California Lemon Law Mileage Offset Calculation

The Statutory Formula

Civil Code § 1793.2(d)(2)(C):

“When the manufacturer replaces the new motor vehicle… or makes restitution to the buyer pursuant to this paragraph, the buyer shall be required to pay an amount directly to the manufacturer or have an amount deducted from the price paid by the manufacturer to the buyer, equal to the actual price paid or payable by the buyer multiplied by a fraction having as its denominator one hundred twenty thousand (120,000) and having as its numerator the number of miles traveled by the new motor vehicle prior to the time the buyer first delivered the vehicle to the manufacturer or distributor, or its authorized service and repair facility, for correction of the problem that gave rise to the nonconformity.”

Restated:

Offset = Price × (Miles Before First Repair ÷ 120,000)

What “First Repair Attempt” Means

The numerator is the odometer reading at the first repair attempt for the nonconformity. Not:

• The odometer at buyback (often manufacturers’ preferred number — wrong)
• The odometer at the last repair attempt
• The odometer at notice or demand

It is the first time the consumer delivered the vehicle to the manufacturer or an authorized service facility for the defect that gave rise to the lemon claim. If the consumer reported the same defect on a different visit but the dealer’s repair order described it differently, identifying the “first” attempt requires careful reading of the repair-order record.

Worked Examples

Example 1: Low pre-defect mileage

• Purchase price: $45,000
• First repair attempt for transmission defect: 3,800 miles
• Mileage offset: $45,000 × (3,800 ÷ 120,000) = $45,000 × 0.0317 = $1,425

The consumer’s buyback is reduced by $1,425 — a relatively minor deduction.

Example 2: High pre-defect mileage

• Purchase price: $45,000
• First repair attempt: 24,500 miles (consumer drove for over a year before defect manifested)
• Mileage offset: $45,000 × (24,500 ÷ 120,000) = $45,000 × 0.2042 = $9,188

The consumer’s buyback is reduced by $9,188. In this case, the consumer might consider a replacement instead (no mileage offset on replacement).

Example 3: Disputed “first” attempt

• Visit 1 (5,000 mi): consumer complained of “intermittent rough idle”
• Visit 2 (8,500 mi): consumer complained of “engine misfire”
• Visit 3 (12,000 mi): consumer complained of “engine stall”

The manufacturer might argue the “stall” defect first appeared at visit 3 (12,000 mi) → offset of $45,000 × 12,000 / 120,000 = $4,500. The consumer would argue all three visits were the same powertrain nonconformity, first reported at visit 1 (5,000 mi) → offset of $45,000 × 5,000 / 120,000 = $1,875. The difference is $2,625.

This is the kind of dispute that requires legal representation. Repair-order language is the evidence; the consumer needs counsel who reads repair orders for a living.

Why the Offset Math Matters Strategically

The mileage offset is the single most negotiated number in lemon law settlements. Two strategic implications:

1. If pre-defect mileage is low, buyback is excellent. The consumer recovers nearly the full purchase price plus collateral charges.
2. If pre-defect mileage is high, consider replacement. Replacement carries no offset; the consumer drove the lemon for free.

Modeling both remedies before electing is part of standard California lemon law representation.

Common Manufacturer Errors

• Using the wrong odometer reading. A later repair attempt rather than the first.
• Using purchase price net of trade. The formula uses gross purchase price, including any amount financed for negative equity on trade-in.
• Inflating the price (lessee error). For leases, the offset uses the cash value (capitalized cost) of the leased vehicle, not the total of lease payments.
• Applying the offset twice. Some manufacturers attempt to reduce both purchase price and collateral charges by the offset — only purchase price is reduced.

Used Vehicle Considerations

For a used vehicle covered by the manufacturer’s original warranty, the offset is calculated using the actual price paid by the current consumer (the used purchase price), not the original new-vehicle MSRP. The “miles before first repair attempt” similarly counts only miles driven by the current consumer.

See used vehicles under California Lemon Law and CPO.