Portugal is easy to cross in a day, but its best bits — surf beaches down dirt tracks, terraced vineyards above the Douro, hilltop villages with barely a bus a day — sit well beyond the rail network. A new guide from travel writers who spent seven years living next door in Spain lays out exactly when a rental makes sense, what it costs, and the traps that turn a €5-a-day headline into a €60 reality.
The short answer on whether to rent: yes, if you're leaving the cities. Trains and buses link Lisbon, Porto and Faro well, but coverage thins fast in the Alentejo, the Douro Valley and the coastal towns west of Lagos. Off-peak economy rentals can drop to €10–25 a day, and weekly rates often sit under €50 outside summer. July and August double the price, with the same small car climbing past €50 a day, so book a month or two ahead — especially if you need an automatic, which most of the fleet isn't.
One counterintuitive tip: Faro airport is usually the cheapest of the three main pickup points thanks to competition among Algarve suppliers. Lisbon Airport runs from roughly €70 a week for a small car in the guide's sample pricing, with Porto similar. Deposits vary widely — Europcar holds around €300 for a standard car but up to €3,000 for premium categories without extra protection.
The hidden costs are where budgets break. Under-25s pay young driver fees of €6–20 a day. One-way rentals (say, picking up in Faro and dropping in Lisbon) can add €50–150. The Via Verde electronic toll transponder — essential on Portugal's motorways, which are almost entirely cashless — carries its own small daily fee, and unpaid tolls billed later come with handling charges. Insurance upsells at the counter are the classic trap; the guide recommends comparing fuel policy, deposits and insurance tiers side by side before booking, and insisting on unlimited mileage and full-to-full fuel.
Paperwork is straightforward for most: EU licences work as-is, and US, UK, Canadian and Australian licences are valid for stays up to 185 days. If your licence isn't in Latin script, an International Driving Permit is legally required — and many rental counters ask for one regardless. You'll need a credit card in the main driver's name; debit cards mean bigger holds and stricter terms.
On the road, drive on the right, buckle everyone in (fines for missing child restraints run €120–600), and note the blood alcohol limit is 0.05% — or 0.02% for drivers with under three years' experience. A reflective vest and warning triangle must be in the car; rentals almost always include them, but check the boot at pickup.
The smartest strategy for a mixed trip: rent only for the rural legs, and use the Alfa Pendular train between Lisbon and Porto. Parking in both cities is expensive and the old towns predate cars — a car there is pure liability. Save the wheels for the Algarve coast, the cork-oak plains of the Alentejo, or those Douro switchbacks.
First published by Wild Junket.
