Illinois Lemon Law (2026): How to Qualify and Get a Refund

Illinois's New Vehicle Buyer Protection Act (815 ILCS 380) gives new-vehicle buyers the right to a full refund or comparable replacement if a manufacturer cannot fix a substantial defect after four repair attempts or 30 cumulative business days out of service, within the first 12 months or 12,000 miles of ownership.

Overview of Illinois Lemon Law

The Illinois New Vehicle Buyer Protection Act (815 ILCS 380) protects consumers who purchase or lease new vehicles that turn out to have serious, unrepairable defects. If a manufacturer or its authorized dealers cannot fix a substantial problem after a reasonable number of attempts, the consumer has the right to a full refund or a comparable replacement vehicle.

Illinois enacted this law to hold manufacturers accountable when a new vehicle fails to meet its express warranty. The statute covers the first 12 months or 12,000 miles of ownership, whichever comes first.

This guide explains who qualifies, what vehicles are covered, how the claims process works, and what remedies are available under current Illinois law.

What Vehicles Does Illinois Lemon Law Cover?

The New Vehicle Buyer Protection Act defines "new vehicle" broadly. Several categories of vehicles qualify for protection.

Covered Vehicle Types

Vehicles Not Covered

• Motorcycles
• Camping trailers and travel trailers (unless they qualify under the statute's definitions)
• Commercial vehicles used primarily for business purposes
• Off-road vehicles not designed for highway use
• Used vehicles previously titled to a consumer
• Vehicles purchased for commercial fleets

Who Qualifies as a Consumer?

Under 815 ILCS 380/2, a "consumer" is an individual who purchases, or leases for a term of at least one year, a new vehicle for primarily personal, household, or family purposes. A lease shorter than one year does not qualify. Illinois fire departments, fire protection districts, and township fire departments that purchase or lease a new vehicle for at least one year are also covered as consumers.

Illinois Lemon Law Presumption

Illinois law creates a legal presumption that a manufacturer has had a reasonable number of chances to repair your vehicle if certain conditions are met within the statutory warranty period.

The Statutory Warranty Period

The statutory warranty period begins on the date the new vehicle is delivered to the consumer. It ends at 12 months or 12,000 miles, whichever occurs first. All repair attempts and out-of-service days must fall within this window to trigger the presumption.

When the Presumption Applies

Notification Requirement

Before the presumption takes effect, the consumer must send written notice directly to the manufacturer if the manufacturer has established a procedure for receiving such notice. This requirement must be clearly disclosed in the vehicle's warranty or owner's manual. If no such procedure exists, the consumer does not need to send separate notice to the manufacturer.

What Counts as a Substantial Impairment?

The nonconformity must "substantially impair" the use, market value, or safety of the vehicle. The statute does not provide a specific list, but common examples include:

• Engine or transmission failures that affect drivability
• Brake system malfunctions creating safety hazards
• Steering defects that compromise vehicle control
• Electrical system failures affecting critical safety or operational components
• Persistent warning lights indicating unresolved mechanical problems
• Fuel system issues causing stalling, poor performance, or safety risks
• HVAC failures making the vehicle uncomfortable or unsafe in extreme weather
• Battery or charging system defects in electric vehicles

Consumer Remedies: Refund vs. Replacement

When a vehicle qualifies as a lemon under 815 ILCS 380/3, the manufacturer must provide one of two remedies. Under the statute, the manufacturer chooses which remedy to offer, though consumers may express a preference.

Option 1: Full Refund (Vehicle Buyback)

If the manufacturer offers a refund, it must pay:

• Full purchase price or lease cost: The total amount paid for the vehicle
• All collateral charges: Taxes, license fees, registration fees, finance charges, and similar costs
• Incidental damages: Reasonable expenses for towing, rental vehicles, and related costs

Minus a reasonable allowance for use. The statute defines this as the amount of wear and tear on the vehicle during two specific periods: (1) the time before the consumer first reported the nonconformity for repair, and (2) any subsequent time when the vehicle was not out of service for repairs. This means the manufacturer cannot charge you for depreciation during the days your vehicle sat in the shop.

Option 2: Comparable Replacement Vehicle

Instead of a refund, the manufacturer may offer a replacement vehicle that is:

• A new vehicle of like model line, if available
• Otherwise, a comparable motor vehicle
• Covered by all applicable manufacturer warranties

Refund Distribution

The manufacturer must distribute refund amounts to the consumer and any lienholder (such as a bank or credit union holding a loan on the vehicle) based on their respective interests.

How to File a Lemon Law Claim in Illinois

Filing a successful lemon law claim requires careful documentation and following the correct steps in the right order.

Step 1: Document Everything From Day One

Strong documentation is the foundation of any lemon law claim. Keep organized records of:

• All repair orders, invoices, and receipts
• Dates and duration of each repair visit
• Written descriptions of the symptoms you experienced
• All correspondence with the dealer and manufacturer
• Photos or videos showing the defect
• A personal log tracking every repair attempt, including dates and mileage

Step 2: Notify the Manufacturer in Writing

If the manufacturer has established a procedure for direct notice (check your warranty booklet or owner's manual), send written notification that includes:

• Your full name and contact information
• Vehicle details: year, make, model, and VIN
• A clear description of the nonconformity
• A summary of all repair attempts with dates
• Your requested remedy (refund or replacement)

Send this notice by certified mail with return receipt requested so you have proof of delivery.

Step 3: Allow a Reasonable Number of Repair Attempts

Give the manufacturer and its authorized dealers a fair opportunity to fix the vehicle. Under Illinois law, this generally means allowing at least four attempts for the same problem or having the vehicle out of service for at least 30 business days.

Step 4: Use the Manufacturer's Arbitration Program if Required

Under 815 ILCS 380/4, if the manufacturer has established an informal dispute settlement procedure that meets federal FTC standards (16 CFR Part 703), you must use that program before filing a lawsuit. BBB AUTO LINE is the program most manufacturers use in Illinois. Check your owner's manual or warranty booklet to see whether your manufacturer participates.

The Illinois Attorney General's office does not operate its own lemon law arbitration program, but it does take and help mediate consumer complaints. You can file a general consumer complaint through the AG's online complaint portal. Arbitration through the manufacturer's program is often faster and less expensive than going to court.

Step 5: File a Lawsuit if Necessary

If arbitration does not resolve your claim, you may file a civil lawsuit against the manufacturer. Prevailing consumers may recover reasonable attorney fees, which means many lemon law attorneys will take cases on a contingency basis with no upfront cost to you.

Manufacturer Arbitration in Illinois

Arbitration through the manufacturer's own program is often faster than litigation and can resolve a dispute without a lawsuit.

Manufacturer Arbitration Programs

Under 815 ILCS 380/4, if the manufacturer has established an informal dispute settlement procedure that complies with Federal Trade Commission regulations (16 CFR Part 703) and disclosed it to the consumer, the consumer must use that program before pursuing a refund or replacement in court. BBB AUTO LINE is the most widely used manufacturer program in Illinois. The consumer is never bound by an unfavorable manufacturer arbitration decision and retains the right to pursue other legal remedies.

The Attorney General's Role

There is no separate Illinois Attorney General arbitration program that issues decisions in lemon law disputes. The Attorney General's office takes consumer complaints and can help mediate a dispute, but it does not adjudicate lemon law claims. Consumers can file a complaint through the AG's online complaint portal.

Benefits of Manufacturer Arbitration

• Resolves disputes faster than litigation
• No cost or minimal cost to the consumer
• Less formal procedures than a courtroom
• An unfavorable decision does not prevent you from filing a lawsuit

Manufacturer Defenses Under Illinois Law

Manufacturers may raise affirmative defenses to avoid liability. Under 815 ILCS 380/3, the following defenses are recognized.

Common Manufacturer Defenses

Seller's Duty to Inform Consumers

Under 815 ILCS 380/7, every seller who delivers a new vehicle to a consumer must provide a written statement that clearly and conspicuously sets forth the consumer's rights under the Act. This includes the repair-attempt presumptions and the consumer's right to a refund or replacement.

If your dealer did not provide this written statement at the time of purchase, that fact may support your claim.

Used Vehicle Protections in Illinois

The New Vehicle Buyer Protection Act covers only new vehicles. However, Illinois provides other avenues of protection for used car buyers.

Remaining Manufacturer Warranty

If you purchase a used vehicle still covered by the original manufacturer's warranty, you may have protection for defects that occur during that warranty period.

Federal Magnuson-Moss Warranty Act

The Magnuson-Moss Warranty Act (15 U.S.C. 2301) is the federal backstop for all consumer products sold with a written warranty, including vehicles. It applies regardless of whether your state lemon law covers your situation. Under Magnuson-Moss, a consumer with any written warranty (including dealer warranties and extended service contracts on used vehicles) may bring a federal claim if the warrantor fails to honor the warranty. Attorney fees are available to prevailing consumers.

Illinois Consumer Fraud and Deceptive Business Practices Act

Used vehicle buyers may pursue remedies under 815 ILCS 505 if the dealer engaged in fraudulent or deceptive sales practices, such as failing to disclose known defects or rolling back the odometer.

Leased Vehicle Rights

The Illinois lemon law applies equally to leased vehicles, provided the lease term is for at least one year. Lessees who meet this threshold have the same rights as purchasers.

Leased Vehicle Remedies

If a leased vehicle qualifies as a lemon, the consumer may receive:

• Return of all lease payments made to date
• Refund of any down payment or security deposit
• Reimbursement of incidental costs (towing, rentals)
• Or a comparable replacement vehicle

Lease Termination

When a leased vehicle is returned under the lemon law, the lease agreement terminates. The lessee owes no additional amounts under the lease, and the lessor and manufacturer must handle the vehicle disposition.

Statute of Limitations and Filing Deadlines

Understanding the deadlines for Illinois lemon law claims is critical. Missing a deadline can permanently bar your claim.

Key Deadlines

Tolling Provisions

The statutory time periods may be extended (tolled) during periods when repair services are unavailable due to conditions beyond the consumer's control, such as war, invasion, strike, fire, flood, or other natural disasters.

Tips for Strengthening Your Illinois Lemon Law Claim

Taking proactive steps early in the process can significantly improve your chances of a successful outcome.

• Report problems immediately. The sooner you report a nonconformity, the smaller the usage allowance deduction from your refund will be.
• Always use authorized dealers. Repairs must be performed by the manufacturer's authorized dealers or agents for them to count toward the lemon law threshold.
• Get everything in writing. Verbal promises from a service advisor are difficult to prove. Ask for written repair orders every time.
• Keep your own records. Do not rely solely on the dealer's records. Maintain your own log of dates, mileage at drop-off and pickup, and descriptions of the problem.
• Check for NHTSA recalls and complaints. If other owners have reported the same defect, that information supports your claim that the problem is a manufacturing defect rather than owner misuse.
• Do not make unauthorized modifications. Aftermarket parts can give the manufacturer a defense. Keep the vehicle in factory condition until your claim is resolved.
• Consult an attorney early. Because Illinois allows prevailing consumers to recover attorney fees, many lemon law lawyers offer free consultations and contingency-fee arrangements.

More Illinois Laws

• Illinois Car Accident Laws