That tiny FMVSS label isn’t decoration; it declares “Passenger Car” or “MPV/Truck.” Passenger? Every side window must keep 70 percent visible light. MPV? Only the windshield and front doors stay bright; anything behind the B-pillar may go limo-dark if both mirrors work. Even crossovers sold as SUVs sometimes wear a Passenger tag, so check before you tint or pay twice—once to peel illegal film and again for re-inspection. Visit : https://autorepairshopz.blogspot.com/2025/07/when-seventy-percent-means-zero.html