I-VII 07:00 – 00:00
Guerin is one of the strongest picks at Porto Airport: a 100% Portuguese company in the Salvador Caetano group and the official Enterprise Rent-A-Car franchisee in Portugal, it scores 8/10 on DiscoverCars and has won DiscoverCars' Excellent Car Rental Service Award at Porto for multiple years. You book Guerin but get Enterprise-standard service and network. Pickup is via a desk at the terminal exit and a short shuttle (call the internal phone for instructions). The main thing to watch: as with most majors, do not let the desk sell you full insurance you already bought through the booking site.
Average daily rates at Porto Airport (OPO) by season
Economy/compact, booked ~4 weeks ahead, EUR
| Season | Economy | Compact | Automatic |
|---|---|---|---|
| Low (Nov–Feb) | €8–18 | €12–24 | €22–38 |
| Shoulder (Mar–May, Oct) | €16–30 | €22–40 | €35–60 |
| Peak (Jun–Sep) | €30–50 | €40–65 | €55–95 |
Once you exit arrivals, a Guerin-branded desk on the right has an internal phone for shuttle instructions to the nearby office, where the contract and car check happen. It is a quick, well-signed process; the onsite online registration is a little clunky but staff guide you through it.
DiscoverCars 8/10 and multiple Excellent Service Awards at Porto. Enterprise-standard service, newer fleet, dependable. Decline duplicate insurance at the desk if you already have cover.
DiscoverCars 8/10 with an in-terminal counter (level 0 arrivals). Convenient and modern, but among the pricier names and with some insurance-clarity complaints.
Lower headline prices but bigger deposits and refund delays. Fine for confident, well-prepared renters; Guerin is the calmer choice for similar value once cover is added.
DiscoverCars verified scores at Porto (2026)
/10, verified-rental ratings
Guerin includes CDW with an excess blocked on your card. If you already bought full cover through the booking platform, keep the documents and decline the desk’s offer to sell it again – a common point of friction. Otherwise, stand-alone excess insurance (€4–7/day) is cheaper than the counter waiver.
The A28 coastal motorway north to Viana do Castelo is toll-free since 2025 (with the A24/A25). The A1 (south to Aveiro/Coimbra/Lisbon), A3 (north to Braga and Spain) and parts of the A4 remain tolled, mostly electronic. With a rental, take the company’s Via Verde transponder (small daily fee) or expect tolls plus a €25–50 admin fee billed afterwards. Fuel in May 2026 is about €1.95/L petrol and ~€2.00/L diesel; supermarket pumps cheapest. Return the car full.
Guerin often matches budget brands once their deposits and forced cover are added.
Avoid paying twice for cover at the desk.
A car opens up the Douro Valley (about an hour east), the toll-free A28 coast north to Viana and the beaches, and Braga/Guimarães. Porto’s historic centre itself is walkable, so many visitors collect the car when they leave the city.
Not exactly – Guerin is a 100% Portuguese company in the Salvador Caetano group and the official Enterprise Rent-A-Car franchisee in Portugal since 2012, so you book Guerin but get Enterprise-standard service and the Enterprise/Alamo/National network.
A Guerin desk is on the right as you exit arrivals, with an internal phone for shuttle instructions to the nearby office where you collect the car. It is quick and well signed.
Yes – DiscoverCars 8/10 and multiple Excellent Car Rental Service Awards at Porto, with a newer fleet and dependable service.
If you already bought full insurance through the booking site, decline the desk’s offer to sell it again – that duplicate-insurance push is the main complaint. The onsite registration is slightly clunky but staffed.
The A28 north is toll-free since 2025; the A1 (south) and A3 (north to Braga/Spain) are tolled, mostly electronic, with a €25–50 admin fee on rentals. Take the Via Verde device if offered.
Yes, a credit card in the main driver’s name for the security deposit, which is blocked (not charged) at pickup.
Disclosure: Auto Jardim participates in the DiscoverCars affiliate program. Reviews are based on Trustpilot, Google Maps, traveller forums and direct experience. We only recommend companies we would use ourselves.
Last updated: May 2026. Prices and policies change – always verify directly with the rental company.
