Travel · official-source review · reviewed 2026-10-26
A rental return desk offers to refuel at a flat fee, and the pump a mile away usually costs less.
Turn tank size, fuel level, price, a refueling fee, and a station detour into the cheaper return.
Rental drivers deciding whether to refuel before return or accept the desk fee.
Use the source document or official route that applies to your situation. This guide does not contact another person or verify external information.
Use the tank size in the rental agreement, not the size of a similar car.
Note the fuel level at return. A gauge at three quarters needs a quarter tank.
Use the price at the station near the return lot.
Add the fuel for the drive to the station and back.
The App compares the top-up cost with the refueling fee on the contract.
A 14-gallon tank at 75 percent needs 3.5 gallons, or $12.60. The detour adds $1.03, so $13.63 beats a $45 refueling fee by $31.37.
Use your own source and details. The example is not a record about a real person or organization.
Two returns. Both are examples.
Both cases are examples, not records about a real person. The bars show the same numbers the free App computes.
U.S. Department of Energy and U.S. Environmental Protection Agency, FuelEconomy.gov · reviewed 2026-10-26
What this source supports: FuelEconomy.gov publishes official MPG estimates and real-world guidance for comparing vehicles.
Source limit: Your own mileage varies with driving style, load, and conditions. Budget from your real-world number.
These sources support the statements above. They do not show that every person needs this guide. They do not show a specific result.
This guide multiplies the figures you enter. It does not read a rental contract or promise a station price.
Your own mileage varies with driving style, load, and conditions. Budget from your real-world number.
Use current instructions from the responsible organization. This guide is a planning aid, not an official decision or a substitute for qualified advice.
Turn tank size, fuel level, price, a fee, and a detour into the cheaper way to return the car.
This App multiplies the figures you enter. It does not read a rental contract or promise a station price.
You enter every number yourself. The sources support the method and the limits. They do not produce a result for your specific case. Keep the original documents next to the sheet you build.
The App computes the worked example with your own numbers, in your browser.
APP 1
Turn tank size, fuel level, price, a fee, and a detour into the cheaper way to return the car.
Free · no account · no upload
Open Rental Car Fuel Return CostThe App runs in this browser. It does not send or save entries. Copy, download, or print only when you choose.
This guide uses short, direct instructions as an ASD-STE100-style writing target. It is not a formal certification.
Companion App: Rental Car Fuel Return Cost. It runs in this browser and does not upload your entries.
This guide is edited for clarity and checked against the sources it links. It is not a substitute for official instructions or qualified advice. A linked source does not show that every person needs this guide.