Missouri Used Car Lemon Law: What RSMo 407.560 Covers and What Protects You

If the used car you just bought in Missouri is already falling apart, the lemon law almost certainly isn't what gets your money back. It only reaches cars that were new when first sold, and only for problems reported within the factory warranty or the first year after the original delivery, whichever ends first. A later owner counts only if the car changed hands while that warranty was running. For a normal used car, your tools are the Merchandising Practices Act, the paperwork, and the checks you do before you pay.

I read Missouri's lemon law, sections 407.560 to 407.579, on the Revisor of Statutes site on Sunday, October 18, 2026, along with the Attorney General's consumer booklet and the Department of Revenue's April 2026 vehicle buying guide. I'm not a lawyer. If a deal has already gone wrong, call a Missouri consumer attorney or the AG's hotline at 800-392-8222.

What the lemon law covers, and how short the window is

The definitions section limits "new motor vehicle" to one transferred for the first time from a manufacturer or dealer, never titled or registered anywhere, and sold by a franchised dealer for that make. Demonstrators and lease-purchase vehicles count if a factory warranty came with the sale. Motorcycles, mopeds, off-road and commercial vehicles are out, and so is most of an RV, apart from the chassis, engine and powertrain. "Consumer" includes anyone the car is transferred to "during the duration of an express warranty," which is the only door a used-car buyer has.

Inside that door, the clock is short. A defect has to be reported during the warranty or within one year of the original delivery, whichever expires earlier. The presumption section says a reasonable number of attempts has been made when the same problem has been repaired four or more times and is still there, or the car has been out of service 30 or more working days. You then send the manufacturer written notice, and it gets ten calendar days at a dealer to fix it. If it can't, it replaces the car or refunds the price, less an allowance for your use.

The deadline to sue is the harsh bit. Section 407.573 says you must file within six months after the warranty expires or 18 months after the original delivery, whichever comes first. So on a car first delivered two years before you bought it, the window closed before you showed up. If the manufacturer runs a federally compliant dispute program, you have to use it before you can claim a refund or replacement.

A rule that can make you pay the manufacturer's lawyers

This one surprised me. Under section 407.577, a consumer who wins can recover reasonable attorney's fees. But if a court finds your claim was in bad faith, or your final recovery isn't at least ten percent more than a settlement the manufacturer offered before you sued, you can owe the manufacturer's costs and attorney's fees. Read any pre-suit offer carefully, with a lawyer. The Center for Auto Safety's Missouri page grades the law an F, with a total score of 6, ranked 47 of 51.

For everything else: as-is, no cooling-off, and the MMPA

The Attorney General's Know Your Rights booklet says "There is no state law allowing a buyer to return a car and get a full or partial refund," and lists "the Lemon Law protects you on all big-ticket purchases, including used cars" as a myth. It reminds you that dealers must post the FTC Buyers Guide, that most used cars are sold "as is," and that private sellers don't use the guide at all. Our as-is used car explainer covers what that box gives up, and our cooling-off myth post covers the return question nationally.

Where a dealer lied, the Merchandising Practices Act is the usual route. Section 407.025 lets someone who bought primarily for personal, family or household use, and lost money because of a practice the Act bans, sue for actual damages, and a court may add punitive damages and attorney's fees. You have to show you acted as a reasonable consumer would, and prove your damages with real numbers. Keep the ad, the texts, the Buyers Guide and the contract.

Missouri paperwork to check before you pay

The Department of Revenue's Form 5687, revised April 2026, says a used-car buyer must get a properly assigned title, with an odometer disclosure on model year 2011 and newer cars until they're 20 years old. A dealer without the title on hand can, if you agree, sign a delayed delivery agreement and deliver it within 30 days. You must apply for title within 30 days, or 60 under that agreement, or pay $25 per 30 days late, up to $200. A safety inspection is needed to get plates or a temporary permit unless the car is under eleven years old with fewer than 150,000 miles. The AG's line is simple: "No title, no deal." Our Missouri title transfer guide goes step by step, and our Missouri salvage and rebuilt title rules post covers branded cars.

Missouri gets hail, and a repaired hail car can look fine on a lot, as our Kansas and Missouri hail salvage post shows. Get an independent mechanic to put it on a lift, and search NMVTIS for brands from other states.

The AG booklet pegs a history search at "about $25." That number is stale. CarVins is a licensed CARFAX and AutoCheck reseller, not affiliated with either one or with Experian, and as of mid October 2026 a guest report is roughly $5.50, a member report about $4.50, and both brands together near $6.75, while retail is usually $39.99 to $44.99. Pricing moves, so go by what checkout shows.

Sources

• Revised Statutes of Missouri 407.560 and 407.571 (also 407.565, 407.567, 407.573, 407.575, 407.577, 407.025), read Oct. 18, 2026
• Missouri AG: Know Your Rights; Missouri DOR Form 5687
• Center for Auto Safety: Missouri; NMVTIS