01
Mixed units can change the result
Rental car listings and fuel stations may use miles, gallons, kilometers, and liters. Choose the units that match your numbers.
Rental car fuel calculator
Estimate fuel budget from route distance and vehicle efficiency.
Fuel cost inputs
Fuel estimate tips
02
City driving needs a buffer
Traffic, hills, and air conditioning can lower real fuel economy. A 10-20% fuel buffer is useful for road trips.
Frequently asked questions
Is mpg based on US gallons?
Yes. The calculator converts common US mpg to liters.
Should I enter round-trip distance?
Enter the total distance you expect to drive during the trip.