Yes, Illinois has a lemon law. The New Vehicle Buyer Protection Act, codified at 815 ILCS 380, requires a manufacturer to replace or buy back a qualifying new vehicle when a serious defect cannot be repaired after a reasonable number of attempts.1Justia Law. Illinois Code 815 ILCS 380 – New Vehicle Buyer Protection Act The rules below explain who qualifies, what triggers the remedy, and how to enforce it.
Which Vehicles Are Covered
The law applies to new vehicles bought or leased in Illinois for primarily personal, family, or household use. Leases must run for at least one year. Covered vehicles include passenger cars, light trucks and vans under 8,000 pounds, motorhomes, and vehicles purchased by a fire department, fire protection district, or township fire department.
Used cars, motorcycles, camping trailers, and travel trailers are outside the statute.1Justia Law. Illinois Code 815 ILCS 380 – New Vehicle Buyer Protection Act Owners of those vehicles may still have federal warranty or state consumer fraud remedies, covered at the end of this article.
What Counts as a Qualifying Defect
The defect must be a “nonconformity” — a condition that substantially impairs the vehicle’s use, market value, or safety. A dashboard rattle or minor cosmetic scratch generally does not meet that bar unless it meaningfully affects drivability or resale value.2Illinois Attorney General. Consumer Protection – Auto Sales and Repairs
The problem also has to fall under the manufacturer’s express warranty. If it stems from an aftermarket modification or add-on installed by someone else, responsibility shifts to whoever did that work, not the manufacturer.1Justia Law. Illinois Code 815 ILCS 380 – New Vehicle Buyer Protection Act
When a Vehicle Becomes a Lemon
The defect must first appear, and repair attempts must begin, within the statutory warranty period: the first 12 months after delivery or the first 12,000 miles, whichever comes first. Within that window, a vehicle is presumed to be a lemon when either of the following happens:
- The same nonconformity has been brought in for repair at least four separate times and still exists.
- The vehicle has been out of service for warranty repairs for a cumulative total of at least 30 business days. The days do not have to be consecutive, and they can involve different covered defects.
Illinois does not shorten these thresholds for safety-related defects. The same four-attempt or 30-day standard applies to a brake or steering problem as to any other covered defect.2Illinois Attorney General. Consumer Protection – Auto Sales and Repairs
Refund or Replacement
Once the vehicle qualifies, the manufacturer must either replace it or take it back. A replacement must be a new vehicle of the same model line if one is available, or a comparable vehicle if not.
A buyback must return the full purchase price or total lease cost plus collateral charges such as dealer fees and finance charges. Sales tax is specifically excluded from collateral charges, so the manufacturer is not required to reimburse the tax you paid at purchase.1Justia Law. Illinois Code 815 ILCS 380 – New Vehicle Buyer Protection Act
The manufacturer may subtract a “reasonable allowance” for the time you drove the vehicle before the defect surfaced. The statute does not fix a formula for that offset, so the amount is often negotiated as part of the claim.
How to File a Claim
Keep Every Repair Record
Your case is built on paper. Save every repair order and invoice, and make sure each shows the drop-off and return dates, the odometer reading, and a description of the reported problem. These documents prove the defect appeared inside the 12,000-mile window and that you hit the four-attempt or 30-day threshold. A written log of calls with the dealer and manufacturer — names, dates, and what was said — fills in the gaps that receipts miss.
Send Written Notice to the Manufacturer
Send a written demand to the manufacturer by certified mail with return receipt requested. If the warranty booklet or owner’s manual lists a specific notice address, use it. The manufacturer can only require direct notice from you if it clearly disclosed that requirement in the warranty materials. Include the VIN, a description of the recurring defect, and a summary of the repair history.3Illinois General Assembly. New Vehicle Buyer Protection Act
Informal Dispute Resolution
You may have to go through the manufacturer’s informal dispute resolution program before suing. That step is only mandatory when the manufacturer runs a program that complies with the Federal Trade Commission’s Dispute Resolution Rule under the Magnuson-Moss Warranty Act.4Federal Trade Commission. Businessperson’s Guide to Federal Warranty Law Major automakers commonly do.
If you disagree with the arbitrator’s decision, you can still file a lawsuit. The decision is admissible as evidence but does not bind you, and the time your claim spent in the program is added to your filing deadline.3Illinois General Assembly. New Vehicle Buyer Protection Act
File Within 18 Months
Any lawsuit under the Illinois lemon law must be filed within 18 months of the date the vehicle was originally delivered to you. Miss the deadline and you lose the claim, even with strong evidence. Days spent in informal dispute resolution extend the window.1Justia Law. Illinois Code 815 ILCS 380 – New Vehicle Buyer Protection Act
If the Lemon Law Does Not Apply
If your vehicle is used, is a motorcycle, or the defect appeared after the 12-month or 12,000-mile window, other laws may still help.
The federal Magnuson-Moss Warranty Act applies to any consumer product sold with a written warranty, including used cars, motorcycles, and RVs. It does not set repair-attempt thresholds, but it stops manufacturers from disclaiming implied warranties when they offer a written one, and it lets you sue in state court when a warrantied product repeatedly fails.4Federal Trade Commission. Businessperson’s Guide to Federal Warranty Law
Dealers who sell more than five used vehicles in 12 months must comply with the FTC’s Used Car Rule, which requires a Buyers Guide showing whether the vehicle is sold “as is” or with a warranty. Warranty terms posted on the Buyers Guide become part of your contract; oral promises do not, so insist on writing.5Federal Trade Commission. Dealer’s Guide to the Used Car Rule
The Illinois Consumer Fraud and Deceptive Business Practices Act (815 ILCS 505) reaches further. If a dealer hid a known defect, rolled back an odometer, or made misleading claims about a vehicle’s condition, you may have a claim for deceptive practices whether the vehicle is new or used, with possible recovery of actual damages, punitive damages, and attorney’s fees.