Spain and Portugal power cut: What to do if you’re delayed returning a hire car abroad

Andrea Thompson

ByAndrea Thompson

April 28, 2025
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A widespread power cut across Spain and Portugal is causing disruption to flights, mobile networks, train services and traffic lights.

In Madrid, the mayor has warned people to stay off the roads while the power cut situation is being resolved.
For travellers, unexpected delays like this can create added stress, and few things are more frustrating than racing to return a hire car when time is tight.
Whether you’re delayed by local disruption, stuck in heavy traffic, or facing a last-minute change of plans, worries about extra fees and penalties for returning a hire car late can quickly build.
Fortunately, there are straightforward steps you can take to protect yourself. Ed Sharp, Head of Car Hire at TravelSupermarket, explains what to do if you’re running late and your rights if unforeseen circumstances cause a delay.

Know your rights (and when travel insurance might help)

Check your rental agreement. Some rental companies allow for a short grace period for late returns, often around 30 minutes, while others can charge for a full additional day if you’re late by as little as 15 minutes.
There are often acceptable reasons for lateness, such as flight delays. If you’re covered by travel insurance, you may be able to claim back any unexpected costs providing you have evidence. It’s worth checking your policy to see if car hire excess cover applies.

Check for late return policies

How companies treat lateness isn’t a one-size-fits-all. Some companies are flexible, whereas others adhere to strict rules.
While it’s easy to get caught up in the excitement of your holiday, take some time beforehand to find out what constitutes a ‘late return’ and familiarise yourself with return deadlines and any associated fees.
This knowledge not only helps you make quicker decisions if you encounter delays, but could also influence which company you book with to begin with.

Document the reason for your delay

If your delay has resulted from circumstances that are out of your hands, it’s a good idea to document it.
Take photos or screenshots (like traffic apps, boarding passes, or flight delay confirmations) if you encounter any of these issues to support your case.
This documentation could also be crucial if you later need to make a claim through travel insurance, particularly if your policy includes cover for car hire issues.

Prepare for potential additional charges

Before you return your car, ensure that you have a little extra tucked away in case of an emergency. This may sound simple, but it can work wonders in keeping things as stress-free as possible.

Refuel beforehand, if you can

If your agreement states that you must return the car with a full tank, or the same amount of fuel as you picked it up with, make sure that you stop at a petrol station well in advance. After all, the last thing you want is to be stuck in a massive queue with minutes to spare.
If you’re running late, don’t worry about shopping around for the cheapest price. Topping up conveniently and quickly will be your main priority, and filling with any priced fuel can facilitate significant savings.

Check if you can extend the rental

Some hire companies will let you extend your booking by the hour or day, often for a much lower cost than the late return fees.
If you’re certain you’re going to be late, it’s worth asking about an extension. Even if you no longer need it, securing an extension in advance can give you peace of mind and help you avoid steep penalties.