$37 Car Rental San Marcos, TX

These San Marcos insights are based on real traveler data from Expedia, aggregated using AI to help you plan your trip. Updated: September 10, 2026.

Reasons to book a car rental in and around San Marcos

Renting a car in San Marcos provides the freedom and flexibility to explore the area at your own pace. With a rental vehicle, you can easily visit key attractions such as Wonder World Cave & Adventure Park, which offers outdoor adventure experiences, and the John J. Stokes Sr. San Marcos River Park, perfect for family outings. The Aquarena Springs Museum adds a cultural touch to your itinerary. Conveniently, you can also travel to nearby destinations like Martindale, just 7 miles away, where you can enjoy the San Marcos River and other attractions. Downtown San Marcos features the Charles S. Cock House Museum and scenic rivers, adding to your city exploration. For those seeking outdoor experiences, Rio Vista is a great neighborhood to visit, showcasing the beautiful Comal River and attractions like the Wonder World Cave & Adventure Park. A rental car allows you to manage your luggage easily, accommodating family needs while providing the convenience to craft your travel plans without the constraints of public transport. Whether you're traveling with family or looking for adventure, a rental car enhances your experience in and around San Marcos.

Most popular car rentals in San Marcos

• Premium: This car type accommodates up to 5 travelers and has space for up to 4 large suitcases. It's an excellent choice for business travelers and couples looking for comfort and style during their trip in and around San Marcos. With a premium vehicle, you can enjoy a higher level of luxury while exploring the area at your own pace.
• Economy: Perfect for solo travelers, couples, or families, this option comfortably fits 5 travelers and allows for up to 2 medium suitcases. The economy car is a budget-friendly choice that provides the essential features for navigating around San Marcos without sacrificing convenience. It's ideal for those who prioritize value while exploring the local attractions.
• Midsize SUV: This versatile vehicle accommodates 5 travelers along with up to 3 large suitcases, making it suitable for families, couples, or small groups. The midsize SUV offers a balance of space and comfort, perfect for those who need extra room for both passengers and luggage. This option is great for enjoying the freedom of travel while ensuring a comfortable ride through San Marcos and its surroundings.

Top rated car suppliers in San Marcos

• Hertz: With a rental location conveniently situated in San Marcos, Hertz is a favored choice for travelers seeking flexibility and ease. Known for its reliability, Hertz offers a selection of Midsize and Economy vehicles, perfect for navigating the local attractions or embarking on road trips. Their commitment to customer satisfaction ensures a smooth rental experience, allowing you to focus on enjoying your visit to San Marcos.
• Enterprise: Enterprise boasts two rental locations in San Marcos, making it an accessible option for many travelers. This supplier is known for its excellent service and diverse vehicle options, primarily featuring Midsize and Fullsize cars. With a strong focus on customer satisfaction, Enterprise provides the convenience and reliability needed for exploring San Marcos and its surroundings at your own pace.

Where to stay in and around San Marcos

• New Braunfels: Located 17 miles from San Marcos, New Braunfels is a vibrant city known for its outdoor activities and family-friendly experiences. Visitors can enjoy the scenic beauty of the Comal River and Guadalupe River, both ideal for outdoor adventures. Landa Park offers a delightful urban park experience perfect for families. Additionally, the area features popular attractions like water parks and shopping centers, along with options for wine and distillery tours, making it a great base for exploration.
• Wimberley: Situated 12 miles away from San Marcos, Wimberley is a charming city favored for its romantic outdoor settings and stunning scenery. Key highlights include the serene Jacob's Well Natural Area and the family-friendly Blue Hole Regional Park, both excellent spots for nature lovers. For those seeking adventure, Wimberley Zipline Adventures provides thrilling experiences. The local wineries and distilleries add a unique touch to your stay, making it a perfect getaway for couples and families alike.
• Rio Vista: This neighborhood is located in proximity to San Marcos and is ideal for outdoor enthusiasts and families seeking scenic experiences. The San Marcos River is a highlight, offering opportunities for recreation and beautiful views. Nearby, you can explore the Comal River or have fun at Wonder World Cave & Adventure Park, which caters to families and adventure seekers. With local shopping centers and educational venues, Rio Vista provides a well-rounded experience for visitors.

10 tips to save on your car rental in and around San Marcos

1. Use filters to find the right car: Refine your search by vehicle type and specific features. Whether you need a spacious SUV, a stylish convertible for summer drives, or an economical car for budget-friendly travel, utilize the filters on Expedia to discover the perfect fit for your journey.
2. Book in advance to help lower costs: Rental prices can vary based on demand, so it's advisable to reserve your vehicle well ahead of your trip. By booking early, you're more likely to obtain lower rates and enjoy greater availability, particularly during peak travel seasons.
3. Consider a smaller car for savings: Smaller vehicles typically come with lower rental costs and are easier to maneuver and park in crowded areas. Mid-size cars strike a good balance between affordability, comfort, and fuel efficiency.
4. Age guidelines: Drivers under 30 may encounter higher deposits or daily surcharges, and certain types of vehicles—such as SUVs or premium models—might be unavailable. This can also impact renters aged 70 and older. Always verify the age requirements before making a reservation.
5. Check fuel policies: Some rental agreements require a full-to-full fuel policy, which means you must return the car with a full tank to avoid additional fees. This is generally the most favorable option. Others may offer full-to-empty or prepaid fueling choices, which are also acceptable. Just ensure you return the car empty in that case.
6. Save on city and airport pickups: Picking up your rental car at airports often incurs a surcharge, but the convenience may justify the extra cost.
7. Know your payment options: Most car rental companies primarily accept credit cards for payment.
8. Understand your insurance coverage: Car rental insurance can help you avoid unexpected expenses and provides peace of mind in case of unforeseen issues during your trip. Adding car rental insurance while booking through Expedia is straightforward.
9. Consider unlimited mileage: If you plan on taking long road trips, seek rentals that offer unlimited mileage to prevent additional charges.
10. Bring your driver's license and ID: A valid driver's license is necessary to rent a car.

Best time to rent a car in and around San Marcos

The best value period to rent a car in and around San Marcos is January and February, when both prices and demand are relatively low. September can also be a quieter time to rent, with slightly lower prices and demand. However, April tends to be the most expensive month, with high demand and increased rental rates. The months leading up to April, especially March, also see higher demand and average prices, making it a busier time for rentals.

Calendar Month	Temperature	Precipitation	Cloudiness	Demand	Pricing
January	51.4°F (10.8°C)	Light Rain	Mostly Sunny	Average	Slightly Low
February	54.0°F (12.2°C)	Light Rain	Mostly Sunny	Slightly Low	Slightly Low
March	61.7°F (16.5°C)	Light Rain	Mostly Sunny	Slightly High	Average
April	68.0°F (20.0°C)	Light Rain	Mostly Sunny	Slightly High	Slightly High
May	74.5°F (23.6°C)	Light Rain	Mostly Sunny	Average	Average
June	81.3°F (27.4°C)	Light Rain	Mostly Sunny	Average	Slightly High
July	84.2°F (29.0°C)	Light Rain	Mostly Sunny	Slightly High	Average
August	85.3°F (29.6°C)	Light Rain	Mostly Sunny	Average	Average
September	79.5°F (26.4°C)	Light Rain	Mostly Sunny	Slightly Low	Slightly Low
October	70.3°F (21.3°C)	Light Rain	Mostly Sunny	Slightly Low	Slightly High
November	59.9°F (15.5°C)	Light Rain	Mostly Sunny	Average	Average
December	53.8°F (12.1°C)	Light Rain	Mostly Sunny	Average	Average

Finding the cheapest car rentals in San Marcos

Using our Search Wizard

If the deals that are available on our page do not suit your needs, then enter San Marcos into the search wizard at the top of the page. We will compare all the best deals available for your car rental in San Marcos and provide you with a list of the cheapest options, with no added fees.

Renting a car in San Marcos

Pay at pickup is available, so you don’t have to worry about spending your money until you arrive at your vehicle in San Marcos. We partner with reliable partners that guarantee an enjoyable experience for solo travelers, couples, and families. Package your car with a flight or hotel to unlock even more savings from Expedia.

Expected prices in San Marcos

Prices are subject to seasonal change depending on when you decide to arrange your car rental but right now you can book from $37.

Flexibility & Cancellation

Most car suppliers offer penalty-free cancellations, so you don’t have to worry about losing money if your plans change. To cancel your booking log into your account through the Trips portal. Click manage booking and cancel this car. If you needed to alter your booking, then you can create a new one once you have canceled.

We all love being rewarded

One Key members save 10% or more on select hotels, cars, activities and vacation rentals. Not only that, earn OneKeyCash for every dollar spent on eligible hotels, vacation rentals, flights, car rentals, and more when you book across our family of brands: Expedia, Hotels.com and VRBO. Learn more and join today.

Car classes available from Expedia in 2026

The classes of vehicles available will change depending on your chosen location.

• Compact car rentals    
• Convertible car rentals    
• Economy car rentals    
• Fullsize car rentals    
• Luxury car rentals
• Midsize car rentals    
• Mini car rentals    
• Minivan rentals    
• Pickup car rentals    
• Premium car rentals
• Sportscar rentals    
• Standard car rentals    
• SUV rentals    
• Van rentals