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Missouri · Article Updated May 24, 2026

Hyundai Lemon Law Cases in Missouri

How Missouri Lemon Law (§ 407.560) applies to Hyundai — Theta-II recall, Tucson, Santa Fe, Ioniq 5/6.

Hyundai has growing Missouri market share. Missouri Lemon Law applies fully.

Common Hyundai defect patterns

  • Theta-II 2.0L / 2.4L engine — Sonata, Santa Fe, Tucson. Recall + extended warranty.
  • Ioniq 5 / Ioniq 6 ICCU — Integrated Charging Control Unit failure (recall).
  • Kona EV / Kona ICE — separate defect patterns.
  • Palisade — infotainment, fuel-system issues.
  • Genesis G70 / G80 / G90 — generally reliable.

Hyundai IDS / BBB Auto Line

Hyundai uses BBB Auto Line as certified IDS.

MMPA in Hyundai cases

  • Theta-II disclosure — known issues.
  • Kia Boys / TPMS — anti-theft deficiency.
  • Ioniq 5 charging — promised speeds vs. real-world.

Post-SB 591 ascertainable loss specificity required.

Bottom line

Hyundai is fully covered under Missouri Lemon Law.

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