can ez pass be used in different cars

[StGrace]

Yes, an E-ZPass transponder can generally be used in different cars. The key factor is that the transponder must be properly mounted on the windshield and the vehicle using it must be listed on your E-ZPass account. This is a common setup for families with multiple vehicles.

The primary reason for registering all vehicles is to ensure the correct toll rate is applied. Tolls are often calculated based on the number of axles and vehicle classification (e.g., car, motorcycle, commercial truck). If an unregistered truck uses a transponder from a car account, it may be charged incorrectly, leading to a violation or a manual adjustment.

To add a vehicle, you simply log into your online E-ZPass account or contact customer service. You'll need the vehicle's make, model, year, and license plate number. Most accounts allow you to register several vehicles to a single transponder, which is convenient for swapping it between your personal car and an SUV you use for trips. However, the transponder should only be used in one vehicle at a time.

For rental cars, the process is different. While some E-ZPass agencies offer portable tags for rentals, it's often easier to use the rental company's own toll service or a national pass like SunPass if traveling in Florida. Using your personal transponder in a rental car that isn't on your account can sometimes work, but it may trigger a review if the license plate doesn't match. The safest approach is to check with your E-ZPass provider beforehand.

E-ZPass Agency	Max Vehicles per Tag	Toll Accuracy with Unregistered Vehicle	Rental Car Policy
New York E-ZPass	4-5 vehicles	Tolls charged, but potential for misclassification	Not recommended
New Jersey E-ZPass	4 vehicles	Tolls charged, but potential for misclassification	Portable tag option available
Pennsylvania Turnpike	5 vehicles	Tolls charged, but potential for misclassification	Use official E-ZPass rental program
Massachusetts E-ZPass	No official limit	Tolls charged, but potential for misclassification	Use rental company's transponder
Illinois I-PASS	5 vehicles	Tolls charged, but potential for misclassification	Use I-PASS for occasional rentals

[StColeman]

Absolutely, you can move it between cars. I do it all the time with my sedan and my wife's SUV. The trick is to make sure both vehicles are listed on your online account. That way, the system knows to charge the toll correctly based on which car it scans. Just remember to mount it properly on the windshield each time you switch.

[FranciscoLynn]

The short answer is yes, but with a critical step. The E-ZPass system identifies your car by its license plate. If the plate isn't linked to your account, the toll might still be paid, but the vehicle classification could be wrong. This might lead to a higher toll or a notice. To avoid any issues, take two minutes to add the second car's details to your account online. It's a simple fix for peace of mind.