I-VII 06:00 – 00:00
Dollar is the budget-oriented arm of the Hertz family, and at Porto Airport (OPO) it offers mid-range prices with global backing – economy cars from around €10–18/day ($11–$20) in low season. It's a no-drama choice if you want a recognisable brand without full Hertz rates, but it's one of many companies at OPO, and the best local value operators often undercut it. This guide covers Dollar in Porto specifically, the real prices, how it compares, and the northern-Portugal toll and insurance traps to avoid.
Dollar operates at Porto Airport as part of the Hertz family, offering mid-range prices with global backing.
Porto Airport (OPO) is a large, competitive market, which keeps prices reasonable outside peak summer. Expect roughly the following in 2026:
Average Daily Rates at Porto Airport 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 |
Dollar typically sits mid-table – cheaper than Hertz, pricier than the best local value operators.
Estimated rental cost by trip length
from €10/day
Illustrative — daily rate × days at the lowest 2026 starting price; real prices vary by season & demand.
Porto Rental Budget Calculator
Compare live Porto car rental prices →Rate prefilled with a low-season economy starting price; change it for your dates and season.
Dollar is part of the Hertz family (with Thrifty and Firefly), so you get a global reservation system, a generally well-maintained fleet, and operations often shared with the Hertz desk at Porto Airport.
At OPO, Dollar is handled through the Hertz airport operation, giving you the reassurance of a major brand for breakdowns, one-way drops and after-hours support. As with any big chain, the counter will offer insurance and upgrades – decide what you want before you arrive.
The subject of this guide – a dependable middle-ground choice: cheaper than Hertz, with the same global support and a decent fleet. Watch the counter upsell, and compare against the best local value operators before booking.
A well-rated Portuguese national brand that often undercuts the global chains while keeping service high. Worth a direct quote and usually flexible on documentation.
The strongest international brand at Porto for a newer fleet and a predictable process, with a terminal desk. Pricier; watch the upsell.
A dependable major with a broad fleet and good automatic availability – a safe fallback at OPO.
Aggressive upsells, fuel and damage disputes, and one of the lowest Trustpilot scores in the industry.
Cheap online but notorious for strict fuel rules, toll fees and excess disputes at return.
Also a Hertz-family brand, but its budget positioning draws 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 Porto 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 |
The A1 (Porto–Lisbon) and the A3 (to Braga) still use cash/card booths. Several former-SCUT roads – the A28 to Viana and the A4 to Vila Real – became toll-free in 2025; the A41/A42 ring roads remain electronic. Confirm Dollar's toll arrangement at pickup if you'll use the electronic roads.
| Route from Porto | Road | Approx. Toll |
|---|---|---|
| Porto → Lisbon | A1 | ~€25 (booth) |
| Porto → Braga | A3 | ~€5–6 |
| Porto → Aveiro | A1 | ~€6–8 (booth) |
| Porto → Viana do Castelo | A28 | Free (since 2025) |
Porto fills up in summer; automatics go first.
See the market, then check value operators directly – and compare Dollar against its sister brands.
Cheaper and more available than automatics.
Buy third-party excess cover beforehand.
Confirm at pickup to avoid later fines.
Refuel before drop-off.
The UNESCO terraced vineyards, with port-wine quintas, tastings and breathtaking viewpoints.
Braga's Bom Jesus sanctuary and the birthplace of Portugal in Guimarães, north on the A3.
The “Portuguese Venice” and the striped beach houses of Costa Nova, south on the A1.
Atlantic beaches and fishing villages along the green northern coast.
Portugal's only national park, with mountains, lagoons and granite villages.
Dollar is a solid mid-range choice – part of the Hertz family, so you get global backing and a well-maintained fleet, at prices below Hertz itself. The best local value operators are often cheaper, so compare before booking.
At OPO, Dollar is handled through the Hertz family operation, so you collect at or near the Hertz desk. Check your voucher for the exact instructions.
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. Dollar typically sits mid-table.
The A1 (to Lisbon) and A3 (to Braga) use cash/card booths. The A28 to Viana and the A4 to Vila Real became toll-free in 2025; only the A41/A42 ring roads remain electronic. Ask Dollar for a Via Verde device only if you'll use those.
Dollar is part of the Hertz family (with Thrifty and Firefly). It shares the reservation system and often the airport operation, but is positioned as a more budget-friendly brand than Hertz.
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.
