Massachusetts Lemon Law, explained for vehicle owners.

Massachusetts is unusual in operating two parallel Lemon Law statutes — one for new vehicles and a completely separate framework for used vehicles. The Used Vehicle Warranty Law was the first state-mandated dealer warranty law in the United States and remains one of the most consumer-friendly. Combined with Chapter 93A, the broader Massachusetts consumer-protection statute that allows treble damages for knowing violations, the framework gives MA consumers unusually robust remedies for vehicle warranty disputes regardless of whether the vehicle is new or used.

Two Massachusetts Lemon Laws

Most states have a single Lemon Law that may or may not extend to used vehicles. Massachusetts has two distinct statutes:

• New Car Lemon Law: M.G.L. c. 90 § 7N1/2 — covers new vehicle warranty disputes
• Used Vehicle Warranty Law: M.G.L. c. 90 § 7N1/4 — requires dealers to provide written warranties on used vehicles

Both are administered by the Office of Consumer Affairs and Business Regulation (OCABR). Both allow attorney-fee shifting. Both can be combined with Chapter 93A claims for treble-damages exposure.

New Car Lemon Law (M.G.L. c. 90 § 7N1/2)

The Massachusetts New Car Lemon Law, codified at M.G.L. c. 90 § 7N1/2:

• Coverage period: 1 year or 15,000 miles, whichever first occurs
• State arbitration program: OCABR-operated, free for consumers
• Court alternative: Available without arbitration prerequisite for some claims
• Attorney-fee shifting: Recoverable for prevailing consumer

New car repair-attempt thresholds

Massachusetts has the shortest days-out-of-service threshold among major Lemon Law states (15 business days vs. 30 elsewhere) and uses a 3-attempt rule. The "after written notice" requirement means consumers must send written notice to the manufacturer demanding a final repair attempt before the third attempt counts toward the threshold. The shorter thresholds favor consumers but require careful procedural compliance.

Used Vehicle Warranty Law (M.G.L. c. 90 § 7N1/4)

The Used Vehicle Warranty Law:

• Mileage-scaled warranty periods:
  • Under 40,000 miles: 90 days or 3,750 miles, whichever first occurs
  • 40,000-79,999 miles: 60 days or 2,500 miles
  • 80,000-125,000 miles: 30 days or 1,250 miles
• Prohibits "as-is" sales by licensed Massachusetts dealers
• Defect threshold: Defects that impair use or safety must be repaired or refunded
• Mileage cap: 125,000 miles at sale
• Excluded: Private-party sales (not licensed dealer)

For broader used-car coverage analysis across all states, see our used-car coverage guide.

OCABR arbitration program

The OCABR Lemon Law program:

• Free arbitration for consumers
• Hearings typically within 45 days of filing
• Independent arbitrators
• Decisions binding on manufacturer (and binding on consumer for the New Car program)
• Consumer can appeal arbitration decision to Massachusetts Superior Court

Chapter 93A overlay

The Massachusetts Consumer Protection Act, M.G.L. c. 93A, provides broader consumer-protection remedies that overlay both Lemon Laws:

• Treble damages for knowing or willful violations
• Attorney-fee shifting to prevailing consumer
• Pre-suit demand letter required: Consumer must send 30-day demand letter before filing suit (significant procedural element)
• 4-year statute of limitations

Chapter 93A claims are common in Massachusetts vehicle warranty disputes — the demand letter requirement and treble-damages exposure together produce significant manufacturer settlement leverage.

Remedies under MA law

• Refund: Purchase price + collateral charges − usage offset
• Replacement: Comparable vehicle with usage offset
• Attorney fees: Recoverable for prevailing consumer
• Chapter 93A treble damages: Available for knowing violations

For full calculation methodology, see our buyback and replacement guide.

Filing deadlines

• MA New Car Lemon Law: 1 year or 15,000 miles from delivery
• MA Used Vehicle Warranty: 90 days, 60 days, or 30 days based on mileage tier
• Court warranty SoL: 4 years (M.G.L. c. 106 § 2-725)
• Chapter 93A SoL: 4 years from accrual
• Chapter 93A demand letter: Must be sent 30+ days before filing 93A claim

For comprehensive deadline analysis, see our statute of limitations guide.

Step-by-step MA claim process

1. Defect manifests during coverage period
2. Document repair attempts (each repair order, dates, mileage)
3. Reach repair-attempt threshold (3 same-defect after notice, 1 safety, or 15 business days)
4. Send written notice to manufacturer demanding final repair attempt
5. Send Chapter 93A demand letter if pursuing 93A claim (30-day waiting period)
6. Choose path:
   • OCABR arbitration (free, fast, binding)
   • Massachusetts Superior Court direct filing (broader discovery)
7. Hearing or trial
8. Decision and remedy execution

Major MA metros

Top Massachusetts vehicle markets:

• Boston (~4.9M metro population, largest in New England)
• Worcester (~970K metro population)
• Springfield (~700K metro population)

Boston metro dominates Massachusetts vehicle volume despite having lower per-capita ownership than vehicle-dependent metros. Suffolk County Superior Court is the most active venue for Boston-area Lemon Law cases.

Frequently asked questions

Why does Massachusetts have two separate Lemon Laws?

The New Car Lemon Law (§ 7N1/2) addresses manufacturer warranty disputes on new vehicles. The Used Vehicle Warranty Law (§ 7N1/4) addresses dealer-issued warranty obligations on used vehicles, which are not covered by manufacturer Lemon Laws in most states. The two-statute structure reflects MA's policy of treating new and used vehicle markets as distinct consumer-protection contexts.

Does the Massachusetts Used Vehicle Warranty Law apply to private-party sales?

No. The Used Vehicle Warranty Law applies only to vehicles purchased from MA-licensed dealers. Private-party sales are governed by the implied warranty of merchantability (if not disclaimed) and Chapter 93A for fraud claims. See our used-car coverage guide for broader analysis.

What is the Massachusetts Chapter 93A demand letter?

Chapter 93A requires consumers to send a 30-day demand letter to the merchant before filing a 93A claim. The letter must describe the unfair practice, identify the consumer, and demand reasonable relief. Failure to send the demand letter (or sending an inadequate letter) bars the 93A claim. This is a frequent procedural stumbling block in MA consumer-warranty cases.

Can I combine New Car Lemon Law and Chapter 93A claims?

Yes, and most Massachusetts consumer-warranty attorneys do. Combining the claims provides procedural redundancy (Lemon Law in OCABR or court, 93A in court only) and adds treble-damages exposure to the basic refund/replacement remedy.

Are there any "as-is" exceptions to the MA Used Vehicle Warranty Law?

Limited. MA-licensed dealers cannot sell used vehicles under 125,000 miles "as-is" — the mandatory minimum warranty applies. Vehicles over 125,000 miles fall outside the statute and may be sold without dealer warranty obligations. Private-party sales are not subject to the law at all.

Next steps

• Read the general Lemon Law overview for federal context
• If your vehicle is used and purchased from a MA-licensed dealer, see our used-car coverage guide
• Document repair history meticulously starting now — MA's short thresholds reward detailed records
• If pursuing Chapter 93A claim, send the 30-day demand letter early in the process
• Consider OCABR arbitration for fast resolution; consult attorney for high-value or complex cases
• If you find an error in this guide or want us to add a citation, tell us

This guide is reviewed quarterly against current Massachusetts statutes. Last full review: May 2, 2026.