Why this guide: about 6,600 people a month search Google for “renting a car in costa rica” (US, DataForSEO Labs, September 2026). This is the answer we would give a client, written to be booked from.
The short answer
- The insuranceThird-party liability (SLI/TPL, from the state insurer INS or its equivalents) is mandatory and never in the online quote — $12–$25 a day; CDW is optional and card-coverable; the $10-a-day quote becomes $35–$55 all-in
- 4x4 needed forMonteverde, the Nicoya Peninsula beyond Tamarindo (Nosara, Santa Teresa, Montezuma), the Osa Peninsula and Drake Bay, the Caribbean south past Puerto Viejo in rain, and any river crossing
- 2WD is fine forSan José–La Fortuna/Arenal, the Central Valley, Jacó and Manuel Antonio, Liberia–Tamarindo–Papagayo, Puerto Viejo in the dry season
The insurance that doubles the price
Costa Rican law requires every rental to carry third-party liability (Seguro de Responsabilidad Civil, sold as SLI, TPL or PLI) — historically through the state's INS, now also via private insurers — at US$12–$25 a day, and it is not in the online rate. Collision damage (CDW/LDW) is optional at $15–$30 a day with a deductible of $1,000–$3,000; premium credit cards (Chase Sapphire Reserve, Amex Platinum) cover it and let you decline, with a printed letter and a larger deposit hold ($1,500–$5,000). Some companies add 'mandatory' extras (roadside, environmental fees, airport fees of 12–13%); read the total. Adobe, Vamos and Alamo/National Costa Rica are known for honest all-in quotes; the aggregators' $8-a-day rates are not.
4x4 or 2WD
The paved corridors — San José to La Fortuna and Arenal, the Central Valley, Jacó, Manuel Antonio, the Pacific highway, Liberia to Tamarindo and the Papagayo peninsula — are fine in a 2WD sedan or small SUV year-round. The Nicoya Peninsula past Tamarindo (Nosara, Sámara, Santa Teresa, Montezuma) is gravel, potholed and has river fords in the wet season; Monteverde's access roads are steep gravel; the Osa Peninsula and Drake Bay are 4x4 or boat only; the Caribbean south past Puerto Viejo toward Manzanillo floods in rain. A 4x4 (Suzuki Jimny, Daihatsu Bego, Toyota Rush or Fortuner) costs $20–$40 a day more and books out in December–April; reserve early. Insurance does not cover river crossings or driving on beaches.
Roads, rules and Waze
Distances are short but slow: San José to La Fortuna is 3 hours for 130 km; Liberia to Monteverde 2.5 hours for 100 km; plan on 40 km/h averages off the highways. Waze is the navigation app that works in Costa Rica (Google Maps sends you down farm tracks); download offline maps. Speed limits are 80–100 km/h on highways, 40–60 on secondary roads, 25–40 in towns, with speed cameras and Tránsito police checkpoints — carry the passport (or a copy with the entry stamp), the licence and the rental contract. Do not drive at night outside towns: no lighting, no shoulders, cattle, pedestrians and cyclists on the road. The rainy season (May–November, worst September–October) turns gravel to mud and closes fords by mid-afternoon; drive in the morning.
Fuel, tolls, parking and the deposit
Fuel is sold at full-service stations at a government-set price (about US$1.30 a litre); pay in colones or by card. Route 27 (San José–Caldera) and a few other roads have small tolls (500–1,000 colones), cash. Park in guarded lots (the 'wachiman' expects a few hundred colones) and never leave luggage visible — car break-ins at trailheads and beaches are the most common crime against tourists. The deposit hold is $1,000–$5,000 depending on the insurance taken; make sure the card limit allows it. Inspect and photograph the car; Costa Rican fleets take punishment and disputes over prior damage are common.
Booking it
Juan Santamaría (SJO) near San José and Daniel Oduber (LIR) at Liberia are the two airports; Liberia is the one for Guanacaste's beaches and Tamarindo, San José for Arenal, Monteverde and the Pacific south. The engine's car rental page books the international and local suppliers with the mandatory liability shown in the total; the Costa Rica destination page has the hotels. If the trip is Arenal-and-Manuel-Antonio from the airport, the chauffeur booker's shared and private shuttles cover those corridors without the counter. See our best time to visit Costa Rica guide — an IDP is not required for English-language licences for stays up to 90 days.
Three things to get right
- Mandatory liability adds $12–$25 a day; compare all-in totals only.
- Monteverde, Nosara, Santa Teresa and the Osa: 4x4, no question.
- Waze, not Google Maps; morning driving in the rainy season; never at night.
