Guerin Reviews 

It was very easy and fast to pick-up and return the car. It was also very comfortable and easy to use the shuttle that drives very regularly between the terminal and the office location.
A small detail what could be improved is sharing the info on the exsting damages of the car. They have photos of all the damages and share it via a link you receive by email but they are not mentioned on the contract you sign at pick up.
Overall I was very happy and everything went smoothly with the car we rented for 2 weeks during our holiday.

Check in and return were quick and easy

The car was given to the customer with a lot of defects / damages on the outside of the car

Very organised. Easy pick up. No pushy salesman for extras. Car great condition. I didnt log codition on app in time as I was driving - simply uploaded photos in email exchange later. All good - would recommend.

Excellent service from the Faro team, especially one lady whose name I unfortunately can’t remember. Sixt had made a complete mess of our booking with no car available on site and their customer service was poor, so we tried next door, Guerin, and they had us in a car within 30 minutes.

The staff were incredibly friendly, professional, and efficient throughout the entire process. Returning the car a week later was just as easy, with a quick and smooth checkout.

I highly recommend Guerin for their outstanding customer service and hassle-free experience.

Good car for a reasonable price. Little waiting, highly digital process and smooth, quick processes for handover and return. Can honestly recommend it above the marginally cheaper competitors in Portugal.

Everything went ok until it came to the return of my deposit.
I had two separate contracts to hire two cars over a period of six weeks.
I returned the car on time & in pristine condition &!was advised that my deposit would be returned within 5 working days. A month later, I have still not had either deposit returned. It’s practically impossible to get a response from Guerin/Enterprise via emails which is the only way to contact them. They advised that their 3rd party contractor who processes returns is the issue but they are doing nothing to manage/progress the process. This is terrible customer service, leaving the customer out of pocket, with no ability to get a solution. I will never use Guerin again!

Overall good experience. No waiting time in contract creation, car pick up or return. Car itself was technically ok with a lot of small scratches. Definitely would choose again this car rental company.

Great service, great experience! Staff was friendly and helpful. The car was in good condition.

Overall, the experience was mixed.

The pick-up in Lisbon was disappointing. The facilities are not great, and the process took much longer than necessary. I was charged a $150 one way fee, even though the system was showing $99, and I wasn’t given a clear explanation for the difference. The vehicle also wasn’t clean. We requested a swap, but after a long wait, our request was denied despite there being several identical cars available in the lot.

The drop-off in Porto, however, completely changed the tone of the experience. Daniela was incredibly helpful, professional, and efficient. She handled everything quickly, demonstrated excellent problem-solving skills, and made the return process seamless. She is a great asset to the team.

I hope the pick\-up experience can be improved to match the excellent level of service provided at drop\-off\.

Easy pick up: drop off. Friendly and helpful staff.

Car rental overall was good. Staff was friendly and the process was efficient. Insurance rates should be lower thou.

The system of picking up the car is quick. Available cars are clean and modern. We had a good experience with Guerin.

Car in perfect condition. Friendly and helpful people. No waiting time. Perfect service.

Provide car that are better maintained and don't break down on you

It was excellent

Friendly efficient staff, good quality vehicle, extra bonus that it was upgraded from a manual to an automatic

Check-in / check-out processes were simple and fast. The vehicle was almost brand new and it was in optimal conditions. Very helpful staff.

Rented a BMW 5 Series Touring Hybrid from Guerin for a family holiday in the Algarve (Quinta do Lago/Ancão area). Car was clean, well-maintained, and ready on time at pickup. Return process was quick and straightforward — no arguing over damage, no hidden charges, no drama. Exactly what you want from a car hire company. Would use again.

Avoid this company at all costs. This was genuinely one of the worst rental car experiences I have ever had.

I booked and fully prepaid for my rental through Booking.com, yet when I arrived at Lisbon Airport, Guerin charged me again for the rental. Despite raising this immediately, it has still not been properly resolved.

On top of that, I was charged additional fees that have never been explained. The only thing I did was drive the car approximately 2.5 hours to the Algarve and return it to the agreed drop-off location, for which I had already paid the separate one-way drop-off fee. I have repeatedly asked for a breakdown of the charges, but no one has been willing to explain them.

The most frustrating part is the complete lack of customer service. I have made around 20 attempts to contact them by phone and email. Every email has been ignored, nobody calls back, and to this day I have still not received a proper response.

Mistakes can happen, but refusing to communicate with your customer after taking their money is completely unacceptable.

Incorrect charges, unexplained fees, and zero customer support. There are plenty of other rental companies at Lisbon Airport—save yourself the frustration and rent from one of them instead.