# US auto dealer pricing transparency regulations > Developing situation record from CLSTR: https://clstr.news/situations/us-auto-dealer-pricing-transparency-regulations > Updated: 2026-10-09T20:50:42.000Z. Sources: 5. Developments: 2. California has implemented the Combating Auto Retail Scams (CARS) Act to increase price transparency and curb deceptive practices in both new and used vehicle sales. The law requires dealers to disclose total advertised prices upfront and prohibits charging for add-on products that offer no meaningful benefit. For used vehicles priced at $50,000 or less, buyers are granted a three-day cancellation period, subject to mileage limits and a small restocking fee. These state-level changes coincide with new Federal Trade Commission (FTC) guidance requiring that advertised vehicle prices reflect the actual cost to the consumer, excluding only government-mandated charges. This mandate applies across all platforms, including dealer websites, social media, and direct communications. Dealers are reportedly facing technical challenges in complying with these requirements, as vehicle pricing data is often fragmented across disconnected inventory, marketing, and communication systems. Maintaining consistent, accurate, and all-inclusive pricing across all digital and physical channels remains a significant hurdle due to fluctuating market conditions and incentives. ## Timeline ### 2026-10-09: U.S. auto dealers face new pricing transparency requirements New FTC guidance and California law require U.S. auto dealers to ensure advertised vehicle prices reflect the total cost a consumer will actually pay across all marketing channels. 2 sources. https://clstr.news/cluster/us-auto-dealers-face-new-pricing-transparency-requirements ### 2026-09-30: California implements new consumer protections for auto sales California’s new CARS Act has taken effect, requiring dealers to provide upfront pricing transparency and offering a three-day cancellation period for used vehicle purchases under $50,000. 3 sources. https://clstr.news/cluster/california-cars-act-implements-new-used-car-buyer-protections --- Cite as: US auto dealer pricing transparency regulations. CLSTR, https://clstr.news/situations/us-auto-dealer-pricing-transparency-regulations