What Major defect (MOT) means for you
A major defect means the car fails its MOT but isn't classed as dangerous. Only dangerous and major faults cause a fail; minor faults are recorded and advisories are warnings. Tyres need at least 1.6mm of tread, and brake pads fail below 1.5mm.
Ask for the MOT certificate and check the history before buying. The free GetFreeCarCheck report shows MOT records back to 2005, so you can spot repeat failures. Driving without a valid MOT can bring a fine of up to £1,000, unless you're heading to a booked test or to repairs.