EV Lemon Law Buyback Calculator
Estimate your statutory repurchase math by state: gross refund basis, mileage offset, net refund, loan payoff, and net cash to consumer. California rule verified against statute; other state rules labeled as unverified general estimates.
Your estimate
Enter your state, selling price, and first-repair miles to see an estimate.
Primary result
—
Net cash to consumer
—
Calculated estimate
Gross refund basis
—
Mileage offset
—
Net refund before loan
—
Loan payoff
—
Illustrative cash-and-keep range
—
ILLUSTRATIVE MODELED RANGE ONLY — placeholder methodology (10%–25% of calculated net refund). Not observed market data, not a statutory entitlement, not legal advice.
Sensitivity: what changes your number most
| Scenario | Net cash to consumer |
|---|
What this calculator estimates (and what it does not)
This calculator estimates the statutory repurchase math used under state lemon law: a gross refund basis, a mileage-offset deduction, a net refund, a loan payoff, and a net cash figure. It does not determine whether your EV qualifies as a lemon, does not model civil penalties or lease residuals in this phase, and does not provide legal advice.
California uses a verified statutory formula. Other states are shown with a clear “state rule not verified” notice and a general estimate that uses the 120,000-mile divisor from California statute as a reference. Your state may use a different divisor, a capped deduction, or no formula.
How the EV lemon law buyback calculation works
Gross refund basis
The refund basis is the starting number the offset is subtracted from. In California, the statute includes the purchase price, collateral charges such as taxes and registration, and incidental damages. Enter taxes/fees and incidental costs separately so the basis is transparent.
Mileage offset
The offset is a “reasonable allowance for use.” The formula multiplies the purchase price by the qualifying miles divided by the state divisor. California uses 120,000. The qualifying miles are the miles at first repair in states that freeze the offset at the first repair attempt; other states count to settlement. This distinction changes the deduction by thousands of dollars on the same vehicle.
Net refund and loan payoff
The net refund is the gross refund basis minus the offset. If the EV is financed, the lender is typically paid first and the remainder goes to the consumer. If the loan balance exceeds the net refund, you may face a deficiency rather than receive cash.
EV-specific considerations in a lemon law buyback
EV lemon claims frequently involve battery range loss, charging failures, and propulsion or software-driven defects. This calculator acknowledges those defect types but does not determine qualification — that is a legal determination.
Two separate clocks
The lemon-law presumption window and the EV battery warranty window are different clocks. California’s lemon-law presumption is generally 18 months or 18,000 miles, while high-voltage battery warranties commonly run far longer. A longer battery warranty does not automatically extend lemon-law eligibility. Document the first repair attempt and keep repair orders.
Incidental costs specific to EV ownership
The checklist above includes towing, rental/rideshare, charging-network costs during repair, home-charger remediation, and storage. Keep receipts; incidental costs generally need documentation.
State-basis differences that change your number
| State | Status | Divisor | Offset basis | Citation |
|---|---|---|---|---|
| California | Verified | 120,000 | First repair | Cal. Civ. Code § 1793.2(d)(2) |
| All other states | Not verified | Varies | Varies | Verify with your state statute |
The visible SERP includes a strong 50-state calculator with state-rule transparency. ElectVehicles does not repeat unverified state rules as if they were verified. Until each state’s statute is independently verified and dated, the tool labels non-California results as general estimates and recommends verification.
Buyback vs. replacement vs. cash-and-keep
- Buyback / repurchase: you return the vehicle and receive the statutory refund math shown above.
- Replacement: the manufacturer provides a comparable replacement vehicle; the math differs and is not modeled here.
- Cash-and-keep: you keep the vehicle and accept a cash settlement for the defect. This is often a negotiated remedy, not a statutory formula. The range shown is an illustrative modeled range, not an entitlement.
Worked example (California)
Inputs: California; selling price $50,000; taxes/fees $4,500; incidental costs $1,200; first-repair miles 6,000; loan balance $32,000.
- Gross refund basis = $50,000 + $4,500 + $1,200 = $55,700
- Mileage offset = $50,000 × (6,000 ÷ 120,000) = $2,500
- Net refund = $55,700 − $2,500 = $53,200
- Loan payoff = $32,000
- Net cash to consumer = $53,200 − $32,000 = $21,200
Labeled a calculated estimate. Not a legal entitlement or observed outcome.
Methodology, assumptions, and limitations
- Statutory repurchase math only; qualification is a legal determination.
- California rule verified against Cal. Civ. Code § 1793.2(d)(2); other state rules are not verified in this phase and use the 120,000-mile divisor as a general reference.
- Taxes/fees and incidental costs are included only if you enter them.
- The cash-and-keep range is an illustrative modeled range (10%–25% of net refund), not observed market data.
- Civil penalties, lease residuals, and federal Magnuson-Moss outcomes are not modeled in this phase.
- Rounding: currency displayed to the nearest dollar; intermediate calculations are not rounded.
- Methodology version: 1.0. State rules last reviewed: November 2026 for California only.
Frequently asked questions
How is an EV lemon law buyback calculated?
The statutory math generally starts with a refund basis (purchase price plus applicable taxes, fees, and incidental costs), subtracts a mileage offset (purchase price × qualifying miles ÷ state divisor), and then accounts for any loan payoff. The net result is the estimated cash to the consumer. State rules vary.
What miles count for the lemon law mileage offset?
It depends on the state. Some states freeze the offset at the odometer reading of the first repair attempt for the defect; others count to settlement. The difference can be thousands of dollars on the same vehicle. Verify your state’s basis.
Does the 120,000-mile divisor apply to EVs?
California statute uses a 120,000-mile divisor for the offset formula. Other states may use a different divisor, a capped deduction, or no formula. This calculator marks non-California results as general estimates until each state’s rule is verified.
How does loan payoff work in a lemon law buyback?
If the vehicle is financed, the lender is typically paid first and the remainder goes to the consumer. If the loan balance exceeds the net refund, you may face a deficiency rather than receive cash. A negotiated settlement may address the gap; consult an attorney.
Can I get cash-and-keep instead of a buyback?
Cash-and-keep is often a negotiated remedy rather than a statutory formula. The range shown is an illustrative modeled range (10%–25% of the calculated net refund) for comparison only. It is not observed market data and not a statutory entitlement.
Is my state a formula state, a capped state, or a no-formula state?
State rules vary. California uses a statutory formula with a 120,000-mile divisor. Other states may use a different divisor, cap the deduction, or have no statutory formula. Verify your state’s rule before relying on an estimate.
Does battery degradation qualify for lemon law?
Qualification is a legal determination that depends on your state’s statute, the defect, and the repair history. This calculator estimates the math but does not determine qualification. Document repair attempts and consult an attorney if the issue is material.
Are taxes and fees included in the refund?
In California, the statute includes collateral charges such as taxes and registration, and incidental damages. Other states vary. Enter your actual taxes/fees so the estimate reflects your situation.
What is the difference between a manufacturer buyback and a statutory repurchase?
A manufacturer goodwill buyback may use a different formula and may involve waiver terms. A statutory repurchase follows the state lemon-law formula. This calculator estimates the statutory math.
What if my loan balance is higher than the refund estimate?
The calculator shows a potential-deficiency warning. The gap may be negotiated or addressed through a deficiency waiver, but that is a legal process. The estimate is not legal advice.
Does a longer EV battery warranty extend my lemon-law window?
Not automatically. Lemon-law presumption windows and battery warranties are different clocks. A longer battery warranty does not automatically extend lemon-law eligibility. Keep repair orders and document the first repair attempt.
Sources and review dates
Verified for this phase: California statutory formula and refund basis — Cal. Civ. Code § 1793.2(d)(2) and § 1794 (California only). State rules last reviewed: November 2026 (California only). All other state rules are not verified in this phase and are shown as general estimates. Methodology version 1.0.
This page is not legal advice. For a specific claim, consult a licensed attorney in your state.
EV Lemon Law Buyback Calculator: Estimate Your Statutory Refund, Mileage Offset, and Loan Payoff
Your EV lemon law buyback estimate depends on three things: your state’s offset basis, the odometer reading at your first repair attempt, and your outstanding loan balance. Use the calculator on this page to see your gross refund basis, mileage offset, net refund, loan payoff, and net cash to consumer in one flow.
This page explains what those numbers mean, how the statutory math works across states, what the calculator does not do, and the EV-specific considerations that generic lemon law calculators tend to miss. It is not legal advice. Qualification for lemon law protection is a legal determination that depends on your state’s rules, your repair history, and the nature of the defect.
What This Calculator Estimates — and What It Does Not
The calculator estimates statutory repurchase math: the arithmetic used to calculate a refund under a state lemon law. It does not determine whether your EV is a lemon. It does not model civil penalties, lease residuals, or federal Magnuson-Moss outcomes in its current phase. It does not predict what a manufacturer will offer or what a court will award.
- What it does: calculates gross refund basis, mileage offset, net refund, loan payoff, and net cash to the consumer, with the state-basis label displayed inside the result.
- What it does not do: qualify your claim, model negotiated settlements beyond an illustrative range, or replace a licensed attorney’s review.
- State coverage: California is modeled with a precise formula in this phase. Other states are shown as general estimates with a clear “state rule not modeled precisely” notice. Your state may use a different divisor, a capped deduction, or no formula at all.
How the EV Lemon Law Buyback Calculation Works
The structure is consistent at the top: the manufacturer returns what you paid, then subtracts something for the miles you drove before the defect surfaced. The disagreements begin with that subtraction.
Gross refund basis: purchase price, taxes, fees, and incidental costs
In California, the refund basis includes the purchase price, collateral charges such as sales tax and registration, and incidental damages. The formula adds sales or use tax, license fees, registration fees, other official fees, and incidental damages such as repair, towing, and rental car costs actually incurred. The purchase price is generally the actual price paid rather than the bare sticker price.
Gross refund basis = purchase price + taxes/fees + incidental costs
Other states vary on whether taxes and fees are included in the refund basis. The calculator lets you enter your actual amounts so the estimate reflects your situation rather than a generic assumption.
Mileage offset: which miles count, and why the state matters more than the divisor
California’s formula uses the purchase price, the odometer reading at the first repair attempt for the defect, and a 120,000-mile divisor:
Mileage offset = purchase price × (miles at first repair attempt ÷ 120,000)
Only pre-complaint miles count — not the total miles on the vehicle when the case resolves.
The much larger variable across states is which odometer reading feeds the formula. Roughly seventeen states freeze the deduction at the mileage on the first repair visit for that defect. About eleven states count all the way to the settlement date. The consequence is substantial. On a $42,000 vehicle first brought in at 4,300 miles and sitting at 22,400 miles by decision, a frozen-basis state produces a deduction of approximately $1,505, while a current-mileage state using the same divisor produces roughly $7,840 — a difference of more than $6,300 produced by one phrase in one subsection.
The calculator surfaces this distinction inside the result panel. If your state freezes the offset at first repair, the result says so. If your state counts to settlement, the result says that instead. If your state has no statutory formula, the calculator returns a range rather than inventing a precise number.
Loan payoff and net cash to consumer
If the EV is financed, the lender is typically paid first and the remainder goes to the consumer. When the outstanding loan balance is less than or equal to the statutory refund, the manufacturer pays the lender directly and gives the difference to the consumer. When the loan balance exceeds the refund, a deficiency arises — a gap the consumer may still owe the lender. Deficiency scenarios can arise from rolled-in negative equity from a prior trade-in, long loan terms with minimal principal paydown, or faster-than-expected depreciation.
Net refund = gross refund basis − mileage offset
Net cash to consumer = net refund − loan payoff
If the calculator shows a negative net cash figure, it displays a deficiency warning rather than presenting the number without context. The warning explains that the gap may be negotiated or addressed through other legal mechanisms, but that determination belongs to an attorney.
EV-Specific Considerations in a Lemon Law Buyback
EVs are fully covered by lemon laws, but the defect landscape and warranty structure differ from gasoline vehicles. The calculator acknowledges these considerations without claiming to determine qualification.
Battery, charging, and propulsion defects
EV-specific qualifying defects can include high-voltage battery capacity degradation, premature battery failure, charging port failures, DC fast-charge errors, drive-unit failures, thermal management problems, and software regressions that degrade advertised features. Range loss greater than roughly 30% within a few years is often treated as suspect, though “reasonable” degradation depends on the facts. These are defect categories a lemon law analysis may consider; the calculator does not evaluate whether a specific defect meets a legal threshold.
Two separate clocks: lemon-law presumption and battery warranty
The lemon-law presumption window and the EV battery warranty are different clocks. California’s lemon-law presumption generally operates during the first 18 months or 18,000 miles if certain repair-attempt or out-of-service thresholds are met, but claims can still be viable outside that window depending on the facts. Separately, high-voltage batteries and electric powertrain components typically carry at least an 8-year or 100,000-mile warranty, and some manufacturers offer longer coverage.
A longer battery warranty does not automatically extend lemon-law eligibility. The two tracks serve different purposes: the warranty is a repair obligation, while the lemon law is a repurchase or replacement remedy. Documenting the first repair attempt at low mileage protects your position under both.
Incidental costs specific to EV ownership
The calculator includes an EV-specific checklist: towing, rental or rideshare during repair, charging-network costs incurred while the vehicle was out of service, home-charger remediation, and storage. These categories reflect practical EV ownership costs that generic lemon law calculators tend to overlook. Keep receipts — incidental damages generally need documentation.
State-Basis Differences That Change Your Number
States do not agree on how to calculate the use deduction. The differences fall into three broad categories:
| State approach | What it means for the result | Calculator behavior |
|---|---|---|
| Statutory formula | A precise number computed the way the state specifies (for example, California’s 120,000-mile divisor) | Returns a calculated estimate with the state-basis label displayed |
| Capped deduction | A ceiling on the use allowance, with amounts below it arguable | Returns an estimate and explains that the result is subject to a cap |
| No statutory formula | The rules use a “reasonable allowance” without defining the arithmetic | Returns an explained range rather than inventing a precise number |
Approximately twenty-eight states write a formula into their rules, ten cap the deduction, and twelve never wrote one at all. Ohio is a notable outlier: its rules authorize no use deduction at all on a returned vehicle. California is modeled with a precise formula in this phase; other state rules are labeled as general estimates until each is independently reviewed.
Buyback vs. Replacement vs. Cash-and-Keep
Statutory repurchase math is one remedy among several. The calculator focuses on the buyback math; the other remedies involve different calculations and different legal standards.
- Buyback / repurchase: you return the vehicle and receive the statutory refund math shown above. This is the remedy the calculator estimates.
- Replacement: the manufacturer provides a comparable replacement vehicle. The math differs (replacement value rather than refund), and this phase does not model it.
- Cash-and-keep: you keep the vehicle and accept a negotiated cash payment for the defect. This is often a settlement rather than a statutory formula. The calculator displays an illustrative modeled range — placeholder methodology of 10%–25% of the calculated net refund — and labels it as a comparison baseline, not a statutory entitlement or observed market data.
The cash-and-keep range is the feature most likely to be misunderstood. It is not a prediction of what a manufacturer will offer. It is a modeled band intended to give you a baseline when discussing remedies with an attorney.
Worked Example: California Purchase
The following example uses California’s formula. It is a calculated estimate, not a legal entitlement or an observed outcome.
Inputs: California; selling price $50,000; taxes/fees $4,500; incidental costs $1,200; first-repair miles 6,000; loan balance $32,000.
- Gross refund basis = $50,000 + $4,500 + $1,200 = $55,700
- Mileage offset = $50,000 × (6,000 ÷ 120,000) = $2,500
- Net refund = $55,700 − $2,500 = $53,200
- Loan payoff = $32,000
- Net cash to consumer = $53,200 − $32,000 = $21,200
If the same vehicle had been brought in at 18,000 miles instead of 6,000, the offset would rise to $7,500 and the net cash would fall to $16,200 — a difference of $5,000 produced by the timing of the first repair visit alone.
Methodology and Assumptions
- Formula: Gross refund basis = purchase price + taxes/fees + incidental costs. Mileage offset = purchase price × (qualifying miles ÷ state divisor). Net refund = gross − offset. Net cash = net refund − loan payoff.
- California modeling: Divisor 120,000; first-repair basis; includes taxes, fees, and incidental damages where entered.
- Other states: Labeled “state rule not modeled precisely.” The estimate uses the California 120,000-mile divisor as a general statutory baseline. Your state may differ.
- Taxes and fees: Included only if you enter them. The calculator does not auto-apply state tax rates.
- Incidental costs: Included only for checked categories with an amount. The sum is added to the gross refund basis.
- Cash-and-keep: Illustrative modeled range (10%–25% of calculated net refund). Not observed market data and not a statutory formula.
- Rounding: Currency displayed to the nearest dollar. Intermediate calculations are not rounded.
- Not modeled in this phase: Civil penalties; lease residuals; federal Magnuson-Moss outcomes; manufacturer goodwill offers.
- Methodology version: 1.0.
Limitations: What This Calculator Does Not Do
- It does not determine whether your EV qualifies as a lemon. Qualification depends on your state’s rules, repair attempts, days out of service, and the nature of the defect.
- It does not model negotiated settlements beyond the illustrative cash-and-keep range.
- It does not provide legal advice or predict what a manufacturer, arbitrator, or court will do.
- It does not precisely model non-California state rules. Those results are general estimates.
- It does not calculate civil penalties, lease buyback math, or federal Magnuson-Moss remedies.
- It does not account for negative equity from a prior trade-in unless you include that amount in the loan balance field.
If the result is material to a decision, verify your state’s rules and consult a licensed attorney. The estimate is a starting point for that conversation, not a substitute for it.
Frequently Asked Questions
How is an EV lemon law buyback calculated?
The general structure starts with a refund basis (purchase price plus applicable taxes, fees, and incidental costs), subtracts a mileage offset (purchase price × qualifying miles ÷ state divisor), and then accounts for any loan payoff. The result is the estimated cash to the consumer. State rules vary on the divisor, the qualifying miles, and whether taxes and fees are included.
What miles count for the lemon law mileage offset?
It depends on the state. Roughly seventeen states freeze the offset at the odometer reading of the first repair attempt for the defect. About eleven states count miles to settlement. California is a first-repair state. The difference can exceed $6,000 on the same vehicle.
Does the 120,000-mile divisor apply to EVs?
California’s formula uses a 120,000-mile divisor for the offset, and it applies to EVs the same way it applies to other vehicles. Other states may use a different divisor, a capped deduction, or no formula. The calculator labels non-California results as general estimates.
How does loan payoff work in a lemon law buyback?
The lender is typically paid first. If the loan balance is less than or equal to the refund, the manufacturer pays the lender and the consumer receives the difference. If the loan balance exceeds the refund, a deficiency arises. Deficiency scenarios may be negotiated, but that is a legal process.
Can I get cash-and-keep instead of a buyback?
Cash-and-keep is often a negotiated settlement rather than a statutory formula. The calculator shows an illustrative modeled range (10%–25% of net refund) for comparison only. It is not a prediction or an entitlement.
Is my state a formula state, a capped state, or a no-formula state?
State rules vary. About twenty-eight states write a formula, ten cap the deduction, and twelve have no statutory formula. California is a formula state. Verify your state’s rules before relying on an estimate.
What if my loan balance is higher than the refund estimate?
The calculator shows a potential-deficiency warning. The gap may be negotiable, and some attorneys pursue deficiency as incidental damages or through GAP insurance, but those are legal strategies that require an attorney’s evaluation. The estimate is not legal advice.
Does battery degradation qualify for lemon law?
Qualification is a legal determination. Battery degradation may qualify if it substantially affects the vehicle’s use, value, or safety and the case meets the state’s repair-attempt or out-of-service thresholds. The calculator estimates the math but does not evaluate qualification.
Are taxes and fees included in the refund?
In California, the refund basis includes sales or use tax, license fees, registration fees, other official fees, and incidental damages. Other states vary. Enter your actual taxes and fees so the estimate reflects your transaction.
What is the difference between a manufacturer buyback and a statutory repurchase?
A manufacturer goodwill buyback may use a different formula and may involve release or waiver terms. A statutory repurchase follows the state lemon law formula. The calculator estimates the statutory math.
Does a longer EV battery warranty extend my lemon-law window?
Not automatically. The lemon-law presumption window and the battery warranty are separate clocks. California’s presumption generally operates in the first 18 months or 18,000 miles, while the high-voltage battery warranty typically runs at least 8 years or 100,000 miles. A longer warranty does not automatically extend lemon-law eligibility, but it may provide a separate repair remedy.
Estimate only. Not legal advice. Qualification is a legal determination. State rules other than California are not modeled precisely in this phase.
If your loan balance is close to the refund estimate, it helps to see your exact payoff figure first. Use the EV loan calculator with trade-in and negative equity to check your current equity position and what a deficiency could look like before you pursue a buyback.
Battery capacity loss is one of the most common EV-specific defects in lemon-law discussions. You can estimate how much capacity your pack has lost with the EV battery degradation calculator before documenting the issue with your dealer.
The gross refund basis includes taxes, registration, and DMV fees — the same items that make up your out-the-door price. To see how those fees are calculated in your state, try the state-aware EV out-the-door and loan calculator.
Related Tools
- State-Aware EV Loan & Out-the-Door Calculator — see the full cost basis your refund is built from.
- EV Loan Calculator with Trade-In & Negative Equity — check your loan payoff and deficiency exposure.
- EV Battery Degradation Calculator — estimate battery health before raising a lemon-law claim.
The statutory basis for the California formula is California Civil Code § 1793.2, which defines the manufacturer’s repair, replacement, and refund obligations.
A separate federal pathway exists under the Magnuson-Moss Warranty Act, as explained by the Federal Trade Commission. The FTC’s business guide outlines warranty disclosure and enforcement rules.
EV battery defects that may give rise to a lemon-law claim fall within the broader safety landscape tracked by the National Highway Traffic Safety Administration’s Battery Safety Initiative, which coordinates research and defect investigations for electric-vehicle batteries.
For the regulator’s formal interpretations of federal warranty requirements, see the FTC’s Interpretations of the Magnuson-Moss Warranty Act (16 CFR Part 700).
The California Courts self-help guide on lemon law explains arbitration and court options in plain language for consumers evaluating a claim.