How to File a Colorado Lemon Law Claim

Step 1 — Recognize the trigger

• Defect substantially impairs use or market value under § 42-10-102.
• Defect manifested during the warranty period.
• Manufacturer has had reasonable repair attempts — three for same nonconformity (two for safety-related), OR 24 cumulative business days OOS.
• Within the 2-year / 24,000-mile window.

Step 2 — Document every repair attempt

Pull every repair order. Track business-day OOS carefully (weekends and holidays don’t count).

Step 3 — Send written notice with the final repair opportunity

Under C.R.S. § 42-10-104 (as amended by SB24-192):

• Written and sent by certified mail with return receipt — this is required to start the cure clock.
• Sent to the manufacturer, not the dealer.
• Use the address designated by the manufacturer for Lemon Law notices.
• Identify the defect specifically.
• Demand a final repair opportunity.
• Reference C.R.S. § 42-10-103 is good practice.

Step 4 — Allow the 10-business-day cure period

After the certified-mail notice, SB24-192 gives the manufacturer 10 business days to cure the nonconformity before the consumer can invoke Lemon Law remedies.

Step 5 — Check for a mandatory informal dispute settlement procedure

Under C.R.S. § 42-10-105, 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.
• Lemon Law remedies only.

Court action

• Colorado District Court — OR federal court (D. Colo. — Denver/Grand Junction) under Magnuson-Moss concurrent jurisdiction (>$50K).
• Full discovery.
• § 42-10-106 Lemon Law fees + mandatory § 6-1-113(2)(b) CCPA fees.
• Parallel CCPA $500 penalty + bad-faith treble damages.
• 12-24 month timeline.

For most cases with meaningful CCPA bad-faith exposure, court action produces materially better outcomes.

Step 7 — File suit (if court action)

Complaint typically alleges:

• Breach of warranty under C.R.S. § 42-10-104.
• Breach of implied warranty under C.R.S. § 4-2-314 (Colorado UCC).
• Violations of CCPA (C.R.S. § 6-1-105).
• 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 2-year / 24,000-mile Rights Period.
• You’ve sent § 42-10-104 certified-mail notice and allowed the 10-business-day cure.
• You’ve completed BBB Auto Line if certified.
• Your repair documentation is complete.

Bottom line

Colorado’s procedural rules are standard. The 2-year / 24,000-mile Rights Period (and 30-month filing deadline) reward prompt action, and the CCPA’s mandatory § 6-1-113(2)(b) fees plus bad-faith treble damages make court action with parallel CCPA claims attractive when bad-faith exposure is in play.

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