Signing a bill of sale marked “as is” feels like signing away every legal protection a car buyer has — but the Federal Trade Commission’s Used Car Rule, in force since 1985, still requires every used car dealer in the country to disclose specific warranty information before that sale ever happens, and several states go further and block “as is” sales outright. The rule, codified at 16 CFR Part 455, forces dealers to post a window sticker called the Buyers Guide on every used vehicle for sale, spelling out whether a warranty applies and, if one does, exactly what it covers. “As is” does not erase that requirement. It just changes what the sticker says.

What the Buyers Guide actually has to say

Per the FTC’s own Used Car Rule guidance, the Buyers Guide sticker is mandatory on essentially every used vehicle a dealer offers for sale, and it has to disclose whether the car comes with a warranty and, if so, the specific systems covered, the duration of coverage, and what percentage of repair costs the dealer will pay. Dealers who mark a vehicle “as is” are still required to display this sticker — they simply check the box disclosing that no warranty is offered rather than describing one. The disclosure requirement doesn’t disappear because the sale is “as is”; it just discloses the absence of a warranty instead of its terms. Removing or altering the sticker before the sale closes, or selling a car with terms that contradict what the sticker says, is itself a rule violation the FTC can act on.

States that don’t allow “as is” at all

The rule was built with an explicit carve-out for states that restrict or ban “as is” sales altogether. As the FTC’s own guidance states, “in states that do not permit sales of used cars ‘as is,’ or without warranties, dealers must display an alternative version of the Buyers Guide” — meaning the federal rule defers to whatever protection state law layers on top. In those states, a dealer cannot use the words “as is” to override an implied warranty of merchantability that state law attaches to the sale automatically. That implied warranty is a separate, state-level protection from anything the FTC requires — it exists under state contract and commercial law regardless of what a bill of sale says, and in states that restrict “as is” disclaimers, no sticker language or signed waiver can erase it.

What “as is” genuinely does and does not waive

• It waives dealer-provided repair obligations tied to a warranty the dealer never offered in the first place — if the sticker says no warranty, the dealer generally isn’t on the hook for repairs discovered after the sale under that specific promise.
• It does not waive the Buyers Guide disclosure itself — the dealer still has to post it, still has to check the accurate box, and still faces FTC exposure for skipping or falsifying it.
• It does not automatically override implied warranties in states where consumer protection law restricts “as is” disclaimers — the FTC rule explicitly acknowledges this state-by-state variation rather than preempting it.
• It does not cover fraud or misrepresentation — a dealer who conceals a known safety defect or lies about a car’s condition on the Buyers Guide or verbally is exposed regardless of what the sales contract says, because “as is” only disclaims warranty coverage, not honesty about the vehicle’s actual condition.

Private-party sales are a different story

The Used Car Rule only binds dealers — businesses that sell more than five used vehicles in a 12-month period. A private individual selling their own car directly to a buyer is not covered by 16 CFR Part 455 at all, which means no Buyers Guide sticker is required and the federal disclosure floor simply does not apply. That gap is exactly why state-level implied warranty protections matter more, not less, in a private sale: without the federal sticker requirement acting as a backstop, whatever protection a buyer has comes entirely from state contract law, and in states without strong implied-warranty statutes, a private “as is” sale can leave a buyer with very little recourse if the car fails days after the handshake.

What to actually check before signing

Before signing anything marked “as is” at a dealership, check that a Buyers Guide sticker was actually posted on the vehicle and that its warranty box matches what the salesperson told you verbally — a mismatch is a rule violation worth reporting to the FTC. Then check whether your state restricts “as is” sales or preserves an implied warranty of merchantability regardless of the sticker’s language; state attorney general consumer-protection pages typically spell this out directly, and the answer changes what “as is” is actually allowed to waive. Buying from a private seller instead of a dealer changes the calculus further, since the federal sticker requirement disappears entirely and state law becomes the only backstop. “As is” limits what a dealer promised. It was never designed to erase what federal disclosure law, and in a meaningful number of states, state warranty law, still require.