10 Best Roof Cargo Boxes 2025 in the United States

The Thule Force 3 is a robust choice for those in need of a large capacity roof cargo box. With its generous 21 cubic feet of storage, it is ideal for families or individuals requiring substantial space for road trips or outdoor activities. The box is designed to be aerodynamic, which should help minimize wind resistance and noise when driving. Made from durable plastic, the box is built to withstand daily wear and tear, making it suitable for active lifestyles and different weather conditions.

One of its standout features is the dual-sided opening, allowing for easy access from either side of the vehicle, a convenient option when packing or unpacking your cargo. The quick and intuitive mounting system ensures the box is securely attached and provides a clear indication when correctly mounted, making installation straightforward even for those not mechanically inclined.

Security is well-handled with the SlideLock system, which separates the locking and opening functions, ensuring that the lid is securely closed and locked, providing peace of mind during travel. Additionally, the unit's weatherproof design protects contents from the elements. However, at 53.5 pounds, it is on the heavier side, which might require some assistance during installation. Given its features, it’s best suited for SUVs, trucks, and larger vehicles, though its size might be overkill for smaller cars with less roof space.

In conclusion, the Thule Force 3 seems well-designed for those who need a reliable and spacious roof cargo solution, but potential buyers should consider their vehicle's compatibility with its size and weight.

The SportRack Vista XL Rear Opening Cargo Box offers an impressive 18 cubic feet of internal cargo capacity, making it a great choice for family trips or transporting large items. The box is constructed from durable UV-resistant ABS material, ensuring it can withstand harsh weather conditions and long-term use. Weighing just 28 pounds, it's relatively lightweight for its size, which aids in easier installation and handling.

The rear opening design provides convenient access to your belongings while keeping you safe from traffic. The tool-free mounting hardware simplifies installation and removal, fitting well with SportRack systems, square bars, round bars, and most factory racks, though it's always wise to check the fit guide for compatibility. For security, the box includes a key and lock to secure both your contents and the cargo box itself.

One downside is the maximum weight capacity of 100 pounds, which may be limiting for some users. Additionally, aerodynamics could be affected depending on your vehicle's design, potentially impacting fuel efficiency. Despite these minor drawbacks, the SportRack Vista XL is a reliable and practical cargo box with a user-friendly design, suitable for those needing extra storage space on their travels.

The Thule Force 3 - Size L Sport roof cargo box offers a solid 11 cubic feet of storage, making it a good choice for those needing extra space for gear on SUVs, trucks, cars, or EVs. At about 31 pounds, it's relatively light for its size, which helps with installation and handling. Made of durable plastic with a sleek black finish, it is designed to withstand daily use and harsh weather, being fully waterproof. Its aerodynamic shape helps reduce drag and wind noise while driving. The mounting system is user-friendly, featuring a quick-click mechanism that confirms when the box is securely attached, making setup straightforward even for first-timers. Additionally, the dual-sided opening is convenient for accessing your belongings from either side of your vehicle without hassle.

Security is well covered by the SlideLock system, which automatically locks the lid and signals when it’s properly closed, enhancing peace of mind. A minor downside might be its width, which is relatively narrow compared to some other models, possibly limiting larger items, but this also contributes to better fit on various roof sizes. Emphasizing safety and durability, backed by extensive testing, this cargo box suits active users looking for reliable weather protection and easy operation, though those needing maximum capacity might look for larger options.