Montana Lemon Law: What Qualifies and How to Get a Refund or Replacement (2026)

Montana’s lemon law, codified in MCA § 61-4-501 et seq., provides new vehicle buyers and demo car purchasers with strong protections against manufacturing defects. If your vehicle has a serious defect that substantially impairs its use, value, or safety, and that defect cannot be fixed after reasonable repair attempts, you have the right to demand a full refund or replacement vehicle. Montana’s law does not require mandatory arbitration before filing a claim, giving you flexibility and faster access to the legal system if needed.

This guide explains what qualifies as a lemon in Montana, how to document your claim, and the steps to pursue recovery.

Montana Lemon Law: Key Facts

What Qualifies as a Lemon in Montana

A vehicle qualifies as a lemon in Montana if:

• It has a defect that substantially impairs its use, value, or safety
• The defect is covered under the manufacturer’s warranty
• The defect occurs within 2 years of purchase or before 18,000 miles (whichever comes first)
• The defect cannot be repaired after a reasonable number of attempts
• The defect is not caused by abuse, misuse, or unauthorized modification

“Reasonable attempts” means:

• 4 or more repair attempts for the same defect, OR
• The vehicle is out of service for 30 cumulative days for warranty repairs

Montana’s 2-year/18,000-mile coverage window is generous compared to some states, providing substantial protection for new vehicle buyers. The law covers mechanical failures, electrical defects, transmission problems, safety issues, and design flaws.

How to Document Your Lemon Claim

Keep detailed records to build a strong lemon law case:

• Service records: Collect copies of all repair orders, work tickets, and invoices from the dealership
• Warranty documentation: Maintain your purchase agreement and manufacturer’s warranty booklet
• Defect timeline: Note when the problem first appeared and describe the exact symptoms
• Repair attempt log: For each service visit, record the date, mileage, description of work performed, and whether the defect was resolved
• Out-of-service days: Track the total number of days the vehicle was at the dealer for repairs
• Communication records: Save all emails and letters to the dealer or manufacturer
• Phone call documentation: Note the date, time, person spoken with, and summary of each call to the dealer or manufacturer
• Photos and videos: Document the defect if visible (warning lights, mechanical problems, etc.)
• Purchase documentation: Keep the bill of sale, title, and registration documents

How to File a Lemon Law Claim in Montana

Step 1 — Send Written Notice to the Manufacturer

Send a formal written notice to the vehicle manufacturer. Include:

• Your full name, address, and phone number
• Vehicle identification number (VIN), year, make, and model
• Date of purchase and current mileage
• Detailed description of the defect(s)
• Copies or references to all service records and repair dates
• Total number of repair attempts and days out of service
• Clear statement that repairs have been unsuccessful
• Request for refund or replacement
• Reasonable deadline for response (typically 10 business days)

Send via certified mail with return receipt requested to ensure the manufacturer receives your notice.

Step 2 — Manufacturer Communication and Optional Arbitration

After receiving your notice, the manufacturer may:

• Offer one final repair attempt
• Propose voluntary arbitration
• Refuse the claim

Montana arbitration is optional, not mandatory. You can:

• Accept the manufacturer’s offer for a final repair
• Request arbitration if the manufacturer proposes it
• Skip arbitration and proceed to litigation

If you choose arbitration, an arbitrator will review the evidence and determine whether the vehicle qualifies as a lemon.

Step 3 — File a Lawsuit

If the manufacturer refuses your claim or repairs continue to fail:

• File suit in District Court
• You can recover the full purchase price, sales tax, registration fees, and attorney fees if you prevail
• Cases involving safety defects may result in additional damages

Real Situations in Montana

Billings: A buyer purchased a 2024 Dodge Ram 1500 that developed transmission shuddering within the first month and 1,500 miles. After 4 repair attempts at the Dodge dealership over 90 days, the shuddering persisted during acceleration. The buyer sent written notice to Dodge and declined arbitration, filing directly in Yellowstone County District Court. The case settled for a full refund of the $52,000 purchase price.

Missoula: A buyer bought a 2023 Subaru Outback that experienced multiple electrical issues (windows, locks, dashboard warning lights) within 6 months. The vehicle spent 31 cumulative days at the service center for repairs to various electrical components. Using Montana’s “30 days out of service” rule, the buyer filed a lemon law notice. Subaru accepted the claim and offered a replacement vehicle of equal value.

Great Falls: A buyer purchased a 2024 Honda CR-V with a persistent engine knock appearing within the first 3 months and 5,000 miles. After 3 repair attempts at the Honda dealer, the owner proposed a final repair. When that repair also failed, the owner sent written notice and requested arbitration. The arbitrator ruled in favor of the buyer, awarding a full refund.

Common Mistakes Montana Lemon Law Buyers Make

• Not tracking out-of-service days carefully: Montana counts calendar days, not just business days. Keep a meticulous log to reach the 30-day threshold, including weekends and holidays.
• Accepting settlement offers without legal review: Before accepting a manufacturer’s refund or replacement offer, ensure it covers all costs (purchase price, taxes, registration, documentation fees) to avoid losing money.
• Failing to send formal written notice: Complaints to the dealer or informal conversations don’t start the lemon law clock. You must send notice via certified mail to create legal documentation.

Related Guides

• Lemon Law Guide: What to Do When Your Car Is Defective
• Montana Small Claims Court
• Montana Consumer Protection Laws
• Consumer Rights Guide

This article is for informational purposes only and does not constitute legal advice. Last reviewed: March 2026.