You’ve figured out when you need a rental car and have found the best option, but before you book, let’s make sure you’re booking the right vehicle for your trip.

But before you click “book,” make sure you’re choosing the right vehicle for your trip. A few simple checks now can save you money, time, and frustration once you arrive.

The first thing to know: the credit card used for booking must be in the name of the primary driver. Most Irish car rental companies won’t accept prepaid or debit cards when reserving a vehicle, and those that do usually require a credit card for any holds, such as insurance or refueling. If you travel without one, you could find yourself unable to collect your car.

Your driver’s license must be valid for the entire duration of your trip. It can’t expire mid-travel, and you’ll need the physical card – digital versions aren’t accepted.

Yes, both of these situations have caused real headaches for travelers. Don’t let them happen to you.

Smaller cars are cheaper to rent and fill, and easier to navigate on narrow Irish roads – but smaller isn’t always better.

Two medium suitcases will usually fill the trunk of a compact car. Carry-ons and personal bags may have to go on the back seat, which isn’t ideal for security or comfort. It’s always better to have extra space than not enough.

Traveling with children? Remember that car seats take up room, and vehicles in Ireland are often narrower than their North American equivalents. Three car seats across a back seat is nearly impossible.

If you’re traveling with five people, rent a seven-passenger vehicle (a people mover or estate car) so everyone has enough space for luggage and comfort.

When you book a car online, you’re choosing a category, not a specific make or model. That “or similar” note means you’ll get something comparable, not necessarily the exact car pictured.

For example, you might book a Hyundai Tucson but end up with a Nissan Qashqai. Both are considered intermediate SUVs, but they differ in luggage capacity. Always review the seating and baggage details for your chosen category before confirming your reservation.

If you’re unsure, it’s worth moving up one size. You’ll never regret having too much space – but you will regret having too little.

Prices rise with demand, and the first cars to go are automatics and larger vehicles (minivans and 9 passenger vans).

For summer travel (May through mid-September), book at least four months in advance to secure the best options. For off-season travel, a month ahead usually works fine, especially if you can drive manual.

Look for a reservation that includes free cancellation so you can rebook if prices drop. And always book through the Irish version of the company’s website (.ie) when using international companies for accurate pricing that includes taxes and insurance.

Once you’ve set your travel dates, and know when you need a vehicle, I recommend reserving the car right away – it’s one less thing to worry about as your trip approaches.

Most companies rent to drivers aged 25 to 74 without issue.

If you’re under 25, expect limited vehicle categories and a surcharge. Currently, Sixt is the only major company renting to drivers under 25, and they charge for that privilege.

If you’re 75 or older, some companies may require a doctor’s note or proof of recent driving experience. For a full list of senior policies, visit irelandfamilyvacations.com/rent70+ for details on which companies make the process easiest.

Each company’s rules vary, especially international brands like Enterprise or Hertz that share global systems. If you’ve had trouble renting with a company elsewhere, it may carry over to Ireland, so check in advance.

If you’re traveling with multiple drivers, make the one in the easiest age category the primary renter. Secondary drivers under 25 or over 75 can face extra fees or paperwork, so know the policies of the comapny you are using and be prepared for them.

Adding a second driver usually costs more, so only include one if you’ll both be driving.

GPS units and toll devices aren’t necessary and don't need to be added in advance. Both can be added at pickup if you change your mind.

If you’re traveling with children and need car seats, reserve those ahead of time so they’re ready when you arrive. Supplies are limited, and buying one last minute isn’t ideal.

Choosing the right rental car in Ireland is about more than price. It’s about matching your car, timing, and details to your travel plans – and avoiding surprises at pickup.

Next in the series: what to expect when you collect your rental car, including damage checks, documentation, and airport pickup and return tips at Dublin and Shannon.

Traveling in Ireland podcast episode 302

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