Calculating the Usage Deduction for Lemon Law Buybacks in New Hampshire

Current as of: October 18, 2026 Lemon Law & Defective Vehicles New Hampshire
If your vehicle qualifies as a lemon, the manufacturer can legally deduct a reasonable allowance for use from your refund. By New Hampshire law, this is calculated by multiplying the vehicle's mileage at the first repair attempt by the total purchase price, and then dividing that number by 100,000.

When you successfully prove that your vehicle is a lemon in cities like Concord, Manchester, or Nashua, the manufacturer is required to repurchase the car. However, you do not get to drive the vehicle for free before it broke down. State law allows the automaker to deduct a specific amount of money from your final refund to account for the miles you drove trouble-free. Understanding exactly how this mileage deduction formula works in New Hampshire will prevent manufacturers from overcharging you during the buyback settlement.

The NH Mileage Formula Explained

New Hampshire takes the guesswork out of the usage deduction by providing a strict mathematical formula. Under N.H. Rev. Stat. § 357-D:3, the reasonable allowance for use is calculated as follows:

(Mileage at the First Repair Attempt × Purchase Price) ÷ 100,000 = Usage Deduction

Here is exactly how these variables are defined:

  • Mileage at the First Repair Attempt: This is the number on your odometer the very first time you brought the car to an authorized dealer complaining of the specific defect that caused it to be a lemon. It is not the current mileage of the car.
  • Purchase Price: The total cash price of the vehicle, including any options, accessories, and dealer prep fees.
  • 100,000: The standard life expectancy baseline set by New Hampshire law for this equation.

For example, if you purchased a truck for $40,000 and you first took it in for transmission repairs at 5,000 miles, the calculation is: (5,000 × 40,000) ÷ 100,000 = $2,000. Your refund would be the purchase price minus this $2,000 deduction.

Step-by-Step Process for Calculating Your Refund

To ensure you get every dollar you deserve, follow these steps when preparing your claim for the arbitration board.

Step 1: Gathering Documents

Locate your original buyer's order or lease agreement. You need the exact purchase price figure. Next, dig out the very first repair invoice related to your ongoing defect.

Step 2: Locating the Exact Mileage

Look at the top of that first repair invoice. The service advisor logs the vehicle's Mileage In. This is the official number you will use for the statutory formula.

Step 3: Applying the Statutory Formula

Plug the numbers into the New Hampshire formula. If the manufacturer tries to use a different mileage number (such as the mileage at the final repair attempt), you must object.

Step 4: Sending the Demand

If you disagree with the manufacturer's settlement offer, you can formally submit your dispute by filing a Form CPMVA-2, New Hampshire, New Motor Vehicle Arbitration Board, Demand for Arbitration with the New Hampshire New Motor Vehicle Arbitration Board, Concord. If the matter heads to litigation, it may end up in a venue like the Rockingham County Superior Court, Brentwood. Browse our directory to find a local New Hampshire attorney to guide you.

Disputing Manufacturer Calculations

Automakers notorious for aggressively protecting their bottom line sometimes try to manipulate the deduction. They might argue that the defect wasn't officially diagnosed on the first visit, so they want to use the mileage from the third visit. This can cost you thousands of dollars. The law clearly states the deduction is based on the date of the first attempt at repairing the vehicle for the nonconformity. You must stand firm on your initial repair order documentation.

How Leased Vehicle Mileage is Treated

If you leased your vehicle, the refund process is slightly different, but the mileage deduction concept remains identical. The manufacturer will refund your down payment, all monthly payments made, and any early termination costs or penalties. They will also pay off the remaining balance to the leasing company. The usage deduction will be subtracted from the total cash refund owed directly to you, using the capitalized cost of the lease as the purchase price equivalent.

How Much Does it Cost to File in NH?

To take your dispute before the New Hampshire Motor Vehicle Arbitration Board, there is a minor $50 filing fee. If you require legal assistance to combat a manufacturer's unfair mileage deduction, many consumer protection lawyers take these cases without requiring upfront fees, seeking their compensation directly from the automaker under statutory fee-shifting provisions.

How Long Does the Process Take?

If you and the manufacturer agree on the numbers, a buyback check can be processed in roughly 30 to 60 days. If you must go through the arbitration board to resolve a dispute over the mileage calculation, under N.H. Rev. Stat. § 357-D:4, IV a hearing must be scheduled and held within 40 days of receipt of your complaint, and the final payout may take 60 to 90 days total.

Frequently Asked Questions (FAQ)

Do I pay the mileage deduction if I choose a replacement vehicle?

In New Hampshire, if you opt for a replacement vehicle instead of a cash refund, the reasonable allowance for use deduction does not apply.

What if I bought the car used but it is still under warranty?

The formula remains the same, but the purchase price used is the price you paid for the used car, and the mileage is calculated from when you first brought it in for repair.

Can the manufacturer deduct for vehicle damage?

Yes. If the vehicle has body damage, broken glass, or interior tears that go beyond normal wear and tear and were not caused by the defect, the manufacturer can legally deduct the cost to repair that damage.

Will I get my sales tax and registration fees back?

New Hampshire does not impose a general sales tax on vehicle purchases, so there is no sales tax to refund. However, under N.H. Rev. Stat. § 357-D:3, V, you are legally entitled to a full refund of official fees, including title fees, registration fees, and municipal permit fees, minus the statutory usage deduction.


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