How Long Do I Have to File an Illinois Lemon Law Claim?

Illinois’s lemon-law timing rules involve three statutes. See our detailed statute of limitations article for the full framework.

The three deadlines

Statute	Deadline	Triggered by
Illinois Lemon Law — statutory warranty period (815 ILCS 380)	12 months OR 12,000 miles	Original delivery date
Illinois Lemon Law — suit-commencement deadline (815 ILCS 380/3)	18 months from delivery	Original delivery date
ICFA (815 ILCS 505)	3 years from accrual	Date violation occurred / discovered
Magnuson-Moss / Illinois UCC 810 ILCS 5/2-725	4 years from delivery	Original delivery date

12-month / 12,000-mile statutory warranty period

This is the tightest statutory warranty period among major-state lemon laws — the defect must arise within it.

18-month suit-commencement deadline

Under 815 ILCS 380/3, any Lemon Law action must be commenced within 18 months of original delivery. Even after the 12-month / 12,000-mile warranty period closes, a qualifying consumer can file suit up to the 18-month mark — but not after.

ICFA’s 3-year limitations period

ICFA claims — 3 years from accrual.

Magnuson-Moss / Illinois UCC 4-year limit

Magnuson-Moss — 4 years from delivery under 810 ILCS 5/2-725.

Practical strategy

Time since delivery	Best avenues
0 – 9 months	All three open; Lemon Law fastest.
9 – 12 months	Statutory warranty period closing — document repair attempts now.
12 – 18 months	Warranty period closed, but the Lemon Law suit can still be commenced before 18 months.
18 months – 3 years	Lemon Law time-barred; pursue ICFA + Magnuson-Moss.
3 – 4 years	ICFA past limits; Magnuson-Moss only.
4+ years	Few viable options.

Mileage-based closure

12,000-mile threshold is independent of time. High-mileage drivers may reach 12,000 miles in 3-6 months.

What to do if past the 18-month deadline

1. Don’t give up — ICFA and Magnuson-Moss may apply.
2. Document the timeline carefully.
3. Talk to a Illinois lemon-law attorney.

File promptly

The closer to the defect manifestation, the cleaner the case. Get a free case review early.

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