The rules for tinted front windscreens and front side windows depend on when the vehicle was first used. There are no rules for tinting the rear windscreen or rear passenger windows.
The front windscreen must let at least 75% of light through and the front side windows must let at least 70% of light through.
The front windscreen and front side windows must both let at least 70% of light through.
It’s illegal to fit or sell glass (or a vehicle already fitted with glass) that breaks the rules on tinted windows.
The police or the Driver and Vehicle Standards Agency (DVSA) vehicle examiners use light measuring equipment to measure window tint.
If your windscreen or front side windows are tinted too much you could get:
Tinted windows are not part of the MOT test.
Don’t include personal or financial information like your National Insurance number or credit card details.