
Yes, you can typically use your existing E-ZPass in a rental car. The process is generally straightforward, but success depends on correctly setting up the transponder with the rental company and understanding the potential fees involved. The key is to inform the rental company that you plan to use your own transponder, as they often have specific procedures to link it to your rental agreement for billing purposes.
When you pick up the car, explicitly tell the agent you will be using your personal E-ZPass. They may need to add a note to your file or provide a specific transponder holder. Crucially, do not use the rental car's built-in transponder if it has one, as rates are often significantly higher. Place your own E-ZPass on the windshield, usually behind the rearview mirror.
The tolls you incur will be charged to your E-ZPass account as usual. However, the rental company may also add an "administrative fee" for each day you use a toll road, even if you pay with your own device. These fees can add up, so it's important to ask about them upfront.
| Rental Company | on Personal E-ZPass | Admin Fee per Toll Day (Approx.) | Built-in Transponder Name |
|---|---|---|---|
| Enterprise | Supported; inform at counter | $3.95 - $4.95 | PlatePass |
| Hertz | Supported; inform at counter | $4.95 - $5.95 | PlatePass |
| Avis | Supported; inform at counter | $3.95 - $4.95 | Avis e-Toll |
| Budget | Supported; inform at counter | $3.95 - $4.95 | PlatePass |
| National | Supported; inform at counter | $3.95 - $4.95 | PlatePass |
For a longer trip, these daily fees can become expensive. A smart alternative is to use your own E-ZPass but pay cash for occasional tolls to avoid triggering the rental company's daily fee system. The safest bet is to always ask about the fee structure before you leave the lot.

Oh yeah, I use mine all the time. Just stick it on the windshield like you would in your own car. The key is to tell the person at the counter when you're picking up the car. They'll make a note so the system knows to let your E-ZPass work. Makes the drive so much easier—you just breeze through the express lanes. Just watch out for the extra fee the rental company might charge you per day.

From my experience, it works, but you must be proactive. At the rental counter, state clearly, "I will be using my personal E-ZPass transponder." Ask them to deactivate any in-car toll system to avoid double-charging. I learned this the hard way once. The rental company added a daily convenience fee, which was annoying but still cheaper than their premium toll rates. The process is reliable if you communicate effectively at the start.

If you're watching your budget, using your own E-ZPass is the way to go. The rental company's pay-by-plate system charges the highest possible toll rate plus a hefty daily fee. Your E-ZPass gets you the discounted rate. The catch is that many rental companies still slap on an " fee" for each day you use a toll road. For a week-long trip, that could be an extra $30 or so. It's still a savings, but it pays to ask about all fees upfront.

I travel for work constantly, and this is my routine. I keep my E-ZPass in my glove compartment. At the rental counter, it's the first thing I mention. I say, "I have my own E-ZPass; please ensure your internal toll system is off." I then place my transponder on the glass. It's seamless. The bills go straight to my account. The small daily fee from the rental agency is just a cost of doing business and is far more predictable than dealing with mailed invoices or their inflated rates.


