How to File a Wisconsin Lemon Law Claim

Step 1 — Recognize the trigger

• Defect substantially impairs use, value, or safety under § 218.0171(1)(f).
• Defect manifested during the warranty period.
• Manufacturer has had reasonable repair attempts — four for same nonconformity, OR 30 cumulative calendar days OOS.
• Within the 1-year window (or end of express warranty).

Step 2 — Document every repair attempt

Pull every repair order.

Step 3 — Send written election with the refund/replacement choice

Under Wis. Stat. § 218.0171(2)(b):

• Written — certified mail with return receipt is best practice (creates verifiable receipt date for the 30-day clock).
• Sent to the manufacturer, not the dealer.
• Use the address designated by the manufacturer for Lemon Law notices.
• Identify the defect specifically.
• Specifically elect refund OR replacement — not both.
• Reference Wis. Stat. § 218.0171 is good practice.

Step 4 — Calendar the 30-day clock

This is the signature step in Wisconsin Lemon Law practice. Calendar the 30-day clock to the day:

• Day 0: Manufacturer receives written election.
• Day 1-30: Manufacturer must deliver elected remedy in full.
• Day 31: Automatic § 218.0171(7) doubling attaches if not fully delivered.

Document every communication during the 30-day window. The Marquez strict-construction precedent means manufacturers cannot avoid doubling through substantial compliance.

Step 5 — Check for a mandatory informal dispute settlement procedure

Under Wis. Stat. § 218.0171(2)(c), if the manufacturer has established a qualifying procedure (typically BBB Auto Line), the consumer must use it before filing suit.

Step 6 — Choose path: BBB Auto Line OR court action

BBB Auto Line (if mandatory)

• Free.
• 60-100 day timeline.
• Decision binding on manufacturer if accepted.
• No attorney fees.
• No automatic doubling.

Court action

• Wisconsin Circuit Court — OR federal court (E.D./W.D. Wis.) under Magnuson-Moss concurrent jurisdiction (>$50K).
• Full discovery.
• AUTOMATIC doubling if 30-day window missed.
• MANDATORY § 218.0171(7) attorney fees.
• 12-24 month timeline.

For cases where the manufacturer missed the 30-day window, court action with automatic doubling is dominant.

Step 7 — File suit (if court action)

Complaint typically alleges:

• Breach of Lemon Law under Wis. Stat. § 218.0171.
• Plead § 218.0171(7) automatic doubling specifically with the precise non-compliance event.
• Breach of implied warranty under Wis. Stat. § 402.314 (Wisconsin UCC).
• Breach of warranty under Magnuson-Moss.

What you don’t need to do

• You do not need to attempt repairs at independent shops.
• You do not need to keep paying for warranty-covered repairs.

A timing checkpoint

• You’re within the 1-year Rights Period.
• You’ve sent written election with refund/replacement choice.
• You’ve calendared the 30-day clock.
• You’ve completed BBB Auto Line if certified.
• Your repair documentation is complete.

Bottom line

Wisconsin’s signature mechanism — written election + 30-day clock + automatic § 218.0171(7) doubling — creates structural pressure that produces strong outcomes for prevailing consumers. The procedural rules are unforgiving, but the substantive remedies are among the strongest in the country.

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