TripBuddy Guide
You booked the “$38 a day” car. At the counter, the total somehow became $96 a day — and by the time you added the deposit hold, your card was missing $600. Nothing was a scam, exactly. Every line item was technically disclosed somewhere in the fine print. But the price you compared when shopping bore almost no resemblance to the price you paid.
That’s the rental car game: the headline rate is a starting bid, and the fees are where the real price hides. This guide walks through every charge that can ambush you — airport surcharges, fuel policies, deposits, one-way fees, extra drivers, and insurance — so you can compare the total cost on DiscoverCars before you reserve, not after.
Sign up for monthly travel guides
The short answer: your pre-reserve checklist
If you want the whole thing in thirty seconds, run through this checklist before you click “book”:
- Airport surcharges. Renting at the airport can add 20–35% in concession and facility fees. Price the off-airport or downtown location too.
- Fuel policy. Choose full-to-full whenever you can — you buy the fuel, you return it full, no markup. Prepaid fuel only makes sense if you’re certain you won’t refuel yourself.
- Deposit and holds. Expect a hold of several hundred dollars on your card on top of the rental cost. Know the amount before you arrive.
- One-way fees. Dropping the car at a different location can add a flat fee — sometimes more than the rental itself on short trips.
- Additional drivers. Most companies charge per extra driver, per day. Some waive it for a spouse or domestic partner.
- Insurance. Know what your credit card and personal auto policy already cover before you pay for the counter’s damage waiver.
Check those six, and you’ll never be surprised at the counter again.
Airport concession and facility surcharges
Here’s the single biggest lever on your rental price, and most travelers never notice it. Rental companies operating at airports pay the airport a cut — concession recovery fees, customer facility charges, sometimes a tourism or stadium tax — and they pass every cent to you as line items.
The gap is real: the identical car from the same company can cost 20–35% more at the airport counter than at a neighborhood branch a few miles away. On a week-long rental, that’s often $100+.
The trade-off is convenience and time. The off-airport location might require a shuttle or rideshare each way, and neighborhood branches keep shorter hours — some close on Sundays or close early, which matters if your flight lands late. Do the math honestly: if the airport location costs $90 more for the week and the rideshare to the off-airport branch costs $25 each way, the branch still wins — but only if the hours work for your flight times.
One more catch: some “off-airport” locations are genuinely close, and some are a 25-minute shuttle ride through traffic. Check the actual address and the shuttle frequency before you commit. A cheap rate that costs you an hour each way isn’t cheap.
Fuel policies: full-to-full vs. prepaid vs. “we’ll fill it”
Fuel policies decide who buys the gas and at what price. There are three common versions, and they are not equal:
- Full-to-full. You pick up the car full and return it full. You pay pump price for exactly what you used. This is almost always the cheapest option and the one to choose by default.
- Prepaid fuel. You buy a full tank from the rental company upfront, usually at a per-gallon rate that’s higher than the local station — and there’s no refund for fuel you don’t use. It only works out if you return the car nearly empty and the company’s rate is close to pump price. That combination is rare.
- “We’ll fill it” (no refuel). You return the car as-is and the company refuels it at a steep per-gallon markup, sometimes double the pump price, plus a service fee. This is the most expensive way to buy gasoline on earth. Avoid it unless you’re running for a flight and the math genuinely doesn’t matter.
The catch with full-to-full: you need to find a station near the return location. Airport returns usually have stations within a few minutes — look one up before you leave for the airport, not while circling the terminal. Keep the receipt until the final charge posts, in case of a dispute.
Deposits and card holds
This one surprises people even when they’ve read everything else. Beyond the rental cost, the company places a hold on your card — typically a few hundred dollars, sometimes $500 or more for premium vehicles — as a security deposit. It’s released after you return the car, but “released” can mean several business days before it disappears from your available credit.
Why it matters: if you’re traveling on a card with a low limit, a $600 hold plus a $400 rental can max you out mid-trip. And debit cards make this worse — holds on debit cards tie up actual money in your checking account, not just credit line, and take longer to release.
The catch nobody mentions: some locations won’t accept debit cards at all, or require extra ID and a credit check if you use one. If you’re planning to pay with debit, confirm the location’s policy in advance — not at 11 p.m. at the counter. A credit card is the safer tool for rentals, even if you pay the bill off immediately.
Sign up for monthly travel guides
One-way fees
Picking up in one city and dropping off in another triggers a one-way (or drop) fee — a flat charge that covers the company’s cost of getting the car back. On paper it’s reasonable. In practice, it can dwarf the rental cost: a $120 three-day rental with a $250 drop fee is not a $120 rental.
The fee varies wildly by route. Popular corridors (say, Los Angeles to San Francisco) often have low or waived one-way fees because the company needs cars moved that direction anyway. Unusual routes can be brutal. There’s no universal rule — you have to price your specific route.
Two ways to soften it: first, compare the one-way fee against the cost of not doing one-way — a return flight, the extra driving days, the extra hotel night. Sometimes the fee is still the cheaper option. Second, if your dates are flexible, shifting pickup or drop-off by a day can change the fee, since it’s driven by fleet needs on that specific day. And if you’re still sorting out the flights for the trip, our flight fare-tracking playbook covers how to time that side of the booking.
Additional drivers and young-driver surcharges
Want your partner or friend to share the driving? Most companies charge for each additional driver — typically a per-day fee with a per-rental cap. The good news: many waive the fee for a spouse or domestic partner, and some corporate or membership programs (AAA, Costco, frequent-renter tiers) include a free additional driver.
The young-driver surcharge is the harsher one. Renters under 25 usually face a daily surcharge — and it’s not small. Some companies won’t rent to drivers under 21 at all, and those that do restrict the vehicle classes. If you’re under 25, this surcharge can easily be the largest single fee on the contract, so price it in from the start rather than discovering it at the counter.
The catch: the additional-driver fee applies even if the second person drives for ten minutes. Register every driver who will touch the wheel — an unregistered driver involved in an incident can void your coverage entirely. The fee is annoying; the alternative is worse.
Insurance and the damage waiver: what you’re actually being sold
At the counter you’ll be offered a menu of protection products with reassuring names: collision damage waiver (CDW/LDW), supplemental liability, personal accident insurance, roadside assistance. Here’s how to think about each before you’re standing at the counter under pressure:
- Collision/loss damage waiver (CDW/LDW). This isn’t technically insurance — it’s the company agreeing not to charge you for damage to the car. It’s also the most expensive item on the menu. Before you buy it, check two things you probably already have: many credit cards include rental car collision coverage as a benefit (usually secondary to your personal auto policy, primary on some premium cards), and your personal auto policy may extend collision and liability to rentals. Call both before your trip and ask specifically about rental coverage — “I think I’m covered” is not coverage.
- Supplemental liability. Covers damage you do to other people and property above the state-minimum liability the rental includes. Worth considering if your personal policy limits are low or you don’t own a car (and therefore have no personal auto policy extending to the rental).
- Personal accident / personal effects. Usually redundant if you have health insurance and homeowner’s or renter’s insurance. This is the easiest “no” on the menu.
- Roadside assistance. Check whether your credit card, auto club membership, or personal policy already includes it.
The honest framework: never decide at the counter. The counter is designed to make you say yes — you’re tired, there’s a line behind you, and the agent is describing worst cases. Make every insurance decision at home, a week before the trip, with your credit card benefits guide and auto policy in front of you. Write down what you decided and why, and bring the note.
One genuine caveat: credit card coverage usually excludes certain vehicle types (trucks, large vans, luxury and exotic cars) and has country exclusions — Ireland, Israel, and Jamaica are commonly excluded, for example. If your trip involves an excluded category, the rental company’s waiver may be your only practical option. Check the exclusions, not just the headline benefit.
TripBuddy may earn a commission if you buy through our links, at no extra cost to you.
Once you know what the real total looks like, put the checklist to work — compare the total rental cost on TripBuddy and see the full price before you commit.
Want one practical, money-saving travel guide like this each week? Join the TripBuddy newsletter and get the next one first.
Last reviewed: September 11, 2026