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Legal explainer · 2026-05-18

How long do you have to bring a lemon law claim?

Lemon-law and MMWA statutes of limitations vary by state and by claim type. Missing the deadline means losing the case before it starts. Here's the framework for figuring out your window.

Calendar and document close-up — lemon-law and MMWA statutes of limitations vary by state and claim type, and missing the deadline forfeits the case

Why this matters more than most consumers realize

We turn down cases every month where the facts would have supported a strong claim — if the consumer had called six months earlier. Statutes of limitations are not negotiable. Once the deadline passes, the case is over, regardless of how clear the defect is or how badly the manufacturer behaved.

The complication: there is no single statute of limitations for lemon-law cases. Different claims have different windows, and the windows can be triggered by different events. Consumers often assume the clock starts when the defect appears, but in many states, it actually starts earlier.

Federal MMWA: four years (usually)

The Magnuson-Moss Warranty Act doesn't contain its own statute of limitations. Federal courts apply the statute of limitations of the underlying state warranty law. In most states, this means the four-year statute of limitations under UCC § 2-725, which governs breach-of-warranty claims.

Under UCC § 2-725, the four-year clock generally starts at the time of vehicle delivery, not at the time the defect appears. There is an exception for warranties that "explicitly extend to future performance" — but courts interpret that exception narrowly, and most express manufacturer warranties don't qualify.

Practical takeaway: you generally have four years from the date you took delivery of the vehicle to bring an MMWA claim. Defects discovered in year five are usually too late.

State lemon law: varies dramatically

State lemon laws have their own statutes of limitations, and they are often shorter and stricter than the federal MMWA window.

How to figure out your window

Three dates determine your statute-of-limitations exposure:

  1. Vehicle delivery date. The date you took possession of the vehicle. For used vehicles, this is the date you took possession from the seller (not the date the original owner took delivery from the manufacturer).
  2. First repair attempt date. The date of the first documented repair attempt on the defect at issue. This date is important for state lemon-law presumptions but generally doesn't restart the federal MMWA clock.
  3. Current date. Where you are now in relation to the above two dates.

If you're past the four-year mark from delivery, federal MMWA is generally unavailable. If you're past your state's lemon-law presumption window but within four years of delivery, MMWA may still be viable.

Don't wait until the deadline approaches

Building a case takes time. Demand letters need to be drafted, evidence needs to be organized, and the manufacturer needs an opportunity to respond. We recommend opening matters at least six months before the outside statute of limitations to give the case room to develop.

If you're unsure of your window, take our case quiz. We will tell you on the intake call whether your statute of limitations has expired and, if so, whether any other claims remain viable.

Take the case eligibility quiz

A few questions on your vehicle, repairs, and warranty. Free. We tell you on the call whether the facts support a real claim.

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