Not long ago, staying online on a road trip meant hunting for a coffee shop with free Wi-Fi or letting everyone tether to your phone until the data ran out. That's changed. Plenty of newer cars come with a hotspot built in, and older ones can get one from a small plug-in device. This guide covers what's available to U.S. drivers, and the right route depends mostly on how old your car is.
If You Have a Newer Car, You Might Already Have It
Many cars built in the last several years have a hotspot that owners never switch on. Most General Motors models from 2015 on (Chevrolet, GMC, Cadillac and Buick) get it through OnStar. Ford offers one on select vehicles from 2018 onward, powered by AT&T. Toyota sells Wi-Fi Connect for its new models, also on AT&T.
Every one of them needs an active data plan. On GM vehicles, the hotspot runs through OnStar Connect Plus, which costs $19.99 a month for 2025 and newer models and $24.99 for older ones. It includes unlimited data and connects up to 18 devices.
Ford owners sign up with AT&T, whose Connected Car page lists current pricing, and Ford includes a trial of three months or 3 GB of data. Toyota owners can manage Wi-Fi Connect in the Toyota app.
Verizon's connected car plans cover a different group of cars, including Lexus, Volkswagen, Hyundai, Kia, Genesis and BMW, plus select 2018 to 2020 Toyotas. If you have a Verizon Unlimited phone plan, adding the vehicle hotspot costs $20 a month. On a data-only plan, it drops to $10. Drivers who aren't Verizon customers can choose a $20 unlimited prepaid plan for some brands, including Toyota and Volkswagen.
If your car has none of this, you'll need to add it yourself.
T-Mobile SyncUP Drive: For Cars Without a Built-In Hotspot
The SyncUP Drive is one of the easiest ways to add a hotspot to a car that lacks one. It plugs into the OBD-II port, the same diagnostic port mechanics use, and every gasoline car sold in the U.S. since 1996 has one. Once it's in, it creates a hotspot on T-Mobile's network whenever the ignition is on.
Up to five devices can connect, and you manage the settings in T-Mobile's T-Life app. It also works as a vehicle tracker and diagnostic tool. The device costs $96, though T-Mobile sometimes offers it free through 24 monthly bill credits with a new qualifying line, and service starts at $10 a month.
Setup takes a few minutes. Plug it in and open the app. You're connected. Before you buy, check T-Mobile's compatibility tool, especially if you drive a hybrid, a diesel or an electric vehicle, since having the port doesn't guarantee support.
The catch is that it stays with the car. If you want something that follows you around, look at the next option.
Portable Hotspot Devices: No Car Required
A portable hotspot goes wherever you go. These standalone devices connect to the cellular network and broadcast Wi-Fi, like your phone's hotspot but without the drawbacks. Your phone drains its battery quickly when it's sharing a connection, and it wasn't built to act as a router. A dedicated device handles several connections without that strain, and it runs on its own data plan instead of eating into your phone's hotspot allowance.
Current options from Verizon, T-Mobile and AT&T all support 4G LTE and 5G where it's available. T-Mobile's current hotspots run from $90 to about $200 before a data plan. Some newer models support eSIM, so there's no physical SIM to keep track of.
What About Just Using Your Phone?
For a short trip with one or two devices, your phone's hotspot works fine. On a long drive where the whole back seat wants to stream, it falls over fast. Plug the phone in if you go this way, because the heat and battery drain are real.
Which Option Is Right for You
Before you spend anything, check whether your car already has a hotspot. Look in your manufacturer's app or the infotainment settings. If it does, activating a data plan is the simplest fix.
For an older car, the SyncUP Drive is a plug-and-play add-on that works on most gasoline vehicles. If you'd rather carry the connection from car to car, a portable hotspot does that, though it needs its own data plan too.
Nobody has to fight over the phone hotspot on road trips anymore.
