated |2.6.1| | 1 |
| Nearside Front Rear wheel bearing has excessive play |2.6.2| | 1 |
| Nearside Front Track rod end ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.2.C.1c| | 1 |
| Rear Exhaust has part of the system excessively deteriorated |7.1.1a| | 1 |
| Offside Headlamp not working on main beam |1.7.5a| | 1 |
| Emissions not tested due to blow |8.2.1.2 |d|| | 1 |
| Fuel system component insecure |7.2.1| | 1 |
| Parking brake lever insecure |3.1.3b| | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Parking brake inoperative on one side (1.4.1 (a)) | 1 |
| Exhaust carbon monoxide content at idle exceeds default limits (8.2.1.2 (b)) | 1 |
| Horn not working |1.6.2a| | 1 |
| Nearside Headlamp insecure |1.7.3| | 1 |
| Offside Obligatory mirror missing |8.1.1| | 1 |
| Tailgate cannot be secured in the closed position |6.4.1| | 1 |
| Nearside Front brake disc excessively pitted |3.5.1h| | 1 |
| Offside Front brake disc excessively pitted |3.5.1h| | 1 |
| Nearside Rear brake disc excessively pitted |3.5.1h| | 1 |
| Offside Rear brake disc excessively pitted |3.5.1h| | 1 |
| Fuel system component leaking Fuel rail pipe connector |7.2.3| | 1 |
| Nearside Rear Brake pipe inadequately supported |3.6.B.1| | 1 |
| Offside Rear Brake pipe inadequately supported |3.6.B.1| | 1 |
| Steering column top bearing excessively worn |2.2.2 |b|| | 1 |
| Rear Parking brake inoperative on one side |1.4.1 |a|| | 1 |
| Front Sub-frame corroded and seriously weakened (5.3.3 (b) (i)) | 1 |
| Offside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 1 |
| Exhaust emissions likely to be affected by an exhaust leak (8.2.1.1 (b)) | 1 |
| 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)) | 1 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Nearside Track rod end ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.2.C.1c| | 1 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 1 |
| rear brake recording little or no effort |3.7.B.5a| | 1 |
| Steering column has excessive movement up and down (2.2.2 (a)) | 1 |
| Brake master cylinder leaking leaking in car by pedal (1.1.10 (b) (ii)) | 1 |
| Central Front Braking system leaking brake master cylinder leaking |3.6.A.1| | 1 |
| Offside Front Front constant velocity joint gaiter deteriorated to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 1 |