Viana do Castelo – the elegant jewel of Portugal's green Costa Verde – is best explored by car, and there's great news for 2026: the A28 motorway linking it to Porto became toll-free in 2025, so the scenic hour-long drive north now costs nothing in tolls. Most visitors rent at Porto Airport (OPO), about an hour south, where economy cars start around €10–18/day ($11–$20) in low season. This guide covers renting for Viana do Castelo: the real prices, the companies worth trusting, the toll picture, and the best drives along the northern coast.
Viana do Castelo, on the green Costa Verde, is an easy – and now toll-free – drive north from Porto.
Viana has no airport of its own, so most visitors rent at Porto (OPO), about an hour south, then drive up the now-free A28. Expect roughly the following in 2026:
Average Daily Rates (Porto / Viana) by Season
Booked 4–6 weeks in advance, prices in EUR
| Season | Manual Economy | Manual Compact | Automatic Compact |
|---|---|---|---|
| Low (Nov–Feb) | €10–18 | €14–22 | €26–40 |
| Shoulder (Mar–May, Oct) | €18–28 | €22–36 | €36–52 |
| Peak (Jun–Sep) | €30–45 | €36–55 | €52–80 |
Pick up at Porto Airport for the widest fleet and best prices, then drive up the toll-free A28.
The standard choice – the widest fleet and most competitive prices, about an hour south of Viana on the A28 (now toll-free). Collect on arrival and drive north.
Viana is on the Porto–Valença rail line, so some visitors arrive by train and pick up a car locally for day trips. Local pickup options are more limited than at the airport – book ahead.
A well-rated Portuguese brand that often undercuts the global chains while keeping service high. A reliable, recognisable choice for the north.
The strongest international brand at Porto for a newer fleet and a predictable process. Pricier; watch the upsell.
A dependable major with a broad fleet and good automatic availability – a safe fallback at OPO.
Local Porto companies frequently beat the chains on price and flexibility. Worth a direct quote alongside the comparison sites for the drive north.
Aggressive upsells, fuel and damage disputes, and one of the lowest Trustpilot scores in the industry.
Cheap online but notorious for strict fuel rules and excess disputes at return.
Low headline prices but repeated complaints over deposit holds and fuel policy. Read the terms carefully.
Basic CDW with an excess of €1,000–€1,800, blocked on your card. Tyres, glass and underbody usually excluded.
Super CDW to zero the excess is €15–25/day – €105–175 a week.
Standalone excess insurance (€4–7/day) bought before you travel covers the excluded items and refunds any excess charged. Buy it and decline the counter upsell.
Insurance Cost Comparison: 7-Day Northern Portugal Rental
2026 pricing
| Option | Daily Cost | 7-Day Total | Covers Tyres/Glass? |
|---|---|---|---|
| Basic CDW (included) | €0 | €0 | No |
| Counter Super CDW | €15–25 | €105–175 | Sometimes |
| Third-party excess cover | €4–7 | €28–49 | Yes |
Good news for the Viana route: the A28 (Porto–Viana–Caminha) became toll-free in 2025, as did the A4 to Vila Real. The A1 (to Lisbon) and A3 (to Braga) still use cash/card booths, and the A41/A42 ring roads around Porto remain electronic.
| Route | Road | Toll |
|---|---|---|
| Porto Airport → Viana do Castelo | A28 | Free (since 2025) |
| Viana → Caminha / Spanish border | A28 | Free |
| Viana → Braga | A27 / A3 | A3 booth (~€2–3) |
Praia do Cabedelo, near Viana do Castelo – one of northern Portugal's best surf and windsurf beaches.
The north fills up in summer; automatics go first.
See the market, then check Guerin and local Porto operators.
Cheaper and more available than automatics.
Buy third-party excess cover beforehand.
No transponder needed for the Porto–Viana run.
Refuel before drop-off.
The hilltop basilica with one of Europe's great views over the Lima estuary, plus Viana's handsome historic centre.
A superb surf and windsurf beach across the river – one of the best on the northern coast.
The lush Minho region up the now-free A28, with the riverside town of Caminha on the Spanish border.
Portugal's only national park – mountains, waterfalls, lagoons and granite villages.
Portugal's second city – an easy toll-free run south on the A28.
Most visitors collect at Porto Airport (OPO), about an hour south, which has the widest fleet and best prices, then drive up the toll-free A28. Local pickup in Viana is possible but more limited – book ahead.
No longer – the A28 became toll-free in 2025, so the Porto–Viana drive costs nothing in tolls and needs no transponder. The coastal route is scenic and free.
From Porto, low-season manual economy cars start at €10–18/day ($11–$20). Shoulder season is €18–28/day and peak summer €30–45/day, with automatics more.
The town centre is walkable, but a car is the best way to reach Praia do Cabedelo, the Minho region, Peneda-Gerês and the coastal villages – and the toll-free A28 makes it cheap to get around.
For value, Guerin and local Porto operators are excellent; Sixt and Europcar are the reliable international choices with terminal desks. Avoid Goldcar, Firefly and Klass Wagen unless you read the terms carefully.
It's cheaper to buy standalone excess insurance (€4–7/day) before you travel than the counter Super CDW (€15–25/day). Third-party cover also includes tyres, glass and underbody.
Disclosure: Auto Jardim participates in the DiscoverCars affiliate program. Our company reviews are based on Trustpilot scores, Google Maps reviews, traveler-forum feedback and direct experience. We only recommend companies we would use ourselves.
Last updated: June 2026. Prices and policies change – always verify directly with the rental company.
