National Fuel Policy 2026: Refueling Fees Explained
National Car Rental's fuel policy is nearly identical to its sister brands Enterprise and Alamo (all owned by Enterprise Holdings). The default refueling service charge is approximately $10 to $11 per gallon — roughly three times retail pump prices. This page walks through every National fuel option, the real math with 2026 prices, and how to always come out ahead.
National's three fuel options
National presents these options at the counter — or, if you're using Emerald Club, pre-selected on your profile:
| Option | What it means | Cost if not used perfectly |
|---|---|---|
| Return full (default) | Get the car full, return it full. You fuel up yourself. | $10-$11/gal refueling charge if below full |
| Fuel Service Option (FSO) | Prepay for one full tank at near-retail pump prices. | $1-$16 of unused fuel you paid for |
| Flat refueling fee (select locations) | Flat $15-$25 fee regardless of fuel level returned. | Cheapest only on <40 mile rentals |
The math: all three options with real numbers
A Chevrolet Equinox rental with a 15.6-gallon tank, returned half-empty, at a typical 2026 US gas price of $3.65/gallon:
3.9 gal of unused fuel lost = $13.85 wasted
Emerald Club, Executive, Executive Elite, Chairman's Circle
National's loyalty tiers offer significant benefits — free day accrual, Executive Aisle car choice, guaranteed upgrades — but none of them waive refueling charges or discount FSO. The per-gallon refueling rate is the same for all members and non-members at the same airport location.
One subtle Emerald Club benefit relevant to fuel: faster return means less temptation to skip the fuel stop because you're running late. A rushed Executive Aisle member who returns at ¾ tank pays the same $50+ penalty as anyone else.
National vs Enterprise vs Alamo
Enterprise Holdings owns all three. Fuel policies are structurally identical, but:
- National is airport-focused with consistent premium pricing on everything including fuel (~$10.50/gal refueling)
- Enterprise has neighborhood branches with slightly lower refueling rates (~$10/gal)
- Alamo is positioned for leisure travel, often $0.25 cheaper per gallon than National at the same airport
Read more: National vs Enterprise — what's the real difference?
How to avoid National's refueling fee
- Photograph the fuel gauge at pickup. Especially important with Executive Aisle because you don't interact with a counter agent on pickup.
- Decline FSO at booking. Often pre-selected for Emerald Club members — review carefully.
- Find a gas station 3-5 miles from the return location. Airport-adjacent stations charge 20-50¢ more per gallon.
- Keep the gas receipt — required evidence in any dispute.
- Photograph the fuel gauge after filling with timestamp visible.
- Request a return receipt showing fuel level as full. Don't just drop keys in the box — that's when surprise charges happen.
International National rentals
National operates primarily in North America, Central America, and the Caribbean. For international travel, the same Enterprise Holdings family operates Enterprise Rent-A-Car in Europe and Asia. Fuel is charged per liter in international markets, typically 3× retail pump prices — the equivalent of $12-$17 per gallon. FillItRight auto-detects units and currency.
Frequently asked questions
How much does National charge for refueling?
Approximately $10 to $11 per gallon. Rate varies by airport. On a 15-gallon tank returned half-empty, that's approximately $75-$82 in charges.
Does Emerald Club or Executive status waive fuel charges?
No. All National loyalty tiers offer upgrades and free day accrual, but none waive refueling service charges or discount FSO.
What is National's Fuel Service Option?
FSO lets you prepay for one full tank at pickup at near-retail pump prices. No refueling charge regardless of return level, but no refund for unused fuel.
Is National fuel policy the same as Enterprise and Alamo?
Nearly — all three are Enterprise Holdings brands. National tends to charge $0.25-$1 more per gallon than Enterprise at the same airport. Alamo often matches Enterprise's lower rate.
Can I dispute a National refueling charge?
Yes. Photograph the fuel gauge at pickup and after filling, keep your gas receipt. Dispute in writing within 30 days. If unresolved, file a credit card chargeback within 60 days.
Do Executive Aisle cars come with a full tank?
Yes — same as any National rental. Executive Aisle just speeds up vehicle choice; fuel level is independent. Photograph the gauge before driving off.