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Last Modified
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Sep 28, 2026
Navigating motor vehicle pricing, financing terms, and contract paperwork can be confusing, especially when unexpected costs appear in an agreement.
Starting October 1, 2026, California’s CARS Act (Senate Bill 766) takes effect to increase transparency at the dealership. The law requires dealers to clearly disclose full pricing upfront, detail optional add-ons in writing, and prohibit unagreed-upon charges.
At Lemon Law Pro, we work to protect your rights when a vehicle suffers from unaddressed defects. Learn more about how the lemon law works in California.
What the CARS Act Changes
The California Combating Auto Retail Scams Act targets the sales process itself. Dealers can no longer advertise one number and charge another once you’re sitting at the finance desk. Any product added to the deal, from a service contract to a theft-deterrent sticker, has to be priced separately and clearly marked optional.
Add-On Rules Worth Knowing
Under the new law, dealers must:
- State in writing that an add-on isn’t required
- List its price apart from the vehicle’s total price
- Pay third-party providers within 10 days of the sale
Used vehicles priced at $50,000 or less get a new 3-day right to cancel. The 400-mile limit isn’t about how many miles were already on the car, it’s a cap on how far *you* can drive it during those three days. Drive it more than 400 miles after you sign, and you lose the right to cancel.
For more information about the rules surrounding vehicle returns, see California’s used car return law.
What Happens If You Already Own a Lemon?
Most guides stop at the sale. But the CARS Act and California’s lemon law solve two separate problems, and knowing which one applies matters. If your dealer misrepresented the price, that’s SB 766.
If your transmission keeps failing under warranty and the manufacturer can’t fix it after a reasonable number of tries, you may qualify for a buyback or replacement under the Song-Beverly Consumer Warranty Act. California law creates a legal presumption in your favor once there have been four repair attempts for the same problem (or two, if it’s a safety defect), or the car has been in the shop 30 days or more, but a manufacturer can still push back, and fewer attempts can sometimes qualify too, depending on the facts. Learn more about reasonable repair attempts under California lemon law and how a car qualifies for lemon law in California.
Frequently Asked Questions
Does the CARS Act help if my car keeps breaking down?
Not directly, since SB 766 covers the sale, not the vehicle’s performance. You’ll want the Song-Beverly Act for repeated mechanical failures in California.
What if my used car return window already passed?
The 3-day cancellation right only applies right after purchase. Past that, your options shift toward warranty claims or a lemon law review of the vehicle itself.
Lemon Law Pro: Your California Lemon Law Firm
Whether you are researching unexpected contract fees or dealing with an unaddressed vehicle defect, navigating auto dealer and manufacturer policies can be complex.
Automakers and dealerships have teams protecting their interests: contact our team today to ensure your rights as a consumer are fully understood and protected. Learn more about what a California lemon law attorney does.
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