Massachusetts Lemon Law (2026): How to Qualify and Get a Refund

Massachusetts lemon law, under M.G.L. Chapter 90, Section 7N1/2, protects buyers and lessees of new vehicles within the first year or 15,000 miles of delivery. A vehicle qualifies as a lemon after three or more repair attempts for the same defect or 15 or more cumulative business days out of service. When a vehicle qualifies, the consumer has the unqualified right to reject a replacement and demand a full refund.

Massachusetts has one of the strongest lemon laws in the United States. The state provides robust protections for buyers of both new and used vehicles through M.G.L. Chapter 90, Section 7N1/2 (new vehicles) and Section 7N1/4 (used vehicles). These laws give consumers real leverage when a vehicle turns out to be defective.

The law works alongside Massachusetts' powerful consumer protection statute, Chapter 93A, and the federal Magnuson-Moss Warranty Act, creating multiple paths to compensation. If your new or used vehicle has persistent mechanical problems, you have legal rights that manufacturers and dealers must respect.

What Vehicles Does the Massachusetts Lemon Law Cover?

The Massachusetts lemon law applies to new motor vehicles purchased or leased primarily for personal, family, or household purposes. The law defines "motor vehicle" broadly, but it does have specific boundaries.

Covered Vehicle Types

• Passenger automobiles, including cars, sedans, coupes, and hatchbacks
• Pickup trucks and other light-duty trucks
• Sport utility vehicles (SUVs) and crossover vehicles
• Vans and minivans used for personal purposes
• Motorcycles (note: motorcycle usage formula uses a 25,000-mile denominator instead of 100,000)
• Leased vehicles used for personal, family, or household purposes

Vehicles Not Covered

• Vehicles purchased primarily for business, commercial, or agricultural use
• Off-road vehicles not designed for highway operation
• Auto homes (motor homes), which Section 7N1/2 excludes outright
• Boats and other watercraft

The critical requirement is personal use. A truck used solely for a landscaping business would not qualify, even if it is the same model as one purchased for personal driving.

New Vehicle Lemon Law Presumption

Massachusetts law creates a legal presumption that a vehicle is a lemon when certain conditions are met. This presumption shifts the burden of proof to the manufacturer, making it easier for consumers to win their claims.

When the Lemon Presumption Applies

The presumption kicks in when problems occur within the "term of protection," which is 1 year or 15,000 miles from original delivery, whichever comes first.

Massachusetts counts business days rather than calendar days for the out-of-service requirement. This means weekends and holidays when the dealer's service department is closed do not count against the 15-day threshold. Fifteen business days translates to roughly three calendar weeks, which is more generous to consumers than the calendar-day standard used in many other states.

What Counts as a Substantial Defect?

The defect must "substantially impair" the use, market value, or safety of the vehicle. Massachusetts courts have interpreted this standard broadly in favor of consumers. Examples of qualifying defects include:

• Engine failures, persistent stalling, or unexplained loss of power
• Transmission problems that affect drivability or shifting
• Brake system malfunctions that create safety risks
• Steering defects or alignment problems that cause dangerous handling
• Electrical system failures involving critical safety components
• Persistent water leaks that cause interior damage or mold
• Air conditioning or heating failures (particularly in extreme weather)
• Safety system malfunctions, including airbags, ABS, or electronic stability control

Minor cosmetic issues generally do not qualify. However, if a cosmetic defect meaningfully reduces the vehicle's resale value, it could meet the "market value" prong of the standard.

Consumer Remedies: Refund or Replacement

When a vehicle qualifies as a lemon under Massachusetts law, the manufacturer must accept the return and either provide a full refund or offer a replacement. Critically, the consumer has the unqualified right to reject any offer of replacement and demand a refund instead. The manufacturer cannot force a consumer to accept a replacement.

Option 1: Full Refund (Vehicle Buyback)

The manufacturer must refund:

• The full contract price of the vehicle, including credits and allowances for any trade-in
• Sales tax, registration fees, and similar collateral charges
• Finance charges (interest and loan fees)
• Incidental damages, such as towing costs, rental car expenses, and other reasonable out-of-pocket costs

Usage Deduction: The manufacturer may subtract a reasonable allowance for the consumer's use of the vehicle. Under M.G.L. c.90 Section 7N1/2, the formula multiplies the total contract price by a fraction: the denominator is 100,000 (or 25,000 for motorcycles) and the numerator is the number of miles the vehicle traveled prior to the manufacturer's acceptance of its return. For example, on a $30,000 vehicle driven 5,000 miles at the time the manufacturer accepts the return, the deduction would be ($30,000 / 100,000) x 5,000 = $1,500.

Option 2: Replacement Vehicle

Instead of a refund, the consumer may choose a replacement vehicle that is:

• Identical or reasonably equivalent to the original
• Acceptable to the consumer
• Covered by all applicable manufacturer warranties

If a replacement is provided, the manufacturer must reimburse the consumer for registration transfer fees and any sales tax triggered by the replacement.

Leased Vehicle Remedies

For leased vehicles, the remedy includes a refund of all lease payments made, return of the security deposit, and termination of the lease with no further obligation. The manufacturer cannot charge early termination penalties to the consumer. The usage deduction for leased vehicles follows the same statutory formula.

State-Certified Arbitration Process

Massachusetts offers a state-certified lemon law arbitration program administered by the Office of Consumer Affairs and Business Regulation (OCABR). This program provides a relatively fast and affordable way to resolve lemon law disputes without going to court.

Key Details About Arbitration

How to File

1. Gather all repair orders, correspondence, and service records documenting the defect.
2. Submit an arbitration application to OCABR (available at mass.gov).
3. OCABR notifies the manufacturer of the filing.
4. A hearing is scheduled, typically within 40 days.
5. Both parties present evidence at the virtual hearing.
6. The arbitrator issues a written decision.

Filing Deadlines

For new vehicles, the arbitration application must be received within 18 months of the vehicle's delivery date. For used vehicles, the application must be received within 6 months of the delivery date. Missing these deadlines means losing access to the state arbitration program, though court claims may still be available.

Manufacturer Compliance

If the consumer accepts a favorable decision, the manufacturer must comply within 21 days. Failure to comply can lead to court enforcement and additional penalties, and may also support a Chapter 93A claim for willful violation.

Federal Backstop: The Magnuson-Moss Warranty Act

Massachusetts lemon law works alongside the federal Magnuson-Moss Warranty Act (15 U.S.C. 2301 et seq.), which governs written warranties on consumer products including vehicles. The federal law provides an independent basis for suit when a manufacturer breaches a written warranty. Unlike many state lemon laws, the Magnuson-Moss Act allows a prevailing consumer to recover attorney fees in federal or state court. Consumers can plead both state and federal claims simultaneously, and the federal law provides a backstop for vehicles or defects that may fall outside the state statute's exact thresholds.

Failed Inspection Law (the "Lemon Aid" Law)

Massachusetts has a separate but related protection under M.G.L. Chapter 90, Section 7N known as the "Lemon Aid" law. This law allows buyers to void a vehicle purchase if the vehicle fails its safety inspection.

How the Failed Inspection Law Works

• You have 7 days from the date of sale to have the vehicle inspected.
• If the vehicle fails inspection and estimated repair costs exceed 10% of the purchase price, you can void the sale.
• Within 14 days from the date of sale you must notify the seller that you intend to void the sale, deliver the vehicle back to the seller, and give the seller a written statement signed by an authorized agent of the inspection station explaining why the vehicle failed, along with an estimate of the repair cost. The statute does not require any particular method of notice, so keep proof of the date you gave it.
• You are entitled to a full refund of the purchase price.

This law applies to both dealer and private party sales of cars and motorcycles purchased for personal or family use, regardless of mileage or age. It does not apply to leased vehicles.

Under current law, both the 7-day inspection window and the 14-day notification deadline run from the date of sale, not the date of delivery. If signed paperwork and physical delivery happen on different days, the clock starts at signing. The pending S.2945 (2026) would change the 7-day inspection window to run from the date of delivery if enacted.

Chapter 93A Consumer Protection Claims

Massachusetts' lemon law works alongside the state's consumer protection statute, M.G.L. Chapter 93A. A lemon law violation may also qualify as an unfair or deceptive practice under Chapter 93A, opening the door to stronger remedies.

Why Chapter 93A Matters

• Multiple damages: Courts can award double or treble (triple) damages for willful or knowing violations.
• Attorney fees: Prevailing consumers recover reasonable attorney fees and court costs.
• Broader scope: Chapter 93A covers deceptive conduct that goes beyond the narrow lemon law requirements.
• Demand letter requirement: You must send a written demand letter and wait 30 days before filing a Chapter 93A lawsuit. The manufacturer's response (or lack of response) to this letter can affect the damages award.

When to Consider a Chapter 93A Claim

• The manufacturer willfully refused to honor the lemon law or comply with an arbitration decision.
• The dealer engaged in deceptive practices during the sale, such as hiding known defects or rolling back the odometer.
• The manufacturer's conduct was particularly egregious or showed a pattern of bad faith.
• You want to recover attorney fees on top of the lemon law remedies.

Many lemon law attorneys in Massachusetts work on contingency because Chapter 93A allows recovery of attorney fees for prevailing consumers.

Manufacturer Defenses

Manufacturers may raise several defenses to avoid lemon law liability. Massachusetts courts tend to interpret these defenses narrowly in favor of consumers.

The burden of proving these defenses rests entirely with the manufacturer. Courts have generally been skeptical of manufacturer claims that defects are not substantial or that the consumer caused the problem.

Used Vehicle Warranty Protections

While the new-vehicle lemon law under Section 7N1/2 gets the most attention, Massachusetts also provides strong protections for used vehicle buyers under a separate statute: M.G.L. Chapter 90, Section 7N1/4.

Required Dealer Warranties for Used Vehicles

Dealers must provide warranties on used cars, vans, and trucks sold for more than $700 with fewer than 125,000 miles. The warranty period depends on the odometer reading at the time of sale.

If the vehicle's true mileage is unknown, the warranty period is based on the vehicle's age: vehicles three years old or less receive the 90-day warranty, vehicles between three and six years old receive the 60-day warranty, and vehicles over six years old receive the 30-day warranty.

What the Used Vehicle Warranty Covers

The dealer warranty covers defects that impair the vehicle's safety or use. Dealers may not charge the consumer more than $100 total for all warranty repairs combined. If the dealer cannot fix the defect after three attempts or the vehicle is out of service for 10 or more cumulative business days within the warranty period, the consumer has the right to return the vehicle for a full refund (minus a mileage allowance of 15 cents per mile driven).

Used Vehicle Arbitration

The used vehicle arbitration deadline is 6 months from original delivery. A consumer who meets the used-vehicle lemon threshold and the dealer refuses to repurchase may file with OCABR within that window.

Used Vehicles Purchased From Private Parties

Private-party sales are not covered by the used vehicle warranty law. However, the failed inspection law (Section 7N) still applies, and consumers can return a vehicle to a private seller if it fails inspection within 7 days of the date of sale and repair costs exceed 10% of the purchase price.

Electric Vehicle Considerations

Electric vehicles (EVs) and plug-in hybrids are covered under Massachusetts' lemon law just like conventional gas-powered vehicles. However, EV technology introduces unique issues.

Common EV Defects That May Qualify

• Battery degradation beyond the manufacturer's stated parameters
• Charging system failures, including onboard charger and charge port problems
• Range that falls significantly below manufacturer specifications under normal conditions
• Electric motor or drivetrain malfunctions
• Thermal management system failures that affect battery performance or longevity
• Software glitches that impair vehicle operation or safety features
• Regenerative braking system problems
• Display or infotainment system failures that disable critical vehicle functions

EV-Specific Challenges in Lemon Law Claims

• Software updates: Manufacturers may argue that over-the-air (OTA) updates resolved the issue, but if the defect recurred after an update, that counts as a failed repair attempt.
• Battery warranty overlap: EV batteries often carry their own 8-year/100,000-mile warranty, which can create confusion about which warranty applies.
• Dealer expertise: Not all dealerships have technicians trained on EV systems, which may lead to misdiagnoses or ineffective repairs.
• Documentation: Software-related defects may require specialized diagnostic records. Save screenshots and keep a log of error messages.

Statute of Limitations and Key Deadlines

Understanding the time limits for Massachusetts lemon law claims is essential to protecting your rights.

Steps to Preserve Your Rights

• Report every defect promptly and in writing during the coverage period.
• Keep copies of all repair orders, invoices, and correspondence with the dealer and manufacturer.
• Track the exact number of days your vehicle was at the dealer for repairs.
• Consider filing for arbitration before the coverage period expires.
• Send a Chapter 93A demand letter by certified mail if you plan to pursue additional damages.

Pending Legislation: S.2945 (2026)

The Massachusetts Senate passed S.2945, "An Act Modernizing Protections for Consumers in Automobile Transactions," on February 12, 2026, by a vote of 38 to 0. As of June 2026, the bill is pending in the House of Representatives and has not been signed into law.

If enacted, S.2945 would:

• Increase the used vehicle warranty mileage cap from 125,000 to 175,000 miles
• Double the surety bond required for used car dealers from $25,000 to $50,000
• Give lessees a 21-day grace period to catch up on payments before repossession

Consumers should monitor this legislation, as it would significantly expand protections for buyers of higher-mileage used vehicles.

More Massachusetts Laws

• Massachusetts Car Accident Laws

Frequently Asked Questions

How many repair attempts trigger the Massachusetts lemon law?

Massachusetts requires three or more repair attempts for the same substantial defect, or 15 or more cumulative business days out of service for any combination of repairs, within the first year or 15,000 miles. This threshold is lower than many other states, making the Massachusetts lemon law more consumer-friendly.

Do I need a lawyer to file a Massachusetts lemon law claim?

No. You can file for state-certified arbitration through the Office of Consumer Affairs and Business Regulation (OCABR) without an attorney. The $300 arbitrator fee is refunded if you win. However, if you also pursue Chapter 93A claims or Magnuson-Moss claims for additional damages, hiring a lemon law attorney can improve your outcome, and many work on contingency because prevailing consumers recover attorney fees.

What is the difference between business days and calendar days in the Massachusetts lemon law?

Massachusetts uses business days for the out-of-service requirement. Business days are Monday through Friday when the dealer's service department is open. Weekends and holidays do not count. So 15 business days equals roughly three calendar weeks, which gives consumers more time to reach the threshold compared to states that use calendar days.

Can a manufacturer force me to accept a replacement vehicle instead of a refund?

No. Under Massachusetts law, the consumer has the unqualified right to reject any offer of replacement and demand a full refund of the purchase price, trade-in value, taxes, fees, and incidental costs, minus a reasonable usage deduction calculated from the date of acceptance of return.

Does Massachusetts have a used car lemon law?

Massachusetts has a separate used vehicle warranty law (M.G.L. c. 90, Section 7N1/4) that requires dealers to provide warranties on used vehicles sold for more than $700 with fewer than 125,000 miles. The warranty ranges from 30 to 90 days depending on mileage. Dealers cannot charge more than $100 total for warranty repairs. If the dealer cannot fix a covered defect after three attempts or the vehicle is out of service 10 or more cumulative business days, you can return it for a full refund minus 15 cents per mile driven.

What does the Magnuson-Moss Warranty Act add to my Massachusetts lemon law rights?

The federal Magnuson-Moss Warranty Act (15 U.S.C. 2301) lets you sue in state or federal court when a manufacturer breaches a written warranty, independent of whether you meet every state lemon law threshold. Its most important practical benefit is attorney fee recovery for prevailing consumers, which makes it economically viable for attorneys to take cases on contingency. You can plead state and federal claims at the same time.