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Lemon Law Demand Letter — Missouri

In Missouri, a new vehicle is presumed a lemon if, within the earlier of the express warranty term or 1 year after original delivery, it has had four or more repair attempts for the same defect, or the vehicle out of service a cumulative 30 or more working days. Below is a ready-to-edit lemon law demand letter with Missouri's statute — the Missouri Lemon Law — already cited; add your vehicle and repair history, then send it to the manufacturer.

Missouri at a glance

  • Coverage window: the earlier of the express warranty term or 1 year after original delivery.
  • The tests: four or more repair attempts for the same defect, or the vehicle out of service a cumulative 30 or more working days.
  • What this letter does: the consumer’s responsibility — written notification to the manufacturer of the need for repair, giving it an opportunity to cure; once you deliver the vehicle to an authorized repair facility after that notice, the manufacturer has 10 calendar days to conform it to the warranty.
  • Where it escalates: the manufacturer’s informal dispute settlement or mediation process if it offers one (generally required first — it has 10 days to respond, and if unresolved within 40 days you may proceed to a lawsuit), where a prevailing consumer recovers costs and reasonable attorney’s fees.
  • Certified mail with proof of delivery is the recommended way to send this — Missouri’s statute doesn’t name a required mailing method, but you’ll want dated proof the manufacturer received it.
  • Missouri’s statute doesn’t specify a required mailing method for this notice, unlike several neighboring states.

Lemon Law Demand Letter

Copy the letter below into the editor, replace the text in [brackets] with your details, and PostPal will print and mail it for you.

Subject: Lemon Law Notice — Demand for Repurchase or Replacement
[Your Name]
[Your Address]
[City, Missouri ZIP Code]
[Your Phone Number]
[Your Email]

[Date]

[Manufacturer Name] — Customer Relations / Owner Relations
[Manufacturer Address — listed in your warranty booklet or owner's manual]

RE: Written notice and demand under the Missouri Lemon Law
Vehicle: [Year] [Make] [Model], VIN [VIN]

Dear [Manufacturer Name] Owner Relations,

I am the [owner / lessee] of a [Year] [Make] [Model], VIN [VIN], purchased [or leased] new on [Purchase Date] from [Dealer Name] in [City], Missouri.

Since delivery, the vehicle has exhibited the following defect: [describe the defect and how it impairs the vehicle's use, value, or safety]. The vehicle has been presented to your authorized dealer for repair of this defect on the following occasions:

• [Date] — [Repair order #] — [What was done]
• [Date] — [Repair order #] — [What was done]
• [Date] — [Repair order #] — [What was done]

In total, the defect has been subject to [number] repair attempts, and the vehicle has been out of service for [number] days. The defect remains uncorrected.

Under Missouri’s Lemon Law (Mo. Rev. Stat. §§ 407.560 to 407.579), a manufacturer that cannot conform a new motor vehicle to its express warranty after a reasonable number of repair attempts must replace it or refund the purchase price. A reasonable number of attempts is presumed where the same nonconformity has been subject to repair four or more times and continues to exist, or the vehicle has been out of service a cumulative 30 or more working days, within the earlier of the express warranty term or 1 year after delivery.

This letter is my written notification of the nonconformity and my request that you cure it. Once I deliver the vehicle to an authorized repair facility, you have 10 calendar days to conform it to the warranty. If it remains uncorrected, I intend to pursue replacement or a refund through your dispute resolution process, if you offer one, or in court, without further notice to you.

Copies of my repair orders are available on request. Please respond in writing to the address above.

Sincerely,
[Your Signature]
[Your Printed Name]

What your lemon law demand letter must include

  • Your full name, address, and contact details
  • The vehicle’s year, make, model, and VIN, plus the purchase/lease date and selling dealer
  • A clear description of the defect and how it impairs the vehicle’s use, value, or safety
  • The full repair history: dates, repair-order numbers, and days out of service (Missouri looks for four or more repair attempts for the same defect, or the vehicle out of service a cumulative 30 or more working days)
  • What you are demanding — a repurchase (refund) or a comparable replacement vehicle
  • A deadline for the manufacturer to respond, and where to send its response

Frequently asked questions

When does a car qualify as a lemon in Missouri?

The defect must substantially impair the vehicle's use, value, or safety, and the manufacturer must have had a reasonable chance to fix it — in Missouri that is presumed within the earlier of the express warranty term or 1 year after original delivery, after four or more repair attempts for the same defect, or the vehicle out of service a cumulative 30 or more working days. Keep every repair order; the paper trail is the claim.

Do I need to use an official form?

No official form, and no required mailing method — Missouri’s statute doesn’t specify how this notice must be sent. Certified mail with proof of delivery is simply the standard, recommended way to establish when the manufacturer received it.

Who do I send the letter to — the dealer or the manufacturer?

The manufacturer. Lemon law obligations run against the vehicle manufacturer, not the selling dealer — send it to the manufacturer’s customer/owner relations address listed in your warranty booklet or owner’s manual (PostPal’s where-to-mail directory also lists head-office addresses for major automakers like Ford, General Motors, and Tesla). Keep dealing with the dealer for the repairs themselves.

What happens after I send it?

The manufacturer has 10 calendar days to repair the vehicle once you deliver it to an authorized facility after this notice. If the defect persists, most manufacturers require you to try their informal dispute or mediation process first — the manufacturer then has 10 days to respond, and if it’s not resolved within 40 days you can file a lawsuit, where a prevailing consumer recovers costs and reasonable attorney’s fees.

More lemon law demand letter templates for other states

Facts verified against official sources on September 3, 2026: revisor.mo.gov, yourlemonlawrights.com.

This template is provided for convenience only. It is not legal advice and does not create a lawyer-client relationship. Court limits and rules change — confirm anything time-sensitive on the official page, and consult a qualified legal professional for advice specific to your situation.