Have you noticed that dealerships will have different mpg listed on its vehicles? Well, there's a reason for it that you may ...

While figuring out a car's fuel efficiency is a pretty simple equation, planes don't work quite the same. Here's how planes ...

Talking about a Dodge muscle car's miles per gallon (mpg) is irrelevant. It's more about "smiles per gallon" when referring to the fuel economy of an almost extinct Dodge Charger or Challenger.

DETROIT (AP) — Hours after being sworn in as the new U.S. Secretary of Transportation, Sean Duffy took aim at the main way the federal government regulates miles per gallon for cars and pickup ...

Under proposed legislation, Illinois would explore the viability of reducing reliance on the state's gas tax by putting in ...

As engines become more fuel efficient, and electric vehicles make greater inroads, Illinois faces an unexpected consequence — less funding for roads.

Phase 2 would begin in 2029, when it would be mandatory for these drivers, and voluntary for people with cars that get at least 20 miles per gallon. In phase 3, running 2031-2035, the state would ...