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New Hampshire · Topic Updated May 26, 2026

The Law: New Hampshire Lemon Law and the Consumer Protection Act

The statutes behind a New Hampshire lemon-law claim — the Lemon Law (RSA 357-D), the New Motor Vehicle Arbitration Board, the Consumer Protection Act (RSA 358-A), and Magnuson-Moss.

New Hampshire’s lemon law — RSA 357-D — is built around a state-run arbitration program (the New Motor Vehicle Arbitration Board) that decides most disputes. Combined with the Consumer Protection Act (RSA 358-A) and federal Magnuson-Moss, it gives consumers a structured path to a refund or replacement — with treble damages available when a manufacturer defies the Board.

The three pillars

  1. New Hampshire Lemon Law — RSA 357-D:1 to :12. Consumer-elects refund or replacement; a 3-attempt / 30-business-day presumption; coverage through the warranty term plus one year; broad vehicle coverage (cars, motorcycles, OHRVs, snowmobiles; mopeds excluded); and resolution through the New Motor Vehicle Arbitration Board (RSA 357-D:5).
  2. New Hampshire Consumer Protection Act (CPA) — RSA 358-A. Private action under § 358-A:10: actual damages or $1,000 (whichever greater), doubled to trebled for a willful or knowing violation, plus mandatory attorney fees. A manufacturer’s failure to comply with a Board decision is a per se CPA violation (RSA 357-D).
  3. Federal Magnuson-Moss Warranty Act — 15 U.S.C. § 2301 et seq. Civil court; § 2310(d)(2) attorney fees; federal-court access (D.N.H. — Concord).

New Hampshire pairs state-run arbitration with a CPA that has real multiplier teeth.

Topics in this section

Why three statutes instead of one

The Lemon Law delivers refund or replacement through the Arbitration Board. The CPA adds:

  • Actual damages or a $1,000 statutory floor under § 358-A:10.
  • Double-to-treble damages for willful or knowing violations.
  • Mandatory attorney fees and costs.
  • A direct hook: ignoring a Board decision is a per se CPA violation.

Magnuson-Moss adds federal-court access (D.N.H.), § 2310(d)(2) fees, and a 4-year runway.

How they interact procedurally

  1. Document repair attempts — 3 attempts or 30 business days out of service, with same-dealer repair orders.
  2. New Motor Vehicle Arbitration Board — the consumer files; the manufacturer gets one final repair within 40 days; the Board holds a hearing within 40 days and decides within 30 (RSA 357-D:5).
  3. Civil action — appeal a Board decision to Superior Court (narrow review), or bring a CPA / Magnuson-Moss action.

Related

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