What's the minimum light transmittance for front windows?

The windshield and front side windows require at least 70% light transmittance. Rear windows and rear side windows can be darker.

Does the tint film need any homologation?

The film should comply with UNECE Regulation No. 43 on safety glazing. It's worth having proof of light transmittance from the film supplier on hand during a check.

Do the rules differ for rear windows?

Yes. The 70% transmittance limit doesn't apply to rear side windows and the rear window, provided the vehicle has functioning exterior mirrors on both sides.

Window tinting on a Škoda Octavia — what's legal

Window tinting is a popular modification, but Czechia sets fixed light-transmittance limits for it — especially for windows in the driver's direct field of view.

Transmittance limits

The windshield and front side windows (driver's and passenger's) require at least 70% light transmittance. This limit ensures adequate visibility in low light and at night.

The 70% limit doesn't apply to rear side windows and the rear window — these can be darker, provided the vehicle has functioning exterior mirrors on both sides (which compensate for limited visibility through a tinted rear window).

Film homologation

The tint film used should comply with UNECE Regulation No. 43 on safety glazing. It's recommended to carry proof of light transmittance from the film supplier during a check — it makes any inspection by the Czech Police or at STK easier.

What's at risk if limits aren't met

Front windows darker than the allowed limit are grounds for failing inspection and can also lead to a penalty during a roadside check, since they limit the driver's visibility and the ability to identify people inside the vehicle.