Fuel first- Gas (gasolina) is around €1.60-1.80 per liter lately, diesel a bit cheaper. A normal hatchback or small SUV gets 5-7 liters/100 km. For 800 km you're looking at 50-60 liters total, so €80-110 for the whole drive. Split two ways that's €40-55 each. Tip: fill up in smaller towns or inland a bit, avoid highway stations where it's pricier. Use apps to hunt cheap pumps.
Accommodation is where you can save big or splurge easy. Budget options rule here. Hostels or guesthouses in smaller towns run €20-40/night per person (dorms or private doubles). Airbnb apartments or local pensões €50-80/night for two. Beachside spots in summer jump to €80-120+, but off-season or shoulder (spring/fall) drops 30-50%. For 10-13 nights, expect €400-800 total for two (€200-400 each). Value moves: book rural or inland a few km from the coast (cheaper, still close), use Booking.com filters for free cancellation, mix in camping (€15-30/night per tent/pitch) if you have gear, especially in Alentejo or Vicentine Coast areas where wild camping is sometimes tolerated (but check rules).
Food stays cheap if you eat local. Breakfast at cafés €3-6 (pastel de nata + galão coffee). Lunch prato do dia (daily special) in tascas or small restaurants €8-12, often soup, main, drink. Dinner grilled sardines, cataplana, or fresh fish €12-18 per person. Seafood markets or supermarkets for picnics save even more. Figure €25-40/day per person eating out mostly, €15-25 if you self-cater breakfast/snacks. For two weeks that's €350-600 each. Pro tips: hit padarias for cheap bread/cheese, buy fruit at local markets, drink tap water (safe almost everywhere), limit fancy restaurants to once or twice.
Tolls and roads - The main highways (A roads) have tolls, especially A28 north, A1, A2 south. Electronic tolls via Via Verde or pay-as-you-go. For full coastal-ish route, expect €30-60 total in tolls if you use highways a lot. But the real scenic drive uses N roads (national) which are free, slower, twistier, but way prettier and no tolls. Stick to N roads 70-80% of the time to cut costs and enjoy the views more. Parking is usually free or €1-3 in towns, beaches often free.
Other bits - Car rental €25-50/day average (economy/manual, unlimited km), add €300-600 for 10-14 days including basic insurance. Attractions mostly free (beaches, viewpoints, walks), paid ones like boat trips to caves €20-40, Sintra palaces €10-20 each. Souvenirs, wine, small entries another €100-200 total.
Rough total per person (solo traveler, mid-budget, 12 days): €1,200-1,800 including rental/gas/food/lodging. For a couple sharing car/room: €800-1,300 each. Super budget (hostels/camping/self-catering): €600-1,000 each possible.
Ways to keep it affordable: Travel spring (April-June) or fall (Sept-Oct) for lower prices and perfect weather. Book lodging 2-3 months ahead for deals. Eat where locals eat, avoid tourist menus. Use BlaBlaCar for short rides if you want to skip driving sections. Pack light to avoid bag fees if flying in.
This drive is all about value, not luxury. Fresh air, empty beaches, cheap vinho verde, grilled fish with sea views, that's the real Portugal payoff. You don't need big money to feel rich on this road. Pace yourself, enjoy the slow turns, and your wallet will thank you. Safe driving out their, the coast is waiting!
