Wisconsin Lemon Law Buyback Calculator

A Wisconsin lemon law buyback centers on the vehicle's purchase price, reduced only by a mileage offset for pre-defect use. That offset is generally figured as (miles at first repair attempt ÷ 120,000) × purchase price. For a $40,000 truck with 9,000 miles when the defect first appeared, the offset is about $3,000, leaving roughly $37,000 in refundable purchase price before incidental damages such as sales tax, license fees, and finance charges are added back.

Wisconsin recognizes a "lemon presumption" that shifts the burden to the manufacturer once your repair history crosses set thresholds. If the dealer cannot fix the same substantial, warranty-covered defect after 4 repair attempts, or if the vehicle is out of service for a cumulative 30 days, the vehicle is presumed to be a lemon. This presumption generally applies within the first 12 months of ownership.

Wisconsin's state lemon law generally covers new vehicles purchased with a manufacturer's warranty. If your vehicle is used or falls outside the state statute, you may still have a claim under the federal Magnuson-Moss Warranty Act, which applies to written warranties nationwide.

You generally have 3 years to bring a lemon law claim in Wisconsin, in line with the national average of 2.4 years. Acting before the warranty expires and while repair records are fresh protects your claim. When a vehicle qualifies, Wisconsin requires the manufacturer to repurchase or replace it rather than keep attempting repairs. Wisconsin's lemon law provides for an award of attorney fees to a consumer who wins (Wisconsin Statutes 218.0171(7)(a)).