If price is the deciding factor, the car trip will usually be the cheaper one for anything more than a single passenger or a single passenger with infant child in tow. (Kids under two generally ride the train free.)

In 2026, the answer depends heavily on the number of travelers and the specific route. For a solo traveler on a busy corridor like the Northeast (NY to DC), Amtrak is often cheaper when you factor in the high cost of gas, tolls, and "parking shock" in major cities. However, for a family of four or a group, driving is almost always cheaper because the cost of fuel and tolls is shared across all passengers, whereas Amtrak requires an individual ticket for every person. Long-distance Amtrak routes (like Chicago to Seattle) are often more of a "luxury cruise on rails" and can be significantly more expensive than driving, especially if you book a sleeper car. However, if you book your Amtrak tickets at least 14–21 days in advance using "Value" or "Saver" fares, you can snag prices that rival the cost of a tank of gas. For 2026 travelers, it is a high-priority step to calculate the "hidden" costs of driving—such as vehicle wear and tear (approx. $0.67 per mile) and the value of your time—versus the convenience of being able to work or sleep while the train handles the heavy lifting of the journey.