Guide
The Magnuson-Moss Warranty Act (15 U.S.C. §§2301–2312) is the federal floor under every state lemon law on this site. It does not define a lemon. It says: if a warranted product cannot be conformed to its warranty after a reasonable opportunity, the consumer may sue for damages, refund, or replacement — and a prevailing consumer recovers attorney's fees (§2310(d)(2)), which is why lemon lawyers can take these cases without charging you up front.
Where it matters most: used cars with a written warranty; motorcycles, RVs and other classes your state excludes; vehicles whose state presumption window has closed; and Texas, where the lemon subchapter has no fee provision and lawyers plead around it. It also powers the Part 703 informal dispute programs (16 CFR Part 703) that many states make a mandatory first step.
Magnuson-Moss has no checker because it has no fixed numbers — 'reasonable number of attempts' is argued, not computed. What wins those arguments is the same dated repair log the state checker runs on. Build the log either way.
The repair-log tracker, your state's notice letter, the buyback worksheet, and your deadline calendar.
Information, not legal advice. Checked October 23, 2026.