The law requires you to keep several key parts of your car in good condition to ensure safety and legal compliance. These parts include:

• Seat belts: They must be in good working order, as they are crucial for passenger safety and are legally required to be maintained.

• Tyres: Must have a minimum tread depth of 1.6mm and be free from damage to ensure grip and safety.

• Brakes: The braking system must be fully functional at all times to prevent accidents and meet legal standards.

• Lights and indicators: All lights must work properly for visibility and signaling intentions to other road users.

• Windscreen and wipers: The windscreen must be free from large cracks that impair vision, and wipers must be functional to maintain clear visibility.

• Other parts commonly checked include mirrors, exhaust/emissions systems, and bodywork related to safety.

These requirements are typically enforced through regular vehicle inspections (such as MOT or Periodic Technical Inspection), where failure to meet standards can result in fines or prohibition from driving.

In summary, the law mandates that critical safety-related car parts—particularly seat belts, tyres, brakes, lights, and windscreen components—must be kept in good condition at all times for safe and lawful driving.