Window Tint Laws in SA (2026): Legal VLT Limits

South Australia treats the windows in front of the driver differently to the ones behind. That is the single most useful thing to understand before you book a job. The front side glass has to stay reasonably clear so police and other drivers can see in, while the back half of the car can run much darker.

These rules sit in the Road Traffic (Light Vehicle Standards) Rules 2018 and apply to vehicles with a Gross Vehicle Mass of 4.5 tonne or less, which covers the vast majority of cars, utes and vans on SA roads.

The driver and front passenger windows are the ones police look at first. Factory glass on these windows already sits at around 70% VLT before any film goes on. You are allowed to add film that brings them down to no less than 35% VLT.

So 35% is the darkest legal point for your front doors. Anything below that, and the car is not compliant. This is where a lot of drivers get caught out, because a film sold as "35%" applied over factory glass does not give you a 35% result overall. See the tip further down.

Behind the driver's seat, you get more room to move. On a normal passenger vehicle, the rear side windows and the rear windscreen can be coated down to 20% VLT. That is noticeably darker than the front and is why so many cars have a clear difference between the front doors and the back.

Goods vehicles and privacy glass

Goods vehicles such as panel vans and single-cab utes get an exemption. If the vehicle has a mirror fitted on each side, the windows behind the driver can go all the way to 0% VLT. This is because the driver relies on the side mirrors rather than seeing through the rear.

If your car came from the factory with dark 'privacy glass' already below 20%, that is legal only because the manufacturer fitted it. You cannot add more film on top of factory privacy glass.

The windscreen is the most tightly controlled piece of glass. For a motor vehicle built after 1971, the windscreen must let through at least 75% of light. For any other (older) vehicle, the minimum is 70%. The glass must not be coated in a way that reduces that transmittance.

There is one exception: a tint band along the top. You may coat the greater of the upper 10% of the windscreen (or the area the manufacturer originally 'masked'), or the area above the highest point swept by a wiper. That band must not cover any sensors or cameras built into the top of the glass, which matters more each year as driver-assist systems become standard.

South Australia limits how reflective your tint can be. The maximum allowed reflectance is 10%. That rules out the heavy mirror or chrome-look finishes you sometimes see on imports. A film can be dark and still legal, but it cannot throw back a mirror-like reflection above that limit.

Our directory lists 66 window tinting businesses across South Australia, so it pays to ring a couple and confirm they measure the finished glass before you commit.

These rules are set and enforced by the Department for Infrastructure and Transport (DIT) under the Road Traffic (Light Vehicle Standards) Rules 2018. You can read the current details on the SA Government website at sa.gov.au under driving and transport, vehicle standards and modifications, window tinting.