Guerin Reviews 

Terrible experience at Porto Airport in Portugal from the staff to the condition of the cars are completely disgrace. My car was full of dents and scratches. Some where not marked on the paper you are given so be aware of that and make loads of videos and take photos otherwise you'll be charged. The interior of my car was with a funny smell the staff not friendly at all even worse they are not helpful. I asked to change car related to the condition of the interior and the smell while I went inside to speak with a staff member my bag was left inside of the car when I came outside to the vehicle have notice my bag disappeared I was in panic staff couldn't care less no cameras outside after 10 minutes of stress find out a member of staff have moved my bag to another car exactly the same with a different numberplate keep away from this Rent-A-Car I did a complaint in the Red book of the Company and I'm doing exposition of my situation to guerin head office.

From booking, through pick-up up to drop-down everything very smooth and nonproblematic.
No hidden charges and clear rules.

Very easy to pick up the vehicle comapred to my last visit to Portugal 10 years ago. The vehicle was in good condition minus a few bumps that I reported.

The only thing is that since the car was an Electric Hybrid, it could have been charged for me when I picked it up and that Guerin would be able to give an explanation as to how to charge it while in Portugal.

Great expirience. We had an Upgrade for free. Process was easy and fast.thank

It was seamless from start to (nearly) finish. Best rental car experience I’ve ever had. Just back from holiday, so still waiting for final stage being deposit refund.

Evrything was ok and very easy procces to cillect and handover the car.

Staff, Booking process, I had to extend the contract and the Agent was very helpful.

Dropping car off took way too long, un-organized and when flying out it’s very difficult to get to my destination without risking missing my flight.

I had a fantastic experience with Guerin at Faro Airport. The car rental was very cheap, the collection and drop-off were both incredibly quick, and the customer service was excellent throughout. Everything was smooth and efficient from start to finish, which made the whole trip much easier. I will definitely use them again.

Collection and return were easy and fast, friendly staff, car was in perfect conditions and according to reservation

We love Guerin and use them every year.

In terminal-area, 5 min. by shuttle, good prices with all risk insurance, excellent staff (fast, efficient, polite)

Very efficient, good conditions of cars, drop off is hassle free - I always use Guerin when I go to Lisbon

Great value. Excellent service at the airport. Friendly staff. Efficient with minimal wait.

This company operates in an unreliable and unprofessional manner. Do not go there alone, and do not rent without documenting everything: photograph the vehicle, insist on proper invoices for any charge, and bring a witness if possible. As a woman travelling alone, being confronted by three aggressive staff members and pressured into paying without documentation was a genuinely difficult situation — not just poor service.
Roadside assistance is poorly coordinated: phone support and the on-site breakdown team do not communicate, resulting in unresolved issues and broken timeframes.
Staff conduct at the Aeroporto Madeira station is hostile and unprofessional, including dismissing documented facts and confronting customers aggressively. A supervisor was brought in on more than one occasion in an attempt to de-escalate the situation, without success.
Billing is not transparent: charges were collected on site without a proper invoice, and a later formal invoice (€496.69 for “damages” and a “damage management fee”) was issued for an incident the company’s own accident report records as unconfirmed. No supporting evidence has been provided.
Complaint handling is inadequate: a detailed written complaint received only repeated automated responses, with no substantive reply.
Overall, this reflects a pattern of unclear costs, unverified charges, and a lack of accountability. Proceed only with full documentation of every step, and consider not going alone.

Great prices, rapid no fuss pick and and drop-off. Friendly staff. Great vehicle, Sensible amount held on credit card.

Car was as described and collection and return was straightforward.

Everything went super smooth!