10 Best Car Top Carriers 2026 in the United States

The Thule Motion 3 XXL is a spacious rooftop cargo carrier offering 21 cubic feet of storage, making it a great option for families or travelers needing extra gear space. Its wing-shaped design with a forward-leaning nose helps reduce wind resistance, which can improve your vehicle's fuel efficiency compared to boxier carriers. Made from durable aluminum, it promises good longevity and water resistance, protecting your belongings from the elements.

The PowerClick quick-mount system simplifies installation by providing a clear click sound when securely attached, which is convenient for fast and safe mounting without guesswork. Security is also well-covered by the SlideLock system, which separately locks and unlocks the lid and visually confirms when the cargo box is securely closed. The sturdy lid and wide handle allow for smooth one-handed opening and closing, adding to user comfort. The carrier is universally compatible with most roof racks, making it flexible for different vehicles.

Additional accessories like an interior light and protective liners can be purchased separately, which might be useful but add to the overall cost. Although it is positioned at a higher price point typical for Thule products, those prioritizing aerodynamic design, easy mounting, and solid security features will find the Thule Motion 3 XXL to be a strong contender.

The Thule Force 3 XXL is a spacious and durable car-top carrier with a 21 cubic feet capacity, making it a great choice for families or anyone needing extra storage for trips. Its large dimensions (about 91 x 35 x 18 inches) provide plenty of room for gear, but at nearly 53 pounds, it’s fairly heavy, so handling it might require some effort. Made from sturdy plastic, the box is weather-resistant, helping to keep your belongings dry during rain or snow.

One strong point is its aerodynamic design, which helps reduce wind noise and drag compared to bulkier cargo boxes. Installation is user-friendly thanks to a tool-free mounting system that clearly indicates when the box is securely locked onto your roof, which is a big convenience for those who frequently load and unload. You can access your cargo from either side, which is handy in tight parking spots or when loading on the curb side.

Security is solid with the SlideLock system that locks automatically and shows if the lid is securely closed, but like most roof boxes, it’s best to use it in combination with other vehicle security measures. This box fits a wide range of vehicles including SUVs, trucks, cars, and EVs, making it versatile. Its large size and weight could be less ideal for those who want something lighter or more compact. It is well suited for active drivers who need durable, ample storage space with ease of use and strong security features.

The Thule Motion 3 XL is a spacious and stylish rooftop cargo box that offers 18 cubic feet of storage, making it ideal for families or travelers needing extra room for luggage or gear. Its length of 88 inches and streamlined, wing-shaped design help reduce wind drag, which can improve fuel efficiency during long drives. Made with durable aluminum, it combines strength with a surprisingly light weight of just 8 pounds, which helps when mounting and removing the box.

The PowerClick quick-mount system is a standout feature, allowing for easy and secure installation with a clear click to confirm proper fitting — perfect if you want a hassle-free setup. For added security, the SlideLock system ensures the lid locks securely and shows when it’s properly closed, giving peace of mind on the road. The wide handle and sturdy lid make opening and closing smooth, even with one hand. While it doesn’t claim to be fully water-resistant, its hard shell construction will protect belongings from typical weather conditions.

The box also supports useful accessories like interior lighting and protective liners, enhancing convenience. One minor consideration is the relatively narrow width of 18 inches, which might limit bulky items, but its capacity remains generous. This carrier suits those who prioritize easy installation, secure closure, and aerodynamic efficiency for frequent or long-distance travel.