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Montana · Article Updated May 26, 2026

How Long Do I Have to File a Montana Lemon Law Claim?

Montana's deadlines — the 2-year/18,000-mile warranty period (and the mileage trap), in-state arbitration, and the CPA and Magnuson-Moss clocks.

Montana’s lemon law is built around the warranty period2 years or 18,000 miles, whichever is earlier. In a high-mileage state, the 18,000-mile cap usually controls. See the full statute of limitations guide.

The clocks

ClaimPeriodRuns from
Lemon Law warranty period2 years or 18,000 miles, whichever earlierOriginal delivery
ArbitrationHeld in Montana; de novo if IDS nonconformingAfter notice / IDS
Montana CPAMontana general limitationsAccrual
Magnuson-Moss4 yearsTender of delivery

The 18,000-mile trap

The defect history and presumption must arise within the 2-year / 18,000-mile warranty period — and because Montana has some of the longest driving distances in the country, a rural commuter or rancher can pass 18,000 miles in well under two years. Build the record and give written notice before the odometer closes the window.

In-state arbitration

Arbitration must be held in Montana (§ 61-4-515) — a certified IDS or the Department of Justice program, with arbitration de novo if an IDS was nonconforming (§ 61-4-520).

When the CPA and Magnuson-Moss matter

The Montana CPA runs on Montana’s general limitations, and Magnuson-Moss 4 years from delivery — both can outlast the lemon-law warranty window and (importantly) carry the attorney fees the lemon law lacks.

Bottom line

Build the lemon-law record and give written notice within the 2-year / 18,000-mile warranty period — and watch the mileage cap, which closes fast. The CPA and Magnuson-Moss (4 years) are the longer fallbacks and the fee engines. Get a free case review.

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