New Hampshire · Auto-Repair Consumer Rights
New Hampshire Auto Repair Laws & How to Sue a Mechanic
If a New Hampshire shop overcharged you, did unauthorized work, or botched a repair, state law is on your side. Here are the statutes that protect you, your small-claims limit, and free tools to get a refund or fix — no lawyer needed.
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No written estimate for labor and parts before work
- New Hampshire Motor Vehicle Repair Law, RSA 358-D:2 (When Written Estimate Required); enforced via RSA 358-D:12 and the Consumer Protection Act private-remedy section RSA 358-A:10 — Violation of the Motor Vehicle Repair Law (per se unfair/deceptive act under RSA 358-A:2)
Possible remedy: Actual damages or $1,000 whichever is greater under RSA 358-A:10; mandatory 2x-3x (not less than double, up to treble) where the violation is willful or knowing; costs and reasonable attorney's fees to a prevailing plaintiff; under RSA 358-D:12, II the facility forfeits payment for non-compliant work.
No authorization before proceeding with repairs or further repairs
- New Hampshire Motor Vehicle Repair Law, RSA 358-D:3 (Authorization to Proceed); enforced via RSA 358-D:12 and the Consumer Protection Act private-remedy section RSA 358-A:10 — Violation of the Motor Vehicle Repair Law (per se unfair/deceptive act under RSA 358-A:2)
Possible remedy: Forfeiture of all payment for unauthorized work under RSA 358-D:12, II; actual damages or $1,000 minimum, mandatory 2x-3x for willful/knowing conduct, plus costs and attorney's fees under RSA 358-A:10.
Exceeded the authorized estimate without the consumer's consent
- New Hampshire Motor Vehicle Repair Law, RSA 358-D:5 (Effect of Exceeding the Estimate) and RSA 358-D:4 (Additional Service or Repair Work); enforced via RSA 358-D:12 and the Consumer Protection Act private-remedy section RSA 358-A:10 — Violation of the Motor Vehicle Repair Law (per se unfair/deceptive act under RSA 358-A:2)
Possible remedy: Customer not liable for unauthorized overage above 10 percent; forfeiture of payment for non-compliant work under RSA 358-D:12, II; actual damages or $1,000 minimum, mandatory 2x-3x for willful/knowing conduct, plus costs and attorney's fees under RSA 358-A:10.
Failed to provide an invoice / documentation for services performed
- New Hampshire Motor Vehicle Repair Law, RSA 358-D:10 (Required Work Invoice); enforced via RSA 358-D:12 and the Consumer Protection Act private-remedy section RSA 358-A:10 — Violation of the Motor Vehicle Repair Law (per se unfair/deceptive act under RSA 358-A:2)
Possible remedy: Forfeiture of payment for non-compliant work under RSA 358-D:12, II; actual damages or $1,000 minimum, mandatory 2x-3x for willful/knowing conduct, plus costs and attorney's fees under RSA 358-A:10.
Failed to return replaced parts though requested at the work order
- New Hampshire Motor Vehicle Repair Law, RSA 358-D:9 (Return of Replaced Parts); enforced via RSA 358-D:12 and the Consumer Protection Act private-remedy section RSA 358-A:10 — Violation of the Motor Vehicle Repair Law (per se unfair/deceptive act under RSA 358-A:2)
Possible remedy: Forfeiture of payment for non-compliant work under RSA 358-D:12, II; actual damages or $1,000 minimum, mandatory 2x-3x for willful/knowing conduct, plus costs and attorney's fees under RSA 358-A:10.
Failed to properly repair the vehicle (defective workmanship)
- New Hampshire Consumer Protection Act, RSA 358-A:2; private remedy RSA 358-A:10 — Unfair or deceptive act or practice (and common-law breach of contract / negligent performance of services)
Possible remedy: Actual damages or $1,000 whichever is greater; mandatory 2x-3x for willful or knowing violations; costs and reasonable attorney's fees under RSA 358-A:10.
Failed to perform the agreed-upon repairs or services
- New Hampshire Consumer Protection Act, RSA 358-A:2; private remedy RSA 358-A:10 — Unfair or deceptive act or practice (and common-law breach of contract)
Possible remedy: Actual damages or $1,000 whichever is greater; mandatory 2x-3x for willful or knowing violations; costs and attorney's fees under RSA 358-A:10; contract damages at common law.
Caused additional damage to the vehicle
- New Hampshire common law (negligence); cumulative with New Hampshire Consumer Protection Act, RSA 358-A:2 and private remedy RSA 358-A:10 — Common-law negligence (and unfair/deceptive practice under RSA 358-A)
Possible remedy: Compensatory damages for repair cost and diminished value at common law; enhanced compensatory damages where conduct is wanton/malicious; actual damages or $1,000 minimum plus mandatory 2x-3x and attorney's fees under RSA 358-A:10 where deceptive.
Failed to properly diagnose the problem
- New Hampshire Consumer Protection Act, RSA 358-A:2; private remedy RSA 358-A:10 — Unfair or deceptive act or practice (and common-law negligent performance of services)
Possible remedy: Actual damages or $1,000 whichever is greater; mandatory 2x-3x for willful or knowing violations; costs and attorney's fees under RSA 358-A:10.
Misrepresented the quality or origin of the parts used
- New Hampshire Consumer Protection Act, RSA 358-A:2, VI and VII; private remedy RSA 358-A:10 — Unfair or deceptive act or practice
Possible remedy: Actual damages or $1,000 whichever is greater; mandatory 2x-3x for willful or knowing violations; costs and attorney's fees under RSA 358-A:10.
Made repairs that were not authorized or not needed
- New Hampshire Motor Vehicle Repair Law, RSA 358-D:3 and RSA 358-D:4; enforced via RSA 358-D:12 and the Consumer Protection Act private-remedy section RSA 358-A:10 — Violation of the Motor Vehicle Repair Law (per se unfair/deceptive act under RSA 358-A:2)
Possible remedy: Forfeiture of all payment for unauthorized work under RSA 358-D:12, II; actual damages or $1,000 minimum, mandatory 2x-3x for willful/knowing conduct, plus costs and attorney's fees under RSA 358-A:10.
Charged excessive fees for the services or repairs
- New Hampshire Consumer Protection Act, RSA 358-A:2; private remedy RSA 358-A:10; cumulative with RSA 358-D:5 and RSA 358-D:12 — Unfair or deceptive act or practice
Possible remedy: Refund/credit of the excess; actual damages or $1,000 whichever is greater; mandatory 2x-3x for willful or knowing violations; costs and attorney's fees under RSA 358-A:10.
Falsely advertised services or prices
- New Hampshire Consumer Protection Act, RSA 358-A:2, VII, IX and XI; private remedy RSA 358-A:10 — Unfair or deceptive act or practice (false advertising)
Possible remedy: Actual damages or $1,000 whichever is greater; mandatory 2x-3x for willful or knowing violations; costs and attorney's fees under RSA 358-A:10.
Bait-and-switch tactic
- New Hampshire Consumer Protection Act, RSA 358-A:2, IX and X; private remedy RSA 358-A:10 — Unfair or deceptive act or practice (bait and switch)
Possible remedy: Actual damages or $1,000 whichever is greater; mandatory 2x-3x for willful or knowing violations; costs and attorney's fees under RSA 358-A:10.
Refused to release the vehicle without payment when the consumer disputed the work/fees
- New Hampshire Motor Vehicle Repair Law, RSA 358-D:12 (no payment owed for non-compliant work); New Hampshire mechanic's lien for labor, RSA 450:2; Consumer Protection Act private remedy RSA 358-A:10 — Wrongful retention / improper lien assertion (and unfair/deceptive practice under RSA 358-A)
Possible remedy: Release of the vehicle; damages for wrongful detention and loss of use; actual damages or $1,000 minimum, mandatory 2x-3x for willful/knowing conduct, plus costs and attorney's fees under RSA 358-A:10.
Not properly licensed/registered with the state regulatory authority
- New Hampshire Motor Vehicle Repair Law, RSA 358-D:1 (Definitions) and RSA 358-D:11 (Notice Requirements); Consumer Protection Act RSA 358-A:2 and private remedy RSA 358-A:10 — Violation of the Motor Vehicle Repair Law / unfair or deceptive act
Possible remedy: Actual damages or $1,000 whichever is greater; mandatory 2x-3x for willful or knowing violations; costs and attorney's fees under RSA 358-A:10; forfeiture of payment for non-compliant work under RSA 358-D:12, II.
Failed to comply with its stated warranty to repair the vehicle
- New Hampshire Motor Vehicle Repair Law, RSA 358-D:10 (invoice must state guarantee terms); Consumer Protection Act RSA 358-A:2; private remedy RSA 358-A:10 — Breach of express warranty / unfair or deceptive act
Possible remedy: Cost to complete or correct the repair; actual damages or $1,000 minimum, mandatory 2x-3x for willful/knowing conduct, plus costs and attorney's fees under RSA 358-A:10.
Charged excessive storage fees while holding the vehicle
- New Hampshire storage lien, RSA 450:1; cumulative with Consumer Protection Act RSA 358-A:2 and private remedy RSA 358-A:10 — Improper lien charge / unfair or deceptive act
Possible remedy: Disallowance of improper storage charges; actual damages or $1,000 minimum, mandatory 2x-3x for willful/knowing conduct, plus costs and attorney's fees under RSA 358-A:10.
Inspection station issued a fraudulent inspection certificate
- New Hampshire RSA 262:16 (Counterfeit, Unauthorized or Forged Stickers or Decals); cumulative consumer remedy under Consumer Protection Act RSA 358-A:2 and RSA 358-A:10 — Issuance of fraudulent inspection sticker (criminal) / unfair or deceptive act for consumer recovery
Possible remedy: Criminal penalties under RSA 262:16; for the consumer, actual damages or $1,000 minimum, mandatory 2x-3x for willful/knowing conduct, plus costs and attorney's fees under RSA 358-A:10.
Inspection station failed to properly perform the safety/emissions inspection
- New Hampshire Consumer Protection Act, RSA 358-A:2; private remedy RSA 358-A:10 — Unfair or deceptive act or practice
Possible remedy: Refund of the inspection fee and consequential damages; actual damages or $1,000 minimum, mandatory 2x-3x for willful/knowing conduct, plus costs and attorney's fees under RSA 358-A:10.
Free tools for your New Hampshire dispute
New Hampshire auto-repair FAQ
What is the small claims limit in New Hampshire?
In New Hampshire, you can generally sue in small claims court for up to $10,000 without a lawyer. Auto-repair disputes commonly fall within this limit.
Can I sue a mechanic in New Hampshire?
Yes. New Hampshire consumer-protection and auto-repair laws give you grounds to recover for overcharges, unauthorized work, and faulty repairs — often starting with a demand letter before small claims court. We track 20 New Hampshire statutes that may apply.
Who regulates auto repair shops in New Hampshire?
Consumer Protection & Antitrust Bureau, New Hampshire Department of Justice oversees auto-repair consumer issues in New Hampshire. You can file a complaint with them in addition to (or instead of) sending a demand letter.
Do I need a lawyer to send a demand letter in New Hampshire?
No. A clear, statute-citing demand letter is something you can send yourself — it is often what gets a shop to refund or fix the problem before court.
This page is general information, not legal advice, and is not a substitute for a licensed attorney. Court rules, dollar limits, and filing fees vary by county — confirm yours before filing.