
Yes, you can generally change a car rental reservation made through Priceline, but the ability to modify your booking and the potential fees involved depend heavily on the specific type of rate you selected. The most critical factor is whether you chose a Prepaid rate or a Pay-Later rate. Prepaid are typically much more restrictive and often cannot be changed or cancelled without forfeiting the entire payment. Pay-Later reservations offer significantly more flexibility, usually allowing free modifications or cancellations up to 24 or 48 hours before your pickup time.
To change your reservation, you need to manage it through your Priceline account, not by contacting the rental car company directly. Log in to "My Trips" on the Priceline website or app, locate your rental car booking, and look for a "Modify" or "Change" option. The system will then guide you through selecting new dates, times, or vehicle types. It's crucial to understand that any change is subject to price availability. If the rental rate for your new parameters is higher, you will have to pay the difference. If it's lower, policies on receiving a refund or credit vary.
The table below outlines the key differences between the two main rate types:
| Rate Type | Change Policy | Cancellation Policy | Best For |
|---|---|---|---|
| Pay-Later | Usually free changes up to 24-48 hours before pickup. Subject to new pricing. | Typically free cancellation within the same window. | Travelers who need flexibility or are unsure of plans. |
| Prepaid | Often non-changeable and non-refundable. | Usually results in a 100% forfeiture of the payment. | Budget-conscious travelers with fixed plans. |
Always review the terms and conditions of your specific reservation before booking. If you encounter issues online, contacting Priceline's customer service is the next step, but be prepared with your itinerary number.

Log into your Priceline account and go to "My Trips." Find your rental car booking. If you see a "Modify" button, you're in luck—that means you probably have a flexible, Pay-Later rate. You can change dates or car type right there. If you don't see that option, you likely booked a steeply discounted Prepaid rate, which is almost always set in stone. In that case, trying to change it usually means losing all your money. Always double-check the rate rules before you click "book."

The main thing to watch out for is the cost implication. Even if your reservation is changeable, you're re-booking at current prices. I once tried to extend my rental by a day, and the daily rate had jumped up 50%. It ended up being cheaper to make a separate new reservation for the extra day. Also, if you prepaid, don't bother trying to change it; the fees will wipe out any savings. Your best bet is to stick with Pay-Later deals if you think your plans might shift.

It's possible, but the process is entirely handled by Priceline, not Hertz or Enterprise. You have to use their platform. The rules are strict: Prepaid means no changes, period. Pay-Later gives you a window. A key detail people miss is that changing the pickup location is often treated as a cancellation and a new booking, which might have different rules and fees. So, a simple date change might be free, but switching cities could cost you. Scrutinize the terms on your voucher.

I use Priceline for rentals often, and yes, you can make changes. The trick is knowing what you bought. I always book the Pay-Later option because life happens—flight delays, meetings run long. I've modified bookings a handful of times through the app without any hassle or fee, just paying the new price. It's straightforward. But I never, ever book the non-refundable Prepaid rates for a rental car. The risk is too high. The small upfront savings aren't worth the potential headache if your trip gets rearranged.


