Does Michigan’s Lemon Law Cover Used Cars? Warranty and As-Is Rules

The question of whether the Michigan lemon law covers a used car has a short answer and a longer one. The short answer is no. The longer answer is that a used-car buyer in Michigan is not left without protection, but the protection comes from a different set of rules. This article explains what the lemon law covers, why used vehicles sit outside it, and which warranty and consumer-protection rules apply to a used purchase instead. It is one of the consumer topics covered in the Michigan Consumer Protection Act overview.

What Michigan’s lemon law actually covers

Michigan’s lemon law is the New Motor Vehicle Warranties Act, Act 87 of 1986. Its own definitions section limits it to a “new motor vehicle,” defined in MCL 257.1401 as a vehicle purchased or leased in Michigan (or by a Michigan resident) that is “covered by a manufacturer’s express warranty at the time of purchase or lease.” The same section defines “manufacturer” to exclude a new motor vehicle dealer, and it limits the covered vehicles to passenger cars and sport utility vehicles, not motor homes, buses, or trucks other than a pickup or van.

The remedy is aimed squarely at the manufacturer, not a used-car seller. Under MCL 257.1403, if a covered defect keeps recurring after a reasonable number of repair attempts, the manufacturer must replace the vehicle or refund the purchase price within 30 days. The statute presumes a “reasonable number” of attempts has been reached when the same defect has been repaired 4 or more times within 2 years of the first attempt, or when the vehicle has been out of service for repairs for 30 or more days within the first year after delivery.

Every element of that framework assumes a factory warranty and a manufacturer standing behind a car it built and sold new. That is the structure a used-car sale usually lacks.

Why used cars fall outside the lemon law

A used car generally is not “covered by a manufacturer’s express warranty at the time of purchase” in the way MCL 257.1401 requires. The original factory warranty was issued to the first buyer, and by the time a vehicle is resold that warranty has often expired by time or mileage. The lemon law’s repair-and-refund duty also runs to the manufacturer, while a used car is typically sold by a dealer or a private party who did not build the car and gave no factory warranty.

There is a narrow gray area. Some late-model used vehicles are still within the balance of the original manufacturer’s express warranty, and a manufacturer certified pre-owned program can extend factory coverage. A vehicle that a Michigan resident bought new, that is still under the original express warranty, and that develops a qualifying defect can fall within the lemon law even after the first repair visits, the law measures the repair window from delivery to the original consumer. But a routine used-car purchase, especially one made after the factory warranty lapsed, is not a lemon law case. Michigan has no separate used-car lemon law that fills the gap.

What protects a used-car buyer instead

Three other rules do most of the work for used purchases. The first is any written warranty the dealer chooses to provide. When a dealer sells a used car “with warranty,” the terms of that written warranty define what is covered and for how long, and the dealer, not a manufacturer, is on the hook.

The second is federal. The Magnuson-Moss Warranty Act, 15 U.S.C. § 2301 and following, governs written warranties on consumer products, including used cars, and limits a seller’s ability to strip away implied warranties when it also gives a written warranty or sells a service contract. A dealer that provides a written warranty on a used vehicle cannot simultaneously disclaim the basic implied warranty that the car is fit to drive.

The third is the FTC’s Used Car Rule, which requires dealers to post a Buyers Guide in the window of each used vehicle offered for sale. The FTC’s guidance on buying a used car from a dealer explains that the Buyers Guide states whether the vehicle is sold “as is” or with a warranty, lists which systems any warranty covers, and becomes part of the sales contract, overriding contrary spoken promises. Reviewing that sticker before signing is how a buyer learns which category the sale falls into.

1. Read the Buyers Guide in the window

   The Buyers Guide states whether the car is offered “As Is – No Dealer Warranty” or with a warranty. Under the FTC Used Car Rule, the dealer must display it, and its terms control over anything a salesperson says out loud.

2. Get any promise in writing

   A spoken assurance that “the dealer will cover the transmission” is difficult to enforce. The Buyers Guide and the sales contract are the documents that fix the dealer’s obligations, so any promised repair belongs in writing on those forms.

3. Keep the signed Buyers Guide and contract

   The FTC requires the dealer to give the buyer the completed Buyers Guide at sale. It, together with the purchase agreement and any separate written warranty, is the record of what was and was not promised.

What “as is” means for a Michigan used car

Most private-party sales and many dealer sales of older vehicles are made “as is.” In Michigan, that phrase has a specific legal effect under the Uniform Commercial Code. MCL 440.2316 provides that, unless the circumstances indicate otherwise, expressions like “as is” or “with all faults” exclude all implied warranties, including the implied warranty of merchantability, which is the background promise that goods are fit for their ordinary purpose.

The same statute sets rules for how a seller must word a disclaimer. To exclude the implied warranty of merchantability in a writing, the language must mention “merchantability” and, in a writing, must be conspicuous. A seller can also cut off implied warranties as to defects a buyer would have found if the buyer examined the car, or refused to examine it, before buying.

The federal Magnuson-Moss limit still operates on top of this: a dealer cannot both give the buyer a written warranty and disclaim implied warranties “as is.” The “as is” route is available only when the dealer provides no written warranty at all.

When a used-car problem may still be actionable

Even outside the lemon law, a used-car buyer is not without recourse in specific situations. A dealer that misrepresents a material fact, rolling back an odometer, hiding prior flood or collision damage, or advertising a warranty it does not honor, can face liability separate from any warranty. Deceptive conduct of that kind is the territory of Michigan’s Consumer Protection Act, and the rights and remedies under the Michigan Consumer Protection Act reach unfair and deceptive trade practices that a warranty analysis alone would miss.

A written warranty or a service contract that the dealer fails to honor is a separate claim, enforceable under both the contract itself and the Magnuson-Moss Warranty Act. And a sale that is not effectively disclaimed, where the paperwork never mentioned “merchantability” or the “as is” language was not conspicuous under MCL 440.2316, may leave the implied warranty of merchantability intact despite the seller’s intent. Which of these paths fits a given purchase depends on the documents signed and what the seller said and did, not on the lemon law.