Hiring a car abroad sounds simple.
Pick it up. Drive off into the sunset. Return it. Done.

Except… it rarely works like that.

I say this as someone who has hired cars extensively across Europe, North America, and South Africa, well over 100 bookings at this point, and as someone who has also worked for a car rental company. I’ve stood on both sides of the counter. I’ve seen the good, the bad, and the “how is this even allowed?” moments.

I’m not anti–car hire. Quite the opposite. Hiring a car can be one of the best ways to travel deeper, slower, and with far more freedom. But it’s also one of the easiest ways to accidentally lose a lot of money if you don’t know what you’re actually signing up for.

This article isn’t here to scare you. It’s here to help you avoid the most common rental car mistakes, ideally without learning them the expensive way.

Disclaimer: This post may include affiliate links. If you click on the link and make a purchase, I will receive a small commission at no extra cost to you. Affiliate links help cover the cost of running my website so that I can continue inspiring my readers to explore the world.

Why Car Hire Abroad Is So Easy to Get Wrong

The problem with car hire isn’t that travellers are careless. It’s that the system is built around assumptions.

Same terminology, different meanings.
Same companies, different rules.
“Full insurance” that isn’t actually full.
“Like for like” policies that quietly benefit the rental company more than you.

And all of this tends to happen when you’re jet-lagged, standing at an airport desk, with a queue forming behind you and a clipboard being slid across the counter.

Price comparison alone doesn’t cut it. What really matters is what’s included, and, more importantly, what isn’t.

The most common car rental mistakes

Booking the Cheapest Car: Where Things Start to Go Sideways

I completely understand the instinct to book the cheapest car. Travel is expensive enough as it is, and on paper, a car is a car… right?

Not always.

In my experience, both as a renter and as someone who worked in the industry, the cheapest rentals are often cheap for a reason. And those reasons tend to show up later, when it’s far too late to change your mind.

Common “extras” hiding behind bargain prices include:

• Very high deposits that quietly tie up your credit card
• Mileage limits that punish you for actually travelling
• Large excess fees if there’s any damage
• Unfriendly fuel policies that almost guarantee you lose money
• Punitive late return fees, even for minor delays
• Expensive insurance add-ons pushed at the desk
• Older or less reliable models you didn’t realise you’d agreed to
• Staff or systems that rely on charging for damage, sometimes even charging for the same damage repeatedly

None of this is accidental. It’s how ultra-low daily rates stay low.

The best way to avoid this mistake isn’t to avoid cheap cars altogether, it’s to understand exactly what you’re booking. Look beyond the headline price. Check the mileage, the fuel policy, the excess, and the deposit. Read recent reviews and pay attention to patterns, not one-off complaints.

If a deal looks too good to be true, it often is, just not in ways that are immediately obvious.

Not Paying Attention To The Small Print

These days, I almost always use comparison platforms because they allow me to compare inclusions, not just price. Mileage, fuel policy, insurance excess, these things matter far more than saving a tenner.

And I learned that the hard way.

Mileage: The €600 Lesson I Only Learned Once

Many years ago, I rented a car in Spain for what turned out to be an incredible three-week road trip. Coastlines, villages, long lunches, zero regrets… until I returned the car.

I hadn’t properly checked the mileage allowance.

I’d gone over it.
By a lot.

That mistake cost me €600.

I have never made it again.

Unlimited mileage versus capped mileage can make or break a trip, especially in places like Europe or South Africa where distances add up quickly. Always check it. Always.

Fuel Policies: Where Companies Quietly Win

Fuel is another common trap.

My strong preference is full to full, you receive the car with a full tank, and you return it with a full tank. Clean, fair, transparent.

Some companies operate a like-for-like policy. In theory, that sounds reasonable. In practice, it often isn’t.

You might be given a car with a quarter of a tank. Now it’s on you to guess how much fuel to put back in. Most people don’t get it exactly right, and the rental company quietly wins when you return it with more fuel than you collected it with.

This isn’t always malicious. But it is something you need to be aware of.

Insurance: The Bit People Skip, and the Bit That Hurts the Most

This is where my time working in car rental really shaped my perspective.

I hated it when customers declined extra insurance. Not because I earned commission. I didn’t. But because I knew what often happened next.

In many cases, damage isn’t caused by the driver at all. You park at a supermarket. You come back. Someone else’s trolley has dented the door. Another car has clipped your bumper. Suddenly, that damage is your responsibility.

Those conversations were the worst. Especially when someone insisted they’d been careful, because very often, they had been.

Whether you choose to buy insurance directly from the rental company (which is convenient, but often expensive) or use an external provider like RentalCover, the key thing is this:

Always have a clear insurance plan.

With external insurance, you’ll usually need to pay for damage upfront and claim it back later. That’s not a flaw, it’s just how it works. As long as you know that in advance, you can decide what level of hassle you’re comfortable with.

Insurance is boring.
Unexpected bills are not.

Not Having the Required Documentation (Yes, Even If You’ve Pre-Booked)

This one catches people out more often than you’d think.

Many travellers book their car weeks in advance, pay for it, receive a confirmation email… and assume that’s the hard part done.

Then they arrive at the desk, and the car isn’t released.

Even if you’ve pre-booked and paid in full, the rental company still has to verify you, not just the reservation. And if you’re missing the required documents, they are fully within their rights to refuse the handover.

Typically, you’ll need:

• A valid driver’s licence
  • In English
  • And usually held for at least one year
• An International Driving Permit
  • Required if your licence isn’t in English
• Your passport
• A credit card in the main driver’s name
  • This is essential for the security deposit
  • Many places don’t accept debit cards, it needs to be a credit card. (I’ve made that mistake too!)
• Your booking confirmation

Depending on the country and rental company, you may also be asked for:

• Proof of insurance (if you’re not taking insurance through the rental company)
• Return or onward flight details

A crucial detail people often miss: these documents usually need to be originals, not photos or screenshots.

Requirements can vary by country, by rental company, and sometimes even by individual location. So if you’re hiring a car somewhere unfamiliar, or crossing borders, it’s worth checking the specific requirements in advance rather than finding out at the desk.

Because “but I’ve already paid” won’t help you if the paperwork doesn’t line up.

Not Inspecting Your Vehicle Properly at Pick-Up (This One Can Save You Hundreds)

Inspecting the car properly before you leave the rental lot is non-negotiable.

It takes five minutes.
It can save you hundreds… sometimes more.

Most travellers skip it. They’re excited. They’re tired. They just want to get going. I get it.

I’ve also been the person standing at a desk being told I caused damage I knew I hadn’t caused.

Luckily, I’d taken photos. When I zoomed in, really zoomed in, that damage was already there.

Case closed.

My non-negotiable inspection routine

I don’t do quick glances anymore. I do documentation.

• Take both video and photos — a slow walk-around video, then still images
• Photograph in quarters — front left, front right, rear left, rear right, middle, roof, sill, inside the boot
• Check the sneaky places:
  • The sills (the metal under the doors)
  • The roof
  • Bumpers and corners
  • Wheels and alloys
  • Mirrors, lights, and the windscreen

To spot tiny dents, do something slightly ridiculous but very effective: squat down and move slowly side to side. Reflections reveal damage you won’t see otherwise.

Also:

• Check tyre tread
• Check for a spare tyre and jack
• Glance inside for obvious damage

Before you leave the lot, back everything up to the cloud. If your phone disappears, your evidence doesn’t.

This isn’t paranoia. It’s protection.

“Free Upgrades” Aren’t Always Free: My £1,000 Mistake

This one still stings.

I once hired a car to drive into Lesotho. I’d booked a standard vehicle. When I mentioned where I was going, the agent smiled and asked:

“Would you prefer something with higher clearance?”

It sounded kind. Casual. Like a favour. I assumed he was being helpful. I even tipped him.

When I returned the car, I was charged an extra £1,000.

That upgrade wasn’t free at all.

Sometimes agents are genuinely trying to help. Sometimes they’re following system prompts. Sometimes it’s just poor communication. But the responsibility still lands with you.

Always confirm whether an upgrade is complimentary or chargeable. Always check the revised rate before signing anything.

My Non-Negotiables When Hiring a Car Abroad

After hundreds of rentals, these are my absolute basics:

• Unlimited mileage
• Full-to-full fuel policy
• A clear insurance plan (I use annual excess cover)
• Photos and video at pickup and drop-off
• Question anything that sounds generous

If something doesn’t make sense, ask. If it still doesn’t make sense, don’t sign yet.

Final Thoughts: Car Hire Is Still Worth It, When You Do It Right

Despite everything I’ve shared here, I still hire cars all the time. Because when it goes right, it opens up travel in a way very little else does.

You reach quieter places.
You move at your own pace.
You stop when something catches your eye.

The trick isn’t paranoia. It’s awareness.

Do the boring admin properly (mileage, fuel, insurance, paperwork) and the adventure gets infinitely better.

And ideally, much cheaper too.