Qualifying Defects Under Minnesota Lemon Law
What kinds of vehicle defects qualify for a Minnesota Lemon Law refund — the substantial-impairment test under Minn. Stat. § 325F.665.
A defect qualifies under the Minnesota Lemon Law when it constitutes a “nonconformity” that substantially impairs the use or market value of the vehicle under Minn. Stat. § 325F.665 subd. 1(d).
Topics in this section
- Transmission defects
- Engine defects
- Brake-system defects
- Electrical and software defects
- Steering and suspension defects
- Infotainment defects
- EV-specific defects
The substantial-impairment test in Minnesota
§ 325F.665 subd. 1(d) defines a “nonconformity” as a defect that “substantially impairs the use or market value” of the vehicle. Two-prong test (use OR market value) — though safety defects typically qualify under “use” or “market value.”
The 1-attempt serious safety defect category — distinctive
§ 325F.665 subd. 3(b)(2) provides that a single repair attempt suffices for a “serious safety defect” — defined as a defect that is life-threatening or substantially impairs the consumer’s ability to control or operate the vehicle.
Minnesota joins Georgia and Virginia as one of only three states with a one-attempt safety threshold.
Examples of serious safety defects qualifying under the 1-attempt rule:
- Braking system failures — pedal sinks to floor, ABS failure, regen brake failures.
- Steering failures — loss of steering assist, steering binding, wandering.
- Engine compartment fires.
- Throttle hang or unintended acceleration.
- Fuel-system leaks.
- Phantom braking in driver-assist systems.
What’s substantial vs. trivial
- Transmission that shifts hard — qualifies.
- Engine that stalls — qualifies (often serious safety defect with 1-attempt threshold).
- Brake-pedal feel that varies — qualifies (likely 1-attempt safety defect).
- HVAC defroster failure — qualifies (critical in Minnesota winter).
- Power-window switch — typically doesn’t qualify alone.
What’s NOT a qualifying defect
- Damage from accidents.
- Damage from unauthorized modifications.
- Normal wear.
- Neglect or misuse.
- Cosmetic flaws.
- Defects caused by the consumer.
How qualifying defects interact with repair-attempt counts
A qualifying defect alone isn’t enough — the consumer must meet § 325F.665 subd. 3(b) thresholds: one attempt for serious safety defects, four attempts for other nonconformities, OR 30 cumulative business days OOS.
Minnesota cold-weather factors
Minnesota’s sub-zero winters and aggressive road salt stress vehicles:
- HVAC defroster — critical 6 months per year.
- Cold-start systems — battery, starter, ignition stress.
- Underbody corrosion — winter road salt aggressive.
- EV battery range degradation — Minnesota cold among the harshest in the country.
- Lake-effect humidity / temperature swings.
Document weather conditions when symptoms manifest.
What a court or the manufacturer IDS considers
- Clean documentation.
- Consistent symptoms across visits.
- Defect persistence after the final repair opportunity.
- Aligned with documented TSBs or recalls.
- Whether defect rises to serious safety defect under subd. 3(b)(2) — triggers 1-attempt threshold.
Related
Minnesota Lemon Law — Frequently Asked Questions
Quick answers to the most-asked questions about Minnesota's Lemon Law, CFA, and Private AG Statute.
Read → TopicMinnesota Lemon Law Cases by Manufacturer
How the Minnesota Lemon Law and CFA apply to specific manufacturers.
Read → TopicThe Minnesota Lemon Law Process
Step-by-step: how a Minnesota lemon-law case moves through repair attempts, written notice, the manufacturer's informal dispute settlement program, court action, and settlement.
Read → TopicMinnesota Lemon Law Remedies
What you can recover under Minnesota's lemon-law framework — refund, replacement, cash-and-keep, CFA damages, and § 325F.665 subd. 9 + Private AG Statute § 8.31 subd. 3a attorney-fee recovery.
Read → TopicThe Law: Minnesota Lemon Law, CFA, and Private AG Statute
The statutes behind a Minnesota lemon-law claim — § 325F.665 Lemon Law, Consumer Fraud Act, the Minnesota Private Attorney General Statute (§ 8.31 subd. 3a), Magnuson-Moss, and timing rules.
Read → TopicVehicle Types Covered by Minnesota Lemon Law
How Minnesota's Lemon Law applies to used cars, leases, EVs, motorcycles (Polaris/Indian home state!), RVs, and commercial vehicles.
Read →Think you've got a lemon?
Compare your situation to your state's requirements — and connect with a vetted lemon-law attorney for a free case review.