$46 Car Rental Mountainside, NJ

These Mountainside insights are based on real traveler data from Expedia, aggregated using AI to help you plan your trip. Updated: August 28, 2026.

Reasons to book a car rental in and around Mountainside

Renting a car in Mountainside, New Jersey, offers the freedom and flexibility to explore local attractions at your own pace. Whether you are traveling with family, looking for outdoor adventures, or planning a romantic getaway, a rental car makes it convenient to manage your luggage and travel plans. You can easily visit key sites such as the Statue of Liberty, located 16 miles away, or enjoy a cultural experience at the New Jersey Performing Arts Center, just 11 miles from Mountainside. Liberty State Park, located 17 miles away, is also worth a trip for families and outdoor enthusiasts.

Additionally, exploring nearby cities like Westfield, only 1 mile away, or Garwood and Scotch Plains, both 2 miles from Mountainside, is effortless with a rental vehicle. Each of these locations features attractions such as the Paper Mill Playhouse and a variety of parks, allowing you to maximize your sightseeing opportunities. With a rental car, you can travel comfortably and avoid the limitations of public transportation, ensuring you can enjoy everything the area has to offer.

Where to stay around Mountainside

• Scotch Plains: Located 2 miles from Mountainside, Scotch Plains offers a family-friendly atmosphere with vibrant city experiences. Visitors can explore shopping areas, urban parks, and local attractions such as the renowned New Jersey Performing Arts Center and the Paper Mill Playhouse. For those interested in dining, there are various restaurants and wineries nearby, making it a great spot to stay while enjoying cultural activities.
• Fanwood: Situated 3 miles away from Mountainside, Fanwood is perfect for families and outdoor enthusiasts seeking adventure. The city features recreational areas and shopping centers, along with close proximity to national state parks and nature reserves. Highlights include the Plainfield Country Club for golf lovers and opportunities to enjoy local wineries and restaurants. Fanwood is an excellent choice for those who appreciate nature and community spirit.
• Plainfield: Just 4 miles from Mountainside, Plainfield caters to families and business travelers alike. Visitors can enjoy a variety of shopping options, as well as local landmarks such as the Plainfield Country Club and the New Jersey Performing Arts Center. The city also boasts a lively dining scene with numerous restaurants and wineries, making it a well-rounded choice for a stay that blends leisure and business.

10 tips to save on your car rental in and around Mountainside

1. Use filters to find the right car: Refine your search by selecting vehicle types and specific features. Whether you’re in need of an SUV for additional space, a convertible for summer drives, or an economy car for budget-friendly travel, filters on Expedia can assist you in finding the perfect option for your needs.
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 in advance, you’re more likely to secure lower rates and enjoy better selection, particularly during peak seasons.
3. Consider a smaller car for savings: Compact cars are typically more affordable to rent and easier to maneuver in crowded areas. Mid-size rentals strike a good balance between cost, comfort, and fuel efficiency.
4. Age guidelines: Drivers under 30 may encounter higher deposits or daily fees, and certain types of vehicles—such as SUVs or luxury models—might not be available. This age-related policy can also affect renters over 70. Always verify the age requirements prior to booking.
5. Check fuel policies: Some rental agreements operate under a full-to-full fuel policy, which means you must return the vehicle with a full tank to avoid additional fees. This is often the best choice. Other options may include full-to-empty or prepaid fueling, which are also acceptable. Just remember to return the car empty in that case.
6. Save on city and airport pickups: Renting a car from the airport often incurs a surcharge, but the convenience may justify the extra cost.
7. Know your payment options: Most car rental companies accept only credit cards for payment.
8. Understand your insurance coverage: Car rental insurance can help you avoid unexpected expenses and provide peace of mind in case of unforeseen incidents during your trip. It’s simple to add car rental insurance when you book through Expedia.
9. Consider unlimited mileage: If you’re planning 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 vehicle.

Finding the cheapest car rentals in Mountainside

Using our Search Wizard

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

Renting a car in Mountainside

Pay at pickup is available, so you don’t have to worry about spending your money until you arrive at your vehicle in Mountainside. 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 Mountainside

Prices are subject to seasonal change depending on when you decide to arrange your car rental but right now you can book from $46.

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.

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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