Here's how dark your windows can legally be on a passenger car in Utah. VLT (Visible Light Transmission) is the percentage of light that must pass through the glass - lower VLT = darker tint.
| Windshield | Non-reflective tint above the AS-1 line |
| Front side windows | 35% VLT or lighter |
| Back side windows | Any darkness |
| Rear window | Any darkness |
| Medical exemption | Available for qualifying conditions |
A shop in Utah can legally install any film that meets these limits - and a good shop will refuse to go darker on the regulated windows, because the ticket lands on you, not them. If you want maximum heat rejection while staying legal, ask about ceramic film: it blocks far more heat than dyed film at the same legal darkness.
Rules shown are the commonly published limits for passenger cars, last reviewed July 2026. SUVs, vans, and trucks often have different (usually looser) rear-window rules, and legislatures do amend tint statutes - confirm with the Utah DMV or current statute before installing.
Get free quotes from window tinting businesses near you. They'll know these limits inside out.
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