If you are pursuing a lemon law claim in California, one number is going to come up early and often: the mileage offset. This is the amount deducted from what the manufacturer owes you when your vehicle qualifies for a buyback under the Song-Beverly Consumer Warranty Act. Many consumers worry it is something the manufacturer can manipulate to reduce their recovery. It is not. The mileage offset is fixed by California statute, calculated the same way in every Song-Beverly express warranty repurchase claim, and understanding it before you get deep into the process puts you in a much better position.
What Is the Mileage Offset?
When a manufacturer is required to repurchase your vehicle under Song-Beverly, they must refund what you paid or still owe for the vehicle, but that repurchase amount is reduced by the mileage offset. The mileage offset accounts for the use you got out of the vehicle before the qualifying defect was first brought in for repair. Think of it as a usage credit subtracted from the total repurchase amount, one the manufacturer is entitled to, but one they cannot inflate or manipulate.
The Formula Written Out in Plain English
California Civil Code Section 1793.2(d)(2)(C) states the formula precisely:
Mileage Offset = Cash Price x (Mileage When Defect Was First Reported minus Mileage at Purchase) divided by 120,000
Here is how it works with real numbers. Cash price of $40,000. Odometer at delivery: 5 miles. Odometer when defect was first reported: 12,005 miles.
12,005 minus 5 = 12,000 miles driven before the defect was reported. 12,000 divided by 120,000 = 0.10 0.10 x $40,000 = $4,000 mileage offset
That $4,000 is deducted from the manufacturer’s total repurchase obligation. It is not a check you write. It simply reduces what they owe you before you collect the rest.
Breaking Down Each Variable
Cash Price: The actual purchase price of the vehicle, including charges for transportation and manufacturer-installed options, but excluding taxes, registration fees, dealer-installed accessories, extended warranties, and any other non-manufacturer add-ons. It is not your out-the-door total. This definition comes directly from Civil Code Section 1793.2(d)(2)(B) and (C).
Mileage When Defect Was First Reported: The odometer reading the day you first brought the vehicle in for repair of the qualifying defect, not today’s mileage, and not the mileage at settlement. Your repair orders will show this number.
Mileage at Purchase: The odometer reading when you took delivery. For most new vehicles this is a small number, often single digits or low hundreds.
120,000: The fixed statutory divisor established by California law. It does not change based on vehicle type, manufacturer, price point, or how the case is litigated. It is 120,000 in every Song-Beverly repurchase calculation, no exceptions.
This Number Is Not Up for Debate
California Civil Code Section 1793.2(d)(2)(C) fixes the formula by statute. The manufacturer cannot propose a different divisor, a different cash price definition, or any alternative methodology. Defense counsel cannot argue for a higher offset at mediation. Every lemon law attorney in California, on both sides, is working from the exact same calculation. The only variables are the ones specific to your vehicle and your timeline. This predictability is a meaningful consumer protection, and it removes an entire category of dispute from the table.
How the Offset Affects Your Total Recovery
The mileage offset is calculated using only the vehicle’s cash price. Taxes, fees, and loan interest are not part of the offset formula. The manufacturer’s full repurchase obligation under Song-Beverly is broader than the cash price alone and typically includes:
- Your down payment
- All monthly loan or lease payments made
- The remaining loan or lease balance
- Sales tax, license fees, and registration fees paid at purchase
- Qualifying incidental damages such as repair costs, towing, and rental car expenses actually incurred because of the defect
Because the repurchase obligation includes taxes, fees, and financing costs, the gross amount owed to you will generally exceed the vehicle’s cash price. Using the example above, if the cash price was $40,000 but taxes, fees, and total payments bring the full repurchase obligation to $44,500, the mileage offset of $4,000 is subtracted from that $44,500, leaving the manufacturer owing $40,500, with any remaining loan balance paid directly to your lender as part of that transaction.
One important distinction under the standard Song-Beverly formula: the repurchase obligation covers the vehicle itself and manufacturer-installed items, but may exclude items added by the dealer or buyer. This means dealer-installed add-ons such as service contracts, alarm systems, paint protection products, and GAP insurance have historically not been recoverable in a standard buyback, even when they were rolled into your financing.
That picture changes for consumers whose vehicle’s manufacturer has opted into California’s updated 2025 lemon law procedures under AB 1755 and SB 26 (Code of Civil Procedure Sections 871.20 through 871.30). Under those rules, CCP Section 871.27(b) allows optional equipment, dealer-installed accessories, service contracts, extended warranties, debt-cancellation agreements, and GAP financing to be recoverable as damages. Whether the new framework applies to your claim depends on whether your manufacturer has elected to participate, an answer that is not always easy to find on your own. More on that in our companion article on the statute of limitations and the 2025 opt-in rules.
Other Remedies You May Be Entitled To
The repurchase amount is not always the full picture. If the manufacturer’s failure to comply was willful, California Civil Code Section 1794(c) allows a civil penalty of up to two times your actual damages. California Civil Code Section 1794(d) also entitles prevailing consumers to attorney’s fees and costs, which is why most lemon law attorneys take these cases on contingency. The law puts the cost of the legal fight on the manufacturer when consumers win.
Do Not Wait: The Statute of Limitations
Every lemon law claim has a filing deadline, and the deadline that applies to your case depends on whether your vehicle’s manufacturer has opted into California’s updated 2025 lemon law procedures under AB 1755 and SB 26 (Code of Civil Procedure Sections 871.20 through 871.30). Under the standard rules, a four-year window generally applies from when the claim arose. Under the 2025 opt-in framework, a six-year cap from original vehicle delivery replaces that standard, and it can be shorter than consumers expect depending on when the warranty expires. We cover this in detail in a separate article: How Long Do You Have to File a California Lemon Law Claim? Do not assume you have time to spare. A free consultation with a lemon law attorney can confirm which deadline applies to your situation before it matters.
Common Questions About the Mileage Offset
Q: Does the mileage offset come out of my pocket? A: No. It is deducted from the gross repurchase amount the manufacturer owes you, not a separate payment you make.
Q: Can the manufacturer argue for a higher offset or a different formula? A: No. The formula is fixed by California Civil Code Section 1793.2(d)(2)(C). There is no alternative methodology available to the defense.
Q: What if I drove a lot of miles before reporting the defect? A: More pre-report miles increases the offset and reduces your net recovery, but it does not disqualify your claim. Eligibility depends on the number and nature of repair attempts and days out of service, not mileage alone.
Q: What if I leased instead of purchased? A: Leased vehicles can qualify under Song-Beverly. The mileage offset formula still applies, but the overall recovery calculation differs for leases. An attorney can walk through the specifics of your agreement.
Q: Is there a deadline to file? A: Yes, and which deadline applies depends on whether your manufacturer has opted into California’s 2025 lemon law rules. See our full article: How Long Do You Have to File a California Lemon Law Claim?
Talk to a California Lemon Law Attorney
Knowing the formula is a strong start, but whether your vehicle qualifies, which repair attempts count, which rules apply to your manufacturer, and how to handle a manufacturer that is not cooperating all require a closer look at your specific situation. The team at AutoLawFirm.com can review your case at no cost and walk you through exactly what you may be owed, including which statute of limitations applies and whether you are still within the window to act.
If your vehicle has been back to the shop more than once for the same problem, do not wait. Reach out at https://autolawfirm.com/contact/ to get started.
This article is general information only and does not constitute legal advice. Consult a qualified California lemon law attorney about your specific situation.