California CARS Act Dealer Compliance: What Used-Car Dealers Need Ready by October 2026

California's CARS Act—short for Combating Auto Retail Scams—goes live October 1, 2026. If you're selling used cars in California, this is the biggest change to the sale process since the Car Buyer's Bill of Rights twenty years ago. The law reshapes how you advertise prices, what add-ons you can sell, and gives customers a three-day window to return most used vehicles. Here's what you need to know and what to have ready before the deadline.

Who the Law Covers

SB-766 applies to licensed dealers selling light-duty vehicles with a GVWR under 10,000 pounds. That covers essentially every passenger car and light truck on your lot.

You're exempt from the law's requirements for wholesale deals, fleet sales where you sell more than one vehicle in a single transaction, and sales to commercial buyers who purchase five or more vehicles from you per year. Everything else—your typical retail customer buying one car—falls under the new rules.

The Three-Day Return Window

Starting October 1, every used vehicle you sell or lease for $50,000 or less comes with a mandatory three-day right to cancel. The customer can walk the deal back for any reason, no questions asked.

The clock starts ticking from the day you execute the sale agreement. If you deliver a car on Monday, the cancellation period ends at your close of business on Thursday—three full calendar days. The customer can't return the car if they've driven it more than 400 miles between signing and attempting to cancel.

Restocking fees: You can charge 1.5% of the sale price, with a floor of $200 and a ceiling of $600. If the customer puts more than 250 miles on the car during those three days, you can charge an additional dollar per mile over 250, up to a maximum of $150 on top of the base restocking fee.

Refund timeline: You have 48 hours from the moment the customer exercises the right to cancel to tear up the contract and issue a full refund, minus any restocking fees you're entitled to collect.

Forms and signage: You'll need to provide the state-required three-day cancellation disclosure to the customer at the time of sale, and post the DMV's required cancellation-right notice in every sales office, cubicle where you discuss deal terms, and room where you regularly sign contracts. The notice makes clear that California has no general cooling-off period for vehicle sales, but that a used vehicle purchased or leased for $50,000 or less can be cancelled within three days for any reason, subject to conditions and a possible restocking fee. Use the exact form title, wording, and sign format the California DMV publishes for SB-766 — confirm the current official specifications with the DMV before you print anything, since the mandated language and type size are set by the state.

This is a lot to coordinate. You need a process for tracking mileage at delivery and return, a standard refund procedure that hits the 48-hour deadline, and a way to reverse financing and return trade-ins without delay. If you're using dealer management software, make sure it can log these cancellations and track the associated timelines—this is exactly the kind of workflow a tool like DealerVLO's used-car dealer software is built to handle.

Total Price Advertising

The CARS Act kills the old practice of advertising a teaser price and layering on charges later. Now, every ad for a specific vehicle must show the "total price"—which includes the vehicle's sales price, any dealer price adjustment, destination charges, and the cost of anything installed on the car at the time you run the ad.

You can exclude government fees like tax, title, and license. You cannot deduct rebates to make the advertised number look smaller. And you cannot substitute MSRP for your actual total price. MSRP is the manufacturer's suggestion; the law requires your number.

This total price requirement applies to every advertisement and to the first written communication you send a customer about a specific vehicle. If a customer emails you asking about a car, your reply must include the total price. Keep those written communications on file for two years, and provide them to the customer on request.

Within 48 hours after you sell a vehicle, you must pull the listing from your website. No more letting sold inventory sit online.

Prohibited Add-On Products

The law makes it illegal to charge for any add-on product or service that wouldn't benefit the customer. The statute gives a non-exhaustive list of examples, and they're specific:

• Nitrogen tire fills with less than 95% purity
• GAP agreements that don't comply with California law
• Service contracts that are void due to pre-existing conditions like prior crash damage, flood damage, or mechanical issues
• Oil changes for electric vehicles
• Catalytic converter etch markings for vehicles that don't have a catalytic converter
• Surface protection products that void the manufacturer's paint warranty

The law clarifies that a customer still "benefits" from a product even if they never file a claim or later decline coverage. The prohibition is about selling something objectively useless—oil changes to an EV owner, not a warranty that turns out to go unused.

Before October 1, audit your F&I menu. If you're offering nitrogen fills, confirm your supplier delivers at least 95% purity and document it. If you're selling service contracts, verify you're not writing coverage on vehicles with pre-existing damage that would void the contract. If you're offering products tied to parts the car doesn't have, pull them.

Prohibited Misrepresentations

SB-766 bans a long list of misrepresentations, most of which should already be off-limits under existing law but are now codified with teeth. You can't misrepresent:

• Costs or terms of purchasing, financing, or leasing
• Costs, limits, or benefits of add-on products
• Whether the contract is a lease or a purchase
• Whether vehicles are actually available at the advertised price
• Pre-approvals or guarantees for financing or products
• Information on credit applications
• Whether you'll keep a deposit or trade-in if the customer doesn't complete the deal
• Your dealership's affiliation with or approval by any government entity
• Circumstances of repossession
• The customer's ability to move the vehicle out of state or out of the country

Most of this is straightforward. Don't lie, don't bait-and-switch, don't mislead customers about what they're signing. The enforcement risk under the CARS Act is high enough that sloppy sales practices or vague contract language are now material compliance problems, not just customer service issues.

Records Retention

The CARS Act adds a two-year retention requirement for any record that demonstrates your compliance. That includes:

• Advertisements and written communications showing total price
• Purchase orders, financing and lease documents signed by customers
• Written correspondence between you and the buyer
• Documentation that any add-on you sold provides a benefit to the customer (service contracts, GAP agreements, product specifications)
• Copies of all cancellation requests, proof of refunds, and proof that trade-ins were returned
• Copies of written complaints from buyers or lessees

This is on top of California's existing three-year DMV deal jacket requirement and the seven-year retention rule under the Automobile Sales Finance Act. In practice, keep everything for at least seven years, but make sure the CARS Act–specific items are easy to retrieve if the DMV or a plaintiff's attorney comes asking.

Enforcement and Penalties

SB-766 doesn't create an explicit private right of action, but plaintiff's attorneys are already working the angles under existing consumer protection statutes. Expect lawsuits under the Unfair Competition Law, Consumer Legal Remedies Act, and False Advertising Law to cite CARS Act violations as evidence. The DMV can also investigate and penalize dealers directly.

The stakes are real. A pattern of non-compliance—failing to provide the three-day cancellation right, running ads without total price, or selling useless add-ons—can result in license suspension, civil penalties, and class-action exposure.

Compliance Checklist

Here's what to have in place by October 1, 2026:

Forms and disclosures:

• New "3-Day Right to Cancel Used Car Purchase or Lease" disclosure form, printed and ready to include in every deal packet for used vehicles ≤ $50,000

Signage:

• 36-point signs posted in every sales office, cubicle, and contract-signing room with the mandatory cancellation notice language

Advertising:

• Updated templates for print, online, and email ads showing total price (not MSRP, not base price + fees)
• Process to remove sold listings from your website within 48 hours of sale

F&I menu:

• Audit all add-on products for compliance (nitrogen purity, service contract terms, product applicability)
• Remove or replace any product on the prohibited list
• Document that remaining products provide genuine benefit

Sales process:

• Written procedure for handling three-day cancellations, including mileage verification, refund calculation, and 48-hour refund timeline
• Training for sales and F&I staff on prohibited misrepresentations

Records:

• System to retain all advertisements, written communications, cancellation requests, and compliance documentation for at least two years
• Tag or flag CARS Act records for easy retrieval

Technology:

• Confirm your DMS or CRM can track three-day cancellation windows, log mileage, calculate restocking fees, and timestamp refunds

Bottom Line

The California CARS Act is not a cosmetic change. It forces transparency in pricing, limits your ability to sell certain add-ons, and gives customers a return window on most used cars. The October 1 deadline is firm, and enforcement will be active from day one.

If you haven't started preparing, start now. Update your forms, audit your F&I products, retrain your team, and build processes to handle cancellations cleanly. The law is designed to catch dealers who cut corners, and the penalties for non-compliance are steep enough that hoping for leniency isn't a strategy.