Top 5 Mistakes to Avoid When Renting a Car Abroad

title: "Top 5 Mistakes to Avoid When Renting a Car Abroad" excerpt: "From insurance jargon to hidden deposits, these five mistakes cost travellers hundreds of euros every single day. Here's how to avoid each one." metaTitle: "Top 5 Mistakes to Avoid When Renting a Car Abroad | Gsirigo" metaDescription: "The five costliest car rental mistakes — skipped documentation, unnecessary insurance, missing fuel rules, one-way traps and wrong pick-up points. Avoid them now." image: "https://images.unsplash.com/photo-1672870152817-29ba68ec732e?q=80&w=1600&auto=format&fit=crop" date: "2026-08-15" readingTime: "6 min read" widget: partner: "rentalcars"

Most people don't lose money on car rentals because of one big disaster — they lose it through a dozen small, avoidable mistakes that stack up. Here are the five we see most often, based on how the major rental programs actually work.

1. Booking without reading the fuel policy

Fuel rules come in several flavours: full-to-full (you return a full tank), full-to-empty (you pay for a full tank upfront and bring it back empty) and prepaid refuelling. The last two are expensive — you're paying the supplier's inflated fuel price. Choose full-to-full whenever you have the option and know what your booking includes before you confirm.

2. Buying insurance you already have

At the counter, you'll be offered a suite of waivers and packages. Some of them duplicate cover you already hold — through your credit card, your travel insurance, or included in your booking. The cheapest insurance is the one you don't need to pay for twice. Review what you already have before you travel, and only add cover for the gaps.

3. Not checking the minimum driver age

Renting a car at 21 or 22 often triggers a young-driver surcharge of €10–€30 per day, and some categories simply aren't available under 25. Booking a small car category and finding out at the desk that you can't drive it is a classic rookie mistake. Check age limits and fees during the search.

4. Underestimating one-way fees

Pick up in one city, return in another? That's usually possible, but a one-way fee of €50–€200 may apply — or the return city may not even be offered. If your trip is a one-way road trip, look for programs with generous one-way policies and factor the fee into your comparison.

5. Skipping the pick-up point comparison

The airport counter is the most expensive desk in town. Renters routinely save 20–40% by comparing airport, city-centre and train-station offices. Even when the airport price looks fine, the alternatives are worth one look.

Search once, compare everything

These five checks take five minutes. A comparison search shows you terms and prices side by side — start here:

Frequently asked questions

Is it cheaper to rent at the airport or in the city? Almost always cheaper in the city or at off-airport depots, often by 20–40%. Factor in the transfer cost before switching.

Do young drivers always pay more? Most suppliers apply a surcharge for drivers under 25, and some under 21. A few specialist programs waive it — compare before accepting the first price.

What happens if I return the car with a full-to-empty policy? Nothing to save — you've already prepaid a full tank. The mistake is choosing that plan when full-to-full is available.