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Illinois · Article Updated May 23, 2026

Hyundai Lemon Law Cases in Illinois

Hyundai's IL Lemon Law cases focus on Theta II engine failures, transmission issues, and EV-specific cases.

Hyundai vehicles are a substantial share of IL Lemon Law caseload. Hyundai shares platforms with sister brand Kia.

Common Hyundai defect categories

Theta II engine failures

2.0L and 2.4L 4-cylinder engines (2011-2019 Sonata, Santa Fe, Tucson) — one of the most-litigated engine failures.

Hyundai issued multiple recalls. Affected IL buyers brought Illinois Lemon Law claims plus ICFA actions.

KSDS interactions

KSDS triggering produces repeated repair visits.

Transmission issues

8-speed automatic, DCT in Veloster N/Elantra N, CVT in certain hybrids.

Ioniq 5, Ioniq 6, Kona Electric EV issues

Battery management, charging system failures, drive system, software bugs.

Genesis luxury models

G70, G80, G90, GV60, GV70 EV, GV80.

Hybrid system issues

Sonata Hybrid, Tucson Hybrid, Santa Fe Hybrid.

Hyundai’s settlement profile

Hyundai Motor America settles most IL cases via BBB Auto Line or court mediation.

Settlement values

Hyundai refunds in IL typically range:

  • Accent, Venue: $20,000-$30,000
  • Elantra, Kona: $25,000-$40,000+
  • Sonata, Veloster: $30,000-$45,000+
  • Tucson, Santa Cruz: $30,000-$50,000+
  • Santa Fe, Palisade: $40,000-$65,000+
  • Ioniq 5, Ioniq 6, Kona Electric: $40,000-$70,000+
  • Genesis G70, G80, G90: $50,000-$120,000+
  • Genesis GV60, GV70, GV80: $50,000-$110,000+

What you should do

  1. Pull every repair order and recall notice.
  2. For Theta II cases, save KSDS-related visits.
  3. Send § 380/3 notice.
  4. Get a free case review.

Related

Think you've got a lemon?

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