Rental Refueling Comparison Calculator
Rental Refueling Comparison Calculator. Compare entered refueling options. Enter your values and view the result.
Rental Refueling Comparison Calculator
Compare entered refueling options.
Use the calculation engine below to model your exact costs with custom fuel prices, distances, and vehicle efficiencies:
Rental Refueling Comparison Calculator: inputs
Adjust sliders or enter exact figures
Monthly Fuel Budget
Real-Time Visual Breakdown
Comparing your expense against alternative vehicle classes
Price Fluctuation Stress Test
See how unexpected gas price surges would impact your monthly budget
How Rental Refueling Comparison Calculator Works
This tool works by pricing the 3 standard rental refueling options for the same fuel used and showing the cheapest one.
- Step 1
Enter tank size and fuel used
Type the rental tank capacity and the gallons or liters you expect to burn.
- Step 2
Enter the prepaid fuel price
Add the agency price for a prepaid full tank, charged with no refund for unused fuel.
- Step 3
Enter the self-refuel price
Add the local station price near the return location.
- Step 4
Enter the agency refuel rate
Add the per-gallon charge the agency bills when the car comes back below full.
Rental Refueling Comparison Calculator Formula
The formula prices each option on its own terms and compares the totals.
Prepaid Cost = Tank Size × Prepaid Price
Self-Refuel Cost = Fuel Used × Local Price
Agency Refuel Cost = Fuel Used × Agency Rate
- Tank Size
- = full tank capacity of the rental car
- Fuel Used
- = gallons or liters burned during the rental
- Agency Rate
- = refueling charge per gallon set by the rental company
Worked Example
- A rental car has a 15-gallon (56.8 L) tank. The traveler burns 11 gallons (41.6 L) during the trip.
- Prepaid: 15 × $3.40 = $51.00, with 4 unused gallons left in the tank.
- Self-refuel: 11 × $3.70 = $40.70.
- Agency refuel: 11 × $9.50 = $104.50. Self-refuel saves $10.30 over prepaid and $63.80 over agency refuel.
Rental Refueling Comparison Calculator Conversion Table
The table compares the 3 options by fuel used for a 15-gallon tank, with prepaid at $3.40, self-refuel at $3.70, and agency refuel at $9.50 per gallon.
| Fuel Used (gal) | Fuel Used (L) | Prepaid | Self-Refuel | Agency Refuel | Cheapest |
|---|---|---|---|---|---|
| 3 | 11.4 | $51.00 | $11.10 | $28.50 | Self-refuel |
| 5 | 18.9 | $51.00 | $18.50 | $47.50 | Self-refuel |
| 8 | 30.3 | $51.00 | $29.60 | $76.00 | Self-refuel |
| 11 | 41.6 | $51.00 | $40.70 | $104.50 | Self-refuel |
| 13 | 49.2 | $51.00 | $48.10 | $123.50 | Self-refuel |
| 14 | 53.0 | $51.00 | $51.80 | $133.00 | Prepaid |
| 15 | 56.8 | $51.00 | $55.50 | $142.50 | Prepaid |
Prepaid fuel beats self-refueling only when the car comes back with less than 1.2 gallons (4.6 L) of the tank unused at these prices.
What is a Rental Refueling Comparison Calculator?
A Rental Refueling Comparison Calculator is a rental cost tool that compares prepaying for fuel, refueling yourself, and paying the agency to refuel.
Rental companies offer a prepaid tank at a set price, charge a premium rate to refill the car after return, or let renters refuel themselves. Agency refuel rates often run 2 to 3 times the local pump price. The Rental Refueling Comparison Calculator shows which option costs less for the planned fuel use.
The break-even point depends on how empty the car comes back. Prepaid fuel suits renters who return the car close to empty and have no time to stop at a station.
What are the uses of a Rental Refueling Comparison Calculator?
There are 4 main uses of the Rental Refueling Comparison Calculator, including counter decisions, airport return planning, and corporate travel rules.
Decide at the rental counter
Accept or decline the prepaid fuel offer with numbers in hand.
Plan an early-flight return
Check whether prepaying is worth it for a tight airport return.
Set company travel rules
Write a refueling policy for employees who rent cars.
Avoid surprise charges
See the cost of returning the car below full.