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Missouri · Article Updated May 24, 2026

Motorcycles Under Missouri Lemon Law

Why motorcycles are excluded from Missouri's Lemon Law (§ 407.560) — and the Magnuson-Moss + MMPA backstops that still apply to Harley-Davidson, Indian, BMW, Ducati.

Motorcycles are excluded from Missouri’s Lemon Law. The § 407.560 definition of “new motor vehicle” expressly excludes motorcycles, so the 1-year Rights Period, the 4-attempt / 30-working-day OOS presumption, and the mandatory § 407.577 fees are not available for motorcycle defects. Federal Magnuson-Moss and the Missouri Merchandising Practices Act (MMPA) remain your avenues.

Coverage — motorcycles are excluded

§ 407.560 defines “new motor vehicle” to exclude commercial motor vehicles, off-road vehicles, mopeds, electric bicycles, motorcycles, and recreational motor vehicles (except an RV’s chassis, engine, powertrain, and component parts). Because a motorcycle is not a “new motor vehicle” under the statute, no § 407.560 lemon-law claim is available for it.

What still applies instead

  • Magnuson-Moss Warranty Act — the federal warranty statute covers consumer products including motorcycles, with attorney-fee shifting for prevailing consumers. This is the primary route for a defective new motorcycle in Missouri.
  • MMPA — the Missouri Merchandising Practices Act reaches deceptive practices in the sale of a motorcycle, with actual damages, possible punitive damages (post-SB 591 standards), and mandatory fees.
  • UCC breach-of-warranty — a backstop where warranty terms were breached.

Common motorcycle defect patterns

  • Engine — internal failures, cam-chain tensioner issues.
  • Transmission — false neutrals, hard shifts.
  • Electrical — battery drain, ECU failures.
  • Cooling — overheating, fan failures.
  • Brakes — ABS failures, recall-worthy issues.
  • Suspension — fork seal failures, shock failures.

Brand-specific patterns

  • Harley-Davidson — Milwaukee 8 engine cam chain, Twin-Cam oil cooler. Strong MO market.
  • Indian Motorcycle (Polaris) — Thunderstroke engine issues, electrical.
  • BMW — Boxer engine failures, electrical complexity.
  • Ducati — Desmo valve clearance, electrical.
  • Triumph — recall patterns.
  • Honda Gold Wing / Africa Twin — DCT transmission issues.
  • Yamaha / Kawasaki / Suzuki — varies.

Missouri motorcycle market

  • Strong Harley-Davidson market in St. Louis and Kansas City.
  • Springfield / SW Missouri — strong cruiser market.
  • Mid-spring through fall riding season — MO winters limit year-round use.

How to pursue a motorcycle claim

Even without the Lemon Law, document the case the same way:

  1. Document repair attempts at the authorized dealer (repair orders, dates, mileage, complaint language, out-of-service days).
  2. Send a Magnuson-Moss demand to the manufacturer.
  3. File suit under Magnuson-Moss (with parallel MMPA + UCC counts) — Magnuson-Moss fee shifting makes representation feasible.

Bottom line

Missouri’s Lemon Law excludes motorcycles under § 407.560, but a defective new motorcycle is still actionable under Magnuson-Moss and the MMPA, both with fee shifting. Document attempts at the authorized dealer and pursue the federal and MMPA routes. Get a free case review.

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