Car dealerships were exempt from SB 478.

However, California's CARS Act, which took effect July 1, 2025, prohibits misrepresentations about the costs or terms of purchasing, financing, or leasing a vehicle, including the availability of vehicles at an advertised price.

Dealers should be required to list the title/plate fees and their processing fee but stuff like dealer options and markup are required to be on a seperate sticker.

America has such an aversion to including taxes on a listed price so I doubt that will ever be included.