California’s new three-day cancellation rule will make it possible for consumers to cancel certain used-car purchases and leases beginning October 1, 2026.
But returning the car will not necessarily be free.
Under the new California CARS Act, a dealer may charge a restocking fee, and an additional mileage charge can apply if you drive the vehicle far enough before returning it.
So how much could returning a used car actually cost?
For a qualifying cancellation, the main potential costs are:
- A restocking fee equal to 1.5% of the vehicle’s sale price
- A minimum restocking fee of $200
- A maximum restocking fee of $600
- An additional $1 per mile after 250 miles of driving
- A maximum additional mileage charge of $150
There is also a separate 400-mile limit that can affect whether you still have the statutory right to cancel at all.
How Is the Restocking Fee Calculated?
Under California’s new three-day cancellation rule, a dealer may charge a restocking fee when a consumer exercises the cancellation right.
The fee is calculated at 1.5% of the vehicle’s sale price, but it cannot be lower than $200 or higher than $600.
That means the percentage does not always determine what you actually pay.
For example:
| Used Vehicle Price | 1.5% | Potential Restocking Fee |
|---|---|---|
| $10,000 | $150 | $200 minimum |
| $20,000 | $300 | $300 |
| $30,000 | $450 | $450 |
| $40,000 | $600 | $600 |
| $50,000 | $750 | $600 maximum |
So someone returning a $20,000 qualifying used car could face a $300 restocking fee, while someone returning a $50,000 qualifying vehicle would not simply pay the full 1.5% calculation because the statutory cap applies.
Is the 3-Day Return Completely Free?
No.
The new law gives qualifying consumers a right to cancel, but a right to cancel is not the same thing as a free return policy.
The required California disclosure specifically warns consumers that additional restrictions may apply, including a restocking fee.
That distinction is important.
A buyer should not interpret “three-day right to cancel” as meaning they can take a used car home, drive it for several days, and return it without any financial consequences.
Is There Also a Mileage Fee?
There can be.
If the vehicle is driven more than 250 miles, an additional mileage charge may apply.
The charge is $1 for each mile over 250 miles, up to a maximum additional mileage charge of $150.
For example:
- 200 miles driven → no additional mileage charge under this provision
- 275 miles driven → up to $25
- 300 miles driven → up to $50
- 350 miles driven → up to $100
- 400 miles driven → up to $150
This mileage charge is separate from the restocking fee.
That means a consumer could potentially owe both.
How Much Could You Pay in Total?
Suppose you purchase a qualifying used vehicle for $30,000 and then cancel the transaction within the permitted period.
The restocking fee could be:
1.5% of $30,000 = $450
Now suppose you drove the vehicle 300 miles.
That is 50 miles beyond the 250-mile threshold:
50 × $1 = $50
The combined potential charges would therefore be:
$450 restocking fee + $50 mileage charge = $500
The exact amount in an actual transaction will depend on the statutory conditions and the circumstances of the return.
What Happens at 400 Miles?
This is where the mileage rules become especially important.
The law does not merely continue increasing the mileage fee indefinitely.
If the vehicle has been driven more than 400 miles between the transaction and attempted cancellation, the statutory three-day cancellation right does not apply. Current summaries of the enacted law specifically identify the 400-mile restriction.
So there are two different mileage numbers to remember:
250 miles → additional charges can begin
More than 400 miles → the statutory cancellation right can be lost
Those are not the same rule.
Does Returning the Car Earlier Reduce the Restocking Fee?
Not simply because you return it on day one instead of day three.
The restocking fee is tied to the vehicle price and the statutory limits rather than being calculated according to how many days you kept the car.
However, returning the vehicle earlier may make it easier to avoid accumulating additional mileage.
If you already know that you intend to cancel, continuing to drive the vehicle unnecessarily could increase the potential cost or eventually jeopardize the cancellation right.
What If You Only Drive 50 Miles?
Keeping the mileage very low can help you avoid the additional mileage charge, but it does not necessarily eliminate the restocking fee.
For example, someone who drives only 50 miles and properly cancels a qualifying transaction could still face the applicable restocking fee.
The mileage charge and restocking fee are separate.
Does the Fee Apply to Used-Car Leases?
The new three-day protection covers qualifying used-vehicle purchases and leases.
California DMV specifically describes the October 1 change as requiring dealers to provide a three-day right to cancel the purchase or lease of a vehicle under the applicable threshold.
Therefore, consumers should not assume that leasing instead of buying automatically avoids the cancellation-related costs.
Does the Fee Apply to New Cars?
The three-day used-vehicle cancellation rule does not create a general cooling-off period for new cars.
California’s required notice expressly states that the state does not have a cooling-off period for new vehicles while explaining the new cancellation protection for qualifying used vehicles.
So the restocking fee discussed here should not be interpreted as a way to pay a fee and automatically return any new car within three days.
What About Used Cars Over $50,000?
The new cancellation protection is limited to qualifying used vehicles within the law’s price threshold.
California DMV summarizes the new law as providing the three-day cancellation right for a vehicle under $50,000, while the enacted statutory notice describes qualifying used vehicles at $50,000 or less.
Consumers buying higher-priced vehicles should therefore not assume they can simply pay the $600 maximum restocking fee and use the statutory three-day cancellation process.
The fee cap does not expand which transactions qualify.
What If the Dealer Has Its Own Return Policy?
A dealer can offer a return or cancellation policy that provides greater protection than California law requires.
If a dealer voluntarily offers a different policy, its fees, mileage limits, deadlines and other conditions may differ from the statutory three-day cancellation right.
That is why consumers should distinguish between:
- California’s statutory cancellation right
- A dealership’s voluntary return policy
The written terms should explain which one is being used.
What Changes on October 1, 2026?
California’s current system is different.
Right now, qualifying consumers purchasing certain used vehicles for less than $40,000 must be offered the opportunity to purchase a two-day contract cancellation option agreement. California DMV also makes clear that there is currently no general cooling-off period without that agreement.
The CARS Act changes that system when it takes effect on October 1, 2026, introducing the new three-day cancellation protection for qualifying transactions.
Anyone purchasing a vehicle before the effective date should therefore not assume the October rules already apply.
The Bottom Line
Returning a qualifying used car under California’s new three-day cancellation rule may still cost you money.
The most important numbers to remember are:
- 1.5% — potential restocking fee based on vehicle price
- $200 — minimum restocking fee
- $600 — maximum restocking fee
- 250 miles — point after which an additional mileage charge can apply
- $1 per mile — potential charge for applicable mileage above 250
- $150 — maximum additional mileage charge
- More than 400 miles — can eliminate the statutory cancellation right
So California’s new rule provides consumers with an important way out of qualifying used-car purchases and leases, but it should not be confused with a completely free three-day return policy.
For anyone planning to use the new protection after October 1, 2026, both the calendar and the odometer can affect what happens—and how much the cancellation costs.