Michigan Lemon Law for New Cars: Notice, Refunds, Arbitration

The Michigan lemon law for new cars, formally the New Motor Vehicle Warranties Act (MCL 257.1401–257.1410), lets you demand a replacement vehicle or a full refund when a manufacturer cannot fix a defect that substantially impairs your car’s use or value. You qualify once the same defect has gone through four failed repair attempts, or once the vehicle has sat out of service for a cumulative 30 days or more during the warranty coverage period. Before you can collect, you have to send the manufacturer written notice and give it one final chance to repair.

Who and What the Law Covers

The statute applies to new passenger cars, SUVs, pickup trucks, and vans either purchased or leased in Michigan, or purchased or leased anywhere by a Michigan resident, as long as the vehicle is still under the manufacturer’s express warranty when you acquire it.¹ Motor homes, buses, other trucks, and anything built to travel on fewer than four wheels are excluded, so motorcycles and three-wheelers fall outside the law entirely.

The “consumer” definition is wider than many people assume. It covers anyone who buys or leases a new vehicle for personal, family, or household use, and it also covers buyers or lessees who acquire fewer than ten new vehicles per year, which pulls many small-business fleet purchases into coverage. Anyone otherwise entitled to enforce the manufacturer’s express warranty under its own terms qualifies as well.¹

The defect itself has to substantially impair the vehicle’s use or value to you. A transmission that slips without warning, failing brakes, or an electrical system that cuts out all clear that bar. Cosmetic complaints and minor annoyances generally do not, no matter how many service visits they generate. The defect must first appear, and be reported to the manufacturer or an authorized dealer, within the earlier of one year from delivery or the term of the express warranty.²

The Two Ways a Car Becomes a Lemon

Michigan law creates a legal presumption that a vehicle is a lemon when either of two thresholds is met. You only need to clear one.

The same defect that substantially impairs use or value has been subject to repair four or more times during the coverage period and still exists.
The vehicle has been out of service a cumulative 30 or more days, or parts of days, during the coverage period for repairs of any nonconformities. Those days do not have to be consecutive.

Once a threshold is met and you have completed the notice step below, the manufacturer has 30 days to deliver a replacement or refund.²

The Written Notice You Have to Send

Before you can demand a remedy, the manufacturer gets one last repair opportunity, and you trigger it with written notice sent by return receipt service to the address printed in your owner’s manual or warranty booklet. Skip this step, or use regular mail, and a court can dismiss your claim before it reaches the merits.

If you are pursuing the four-repair path, send the notice any time after the third failed repair attempt. The final repair the manufacturer then arranges counts as the fourth attempt. If you are pursuing the 30-day path, send the notice once the vehicle has been out of service at least 25 days. Sending it earlier than 25 days or skipping it altogether will undermine the claim.

After receiving your notice, the manufacturer must tell you, as soon as reasonably possible, where to take the car for the final repair. Once you deliver it to that facility, the manufacturer has exactly five business days to fix the problem.² If the defect is still there on day six, you have cleared the last procedural hurdle.

Replacement or Refund: What You Actually Get

If you purchased the vehicle, you choose between a comparable replacement vehicle currently in production that you find acceptable, or a full refund. The refund covers the vehicle’s sales price, any cash you paid, the value of any trade-in, options or modifications installed by or for the manufacturer, sales tax, and license, registration, and similar government charges.¹ It does not cover debt rolled in from a prior transaction or manufacturer rebates and incentives that already reduced your price.

If you leased the vehicle, you are entitled to a refund of all lease payments made plus any security deposit. A replacement is available only if you agree to it, and if you accept one, the lease terms stay the same apart from the vehicle identification. The manufacturer cannot use the swap as leverage to renegotiate your rate or other terms.²

When towing or a rental car was necessary because of the defect and the manufacturer did not cover them, those reasonable costs get reimbursed too.

How the Mileage Deduction Shrinks Your Refund

The manufacturer is allowed a “reasonable allowance for use” deduction for the trouble-free miles you drove. The formula: purchase or lease price multiplied by a fraction whose numerator is the miles driven before the defect was first reported and whose denominator is 100,000. Any mileage beyond 25,000 miles also gets added to the numerator.²

A worked example. On a $40,000 vehicle where the defect first showed up at 8,000 miles, the deduction is $40,000 × (8,000 ÷ 100,000), or $3,200. Your refund would be $40,000 minus $3,200, plus taxes and fees you paid, minus the appraised value of any damage that was not caused by normal use or by the defect itself.

If you drove far past 25,000 miles while trying to get the defect resolved, a court or arbitration panel can reduce the deduction for miles beyond that mark if it finds the car was not providing reliable transportation during that stretch. The provision exists so consumers are not penalized for mileage accumulated on a car that was intermittently broken while the manufacturer dragged its feet.

Arbitration or Court

If the manufacturer runs an informal dispute resolution program, and most major automakers do, you generally have to use it before filing suit. These programs have to meet the Federal Trade Commission’s standards under 16 CFR Part 703.³

If no qualifying arbitration program exists, or if the arbitration outcome does not resolve things, you can sue in Michigan state court. The statute does not limit any other legal remedy you have for breach of an express or implied warranty, which keeps the door open to claims under the federal Magnuson-Moss Warranty Act or Michigan’s Uniform Commercial Code.⁴

A Note on Resold Lemon Vehicles

Michigan’s lemon law contains no provision requiring a manufacturer to disclose that a vehicle was returned under the statute before reselling it. The state does not brand lemon buyback titles. If you are shopping used in Michigan, the title alone will not warn you, and a vehicle history report is the better tool, though not a guaranteed one.

Protecting the Claim

The most common way people lose these cases is a thin paper trail. Every service visit should produce a written repair order that describes the problem in your own words, not just a technician’s shorthand, with accurate drop-off and pick-up dates recorded. Keep copies of everything, including every communication with the dealer and the manufacturer. If you are pursuing the 30-day path, those day counts are your evidence.

When you send the final notice, use return receipt service, send it to the exact address in your warranty booklet, describe the defect, state how many repair attempts have been made or how many days the car has been out of service, and keep the receipt.

If you are approaching either threshold, consider talking to an attorney before you send the notice rather than after things go wrong. Michigan courts have awarded attorney fees to successful lemon law claimants, and many lemon law attorneys take these cases on a contingency or fee-shifting basis, with the manufacturer paying legal costs if you win.

1
Michigan Legislature. Michigan Compiled Laws 257.1401 – Definitions
2
Michigan Legislature. Michigan Code 257.1403 – Continuation of Defect or Condition, Remedies
3
eCFR. 16 CFR Part 703 – Informal Dispute Settlement Procedures
4
Michigan Legislature. Michigan Compiled Laws 257.1404 – Other Legal Remedies Not Limited or Prohibited