Massachusetts · Auto-Repair Consumer Rights
Massachusetts Auto Repair Laws & How to Sue a Mechanic
If a Massachusetts 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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Failed to properly repair the vehicle (defective workmanship)
- Massachusetts common law of negligence (breach of the mechanic's duty of reasonable care) — Common-law negligence
Possible remedy: Compensatory damages for the cost to correct the defective repair and consequential losses; no fee-shifting at common law (fees available only through the paired c. 93A claim).
- 940 CMR 5.05(8) (Attorney General Motor Vehicle Regulations); enforced under M.G.L. c. 93A, s. 2; private remedy M.G.L. c. 93A, s. 9 — Violation of the Motor Vehicle Repair Regulations / unfair or deceptive act under c. 93A
Possible remedy: Actual damages (cost to correct) or $25 minimum; not less than double and up to treble damages for a willful/knowing violation or bad-faith refusal to settle; mandatory attorney's fees and costs (M.G.L. c. 93A, s. 9).
Caused additional damage to the vehicle
- Massachusetts common law of negligence (mechanic's duty of reasonable care) — Common-law negligence
Possible remedy: Compensatory damages for the additional damage caused (and, via a paired c. 93A claim, possible multiple damages and mandatory fees).
- 940 CMR 5.05(8) (Attorney General Motor Vehicle Regulations); enforced under M.G.L. c. 93A, s. 2; private remedy M.G.L. c. 93A, s. 9 — Violation of the Motor Vehicle Repair Regulations / unfair or deceptive act under c. 93A
Possible remedy: Actual damages (cost of additional damage) or $25 minimum; not less than double and up to treble damages for a willful/knowing violation or bad-faith refusal to settle; mandatory attorney's fees and costs (M.G.L. c. 93A, s. 9).
No written estimate for labor and parts before work
- 940 CMR 5.05(3) (Attorney General Motor Vehicle Regulations); enforced as a per se unfair/deceptive act under M.G.L. c. 93A, s. 2; private remedy M.G.L. c. 93A, s. 9 — Violation of the Attorney General's Motor Vehicle Repair Regulations / unfair or deceptive act under c. 93A
Possible remedy: Actual damages or $25, whichever is greater; the court must award not less than double and may award up to treble damages for a willful/knowing violation or bad-faith refusal to settle on demand; reasonable attorney's fees and costs are mandatory for a prevailing plaintiff (M.G.L. c. 93A, s. 9).
No authorization before proceeding with repairs or further repairs
- 940 CMR 5.05(3) (Attorney General Motor Vehicle Regulations); enforced under M.G.L. c. 93A, s. 2; private remedy M.G.L. c. 93A, s. 9 — Violation of the Motor Vehicle Repair Regulations / unfair or deceptive act under c. 93A
Possible remedy: Actual damages or $25 minimum; not less than double and up to treble damages for a willful/knowing violation or bad-faith refusal to settle on demand; mandatory attorney's fees and costs for a prevailing plaintiff (M.G.L. c. 93A, s. 9).
Exceeded the authorized estimate without the consumer's consent
- 940 CMR 5.05(7) (Attorney General Motor Vehicle Regulations); enforced under M.G.L. c. 93A, s. 2; private remedy M.G.L. c. 93A, s. 9 — Violation of the Motor Vehicle Repair Regulations / unfair or deceptive act under c. 93A
Possible remedy: Actual damages (the overage) or $25 minimum; not less than double and up to treble damages for a willful/knowing violation or bad-faith refusal to settle; mandatory attorney's fees and costs (M.G.L. c. 93A, s. 9).
Failed to provide an invoice / documentation for services performed
- 940 CMR 5.05(9) (Attorney General Motor Vehicle Regulations); enforced under M.G.L. c. 93A, s. 2; private remedy M.G.L. c. 93A, s. 9 — Violation of the Motor Vehicle Repair Regulations / unfair or deceptive act under c. 93A
Possible remedy: Actual damages or $25 minimum; not less than double and up to treble damages for a willful/knowing violation or bad-faith refusal to settle; mandatory attorney's fees and costs (M.G.L. c. 93A, s. 9).
Failed to return replaced parts though requested at the work order
- 940 CMR 5.05(4)(b) (Attorney General Motor Vehicle Regulations); enforced under M.G.L. c. 93A, s. 2; private remedy M.G.L. c. 93A, s. 9 — Violation of the Motor Vehicle Repair Regulations / unfair or deceptive act under c. 93A
Possible remedy: Actual damages or $25 minimum; not less than double and up to treble damages for a willful/knowing violation or bad-faith refusal to settle; mandatory attorney's fees and costs (M.G.L. c. 93A, s. 9).
Failed to perform the agreed-upon repairs or services
- 940 CMR 5.05(8)-(9) (Attorney General Motor Vehicle Regulations); enforced under M.G.L. c. 93A, s. 2; private remedy M.G.L. c. 93A, s. 9 — Violation of the Motor Vehicle Repair Regulations / unfair or deceptive act under c. 93A
Possible remedy: Actual damages or $25 minimum; not less than double and up to treble damages for a willful/knowing violation or bad-faith refusal to settle; mandatory attorney's fees and costs (M.G.L. c. 93A, s. 9).
Failed to properly diagnose the problem
- 940 CMR 5.05(4)(c) and 5.05(8) (Attorney General Motor Vehicle Regulations); enforced under M.G.L. c. 93A, s. 2; private remedy M.G.L. c. 93A, s. 9 — Violation of the Motor Vehicle Repair Regulations / unfair or deceptive act under c. 93A
Possible remedy: Actual damages or $25 minimum; not less than double and up to treble damages for a willful/knowing violation or bad-faith refusal to settle; mandatory attorney's fees and costs (M.G.L. c. 93A, s. 9).
Misrepresented the quality or origin of the parts used
- 940 CMR 5.05(9)(f) (Attorney General Motor Vehicle Regulations); enforced under M.G.L. c. 93A, s. 2; private remedy M.G.L. c. 93A, s. 9 — Violation of the Motor Vehicle Repair Regulations / unfair or deceptive act under c. 93A
Possible remedy: Actual damages or $25 minimum; not less than double and up to treble damages for a willful/knowing violation or bad-faith refusal to settle; mandatory attorney's fees and costs (M.G.L. c. 93A, s. 9).
Made repairs that were not authorized or not needed
- 940 CMR 5.05(3) and 5.05(7) (Attorney General Motor Vehicle Regulations); enforced under M.G.L. c. 93A, s. 2; private remedy M.G.L. c. 93A, s. 9 — Violation of the Motor Vehicle Repair Regulations / unfair or deceptive act under c. 93A
Possible remedy: Actual damages or $25 minimum; not less than double and up to treble damages for a willful/knowing violation or bad-faith refusal to settle; mandatory attorney's fees and costs (M.G.L. c. 93A, s. 9).
Charged excessive fees for the services or repairs
- M.G.L. c. 93A, s. 2 (unfair or deceptive acts); private remedy M.G.L. c. 93A, s. 9; see also 940 CMR 5.05(3) (price-authorization requirement) — Unfair or deceptive act under c. 93A
Possible remedy: Actual damages (the overcharge) or $25 minimum; not less than double and up to treble damages for a willful/knowing violation or bad-faith refusal to settle; mandatory attorney's fees and costs (M.G.L. c. 93A, s. 9).
Falsely advertised services or prices
- 940 CMR 5.02 (Advertising of Motor Vehicles); enforced under M.G.L. c. 93A, s. 2; private remedy M.G.L. c. 93A, s. 9 — Violation of the Motor Vehicle Advertising Regulations / unfair or deceptive act under c. 93A
Possible remedy: Actual damages or $25 minimum; not less than double and up to treble damages for a willful/knowing violation or bad-faith refusal to settle; mandatory attorney's fees and costs (M.G.L. c. 93A, s. 9).
Bait-and-switch tactic
- 940 CMR 5.02 (Advertising of Motor Vehicles) and M.G.L. c. 93A, s. 2; private remedy M.G.L. c. 93A, s. 9 — Unfair or deceptive act under c. 93A (bait-and-switch)
Possible remedy: Actual damages or $25 minimum; not less than double and up to treble damages for a willful/knowing violation or bad-faith refusal to settle; mandatory attorney's fees and costs (M.G.L. c. 93A, s. 9).
Refused to release the vehicle without payment when the consumer disputed the work/fees
- M.G.L. c. 93A, s. 2 (unfair or deceptive acts) and 940 CMR 5.05(3) (no charge without proper authorization); private remedy M.G.L. c. 93A, s. 9; see also M.G.L. c. 255, s. 25 (garagekeeper's lien for proper charges) — Unfair or deceptive act under c. 93A (wrongful retention of vehicle)
Possible remedy: Actual damages (loss of use, costs to recover the vehicle) or $25 minimum; not less than double and up to treble damages for a willful/knowing violation or bad-faith refusal to settle; mandatory attorney's fees and costs (M.G.L. c. 93A, s. 9).
Not properly licensed/registered with the state regulatory authority
- M.G.L. c. 100A, s. 2 (Motor Vehicle Damage Repair Shops - registration required); registration enforced and unregistered operation actionable as unfair/deceptive under M.G.L. c. 93A, s. 2; private remedy M.G.L. c. 93A, s. 9 — Operating without required registration / unfair or deceptive act under c. 93A
Possible remedy: Actual damages or $25 minimum under c. 93A s. 9 (not less than double and up to treble for willful/knowing violation or bad-faith refusal to settle) plus mandatory attorney's fees; recovery may also be available against the shop's $10,000 statutory bond under c. 100A.
Failed to comply with its stated warranty to repair the vehicle
- 940 CMR 5.05(8) (good-and-workmanlike repair / no-charge correction) and M.G.L. c. 93A, s. 2; private remedy M.G.L. c. 93A, s. 9 — Breach of repair warranty / unfair or deceptive act under c. 93A
Possible remedy: Actual damages (cost to honor the warranty) or $25 minimum; not less than double and up to treble damages for a willful/knowing violation or bad-faith refusal to settle; mandatory attorney's fees and costs (M.G.L. c. 93A, s. 9).
Charged excessive storage fees while holding the vehicle
- 940 CMR 5.05(4)(a) (storage-charge disclosure) and M.G.L. c. 93A, s. 2; private remedy M.G.L. c. 93A, s. 9 — Violation of the Motor Vehicle Repair Regulations / unfair or deceptive act under c. 93A
Possible remedy: Actual damages (improper storage charges) or $25 minimum; not less than double and up to treble damages for a willful/knowing violation or bad-faith refusal to settle; mandatory attorney's fees and costs (M.G.L. c. 93A, s. 9).
Inspection station issued a fraudulent inspection certificate
- M.G.L. c. 90, s. 7W (licensing of inspection stations; revocation/suspension and penalties) and s. 7V (issuance of inspection certificates); consumer remedy via M.G.L. c. 93A, s. 2 and s. 9 — Inspection-station fraud / unfair or deceptive act under c. 93A
Possible remedy: Statutory fine of up to $1,000 and/or up to 30 days imprisonment, plus license suspension/revocation under c. 90, s. 7W; for the consumer, actual damages or $25 minimum under c. 93A s. 9, not less than double and up to treble for willful/knowing violation or bad-faith refusal to settle, plus mandatory attorney's fees.
Inspection station failed to properly perform the safety/emissions inspection
- M.G.L. c. 90, s. 7W (licensing of inspection stations; penalties and license suspension) and s. 7V (inspection certificates); consumer remedy via M.G.L. c. 93A, s. 2 and s. 9 — Improper inspection / unfair or deceptive act under c. 93A
Possible remedy: Statutory fine of up to $1,000 and/or up to 30 days imprisonment, plus license action under c. 90, s. 7W; for the consumer, actual damages or $25 minimum under c. 93A s. 9, not less than double and up to treble for willful/knowing violation or bad-faith refusal to settle, plus mandatory attorney's fees.
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Massachusetts auto-repair FAQ
What is the small claims limit in Massachusetts?
In Massachusetts, you can generally sue in small claims court for up to $7,000 without a lawyer. Auto-repair disputes commonly fall within this limit.
Can I sue a mechanic in Massachusetts?
Yes. Massachusetts 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 22 Massachusetts statutes that may apply.
Who regulates auto repair shops in Massachusetts?
Office of the Massachusetts Attorney General — Consumer Advocacy and Response Division oversees auto-repair consumer issues in Massachusetts. 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 Massachusetts?
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.