Any car · Any route

Split gas fairly before you leave.

Exact fuel cost from distance, MPG and today's prices — split across the crew.

Gas is usually half the trip budget

The other half: tolls, food and lodging — add them mentally to what you see here. Quick math for the road: cost ≈ miles ÷ MPG × gas price. An SUV at 18 MPG costs nearly double an efficient sedan on the same route; sometimes renting the hybrid wins.