10 Best Car Top Cargo Carriers 2026 in the United States

The Thule Force 3 L US is a hard-shell rooftop cargo carrier made from durable plastic, offering a spacious 16 cubic feet of storage. Its dimensions (80"L x 18"W x 38"H) provide ample room for luggage or gear, making it suitable for active individuals or families needing extra cargo space for trips. The carrier uses a user-friendly mounting system that clicks securely into place, giving you peace of mind that it’s safely attached.

You can access your belongings from both sides of the vehicle, which adds convenience when loading or unloading. The SlideLock system automatically locks the lid and clearly shows when it’s securely closed, enhancing security and keeping your items safe. Designed to be water-resistant, it protects your cargo from rain and road spray. Tested thoroughly for durability and safety, it stands up well to daily use and road conditions. Being a universal fit, it can mount on most roof racks, though it’s important to check compatibility with your specific car and rack system.

The carrier is relatively lightweight for its size, but the large dimensions may affect vehicle aerodynamics somewhat, potentially impacting fuel efficiency. It has excellent security and convenience features, making it a reliable and easy-to-use cargo box that balances capacity, security, and durability, suitable for anyone wanting extra storage on their roof.

The Thule Motion 3 XXL rooftop cargo box is a spacious and well-designed carrier ideal for families or anyone needing extra storage space on top of their vehicle. It offers a generous 21 cubic feet capacity and can hold up to 165 pounds, which suits most gear from luggage to sports equipment. Measuring about 96 by 39 by 20 inches, it’s quite large, so make sure your vehicle can accommodate its size. The box is made from durable aluminum, providing a strong and lightweight shell that helps protect your items. Its aerodynamic, wing-shaped design with a forward-leaning nose reduces wind drag, which can help improve fuel efficiency compared to bulkier carriers.

Mounting is straightforward thanks to the PowerClick quick-mount system, which signals when it’s securely attached, making installation faster and tool-free. Opening and closing the lid is easy with one hand, aided by a sturdy lid and wide handle, which adds convenience when loading or unloading. The SlideLock system enhances security by automatically locking the lid and showing when it’s properly closed, giving peace of mind that your belongings are safe. However, the box isn’t water resistant, so it’s best used in dry conditions or with waterproof bags inside. At 35 kilograms (about 77 pounds), it’s relatively heavy for installation, so some users may need assistance mounting it.

The box comes in a neutral titan color and offers optional accessories like interior lighting and protective liners, which are sold separately. This rooftop box represents a strong choice for anyone wanting a large, secure, and aerodynamic cargo carrier, especially if easy mounting and reliable locking are priorities.

The Thule Motion 3 XXL is designed as a spacious and durable rooftop cargo carrier, offering 21 cubic feet of storage which is great for families or travelers needing extra room. Its aluminum construction makes it sturdy yet relatively lightweight, contributing to long-term durability and rust resistance. The carrier features a wing-shaped design with a forward-leaning nose, which helps reduce wind drag and can improve your vehicle’s fuel efficiency compared to boxier models.

Mounting is user-friendly thanks to Thule’s PowerClick quick-mount system, which uses a torque indicator that clicks when the carrier is securely attached, making installation faster and more reliable. For security and convenience, the SlideLock system separately locks the lid and confirms it is properly closed, helping protect your belongings. The lid opens smoothly with a wide handle designed for one-hand operation, which is helpful when loading and unloading. Accessories like interior lighting and protective liners add to its usability.

While rooftop carriers typically have weight limits that should be checked against your vehicle’s roof rack capacity, this hard-shell aluminum carrier may be heavier and pricier than some plastic alternatives. This carrier is well suited for those who want a secure, spacious, and aerodynamic rooftop box with easy mounting and strong build quality.