Whenever we go on trips or a holiday adventure, we always want to take more stuff. Moreover, we also need to fit five people in our vehicle. Despite our trying hard, we can’t take all the things that we need. Using a cargo box, we can keep all of our stuff in the car.
If you are in a hurry, then you can use the links below to buy the Biggest Roof Box for your car. You don’t need to worry about the quality of the products because we only recommend the best.
– Best Overall – Thule Motion XT Rooftop Cargo Box
– Best Wide Range Options – Modula Racks Travel Twin 650 Litre
– Best Carrier for Pickup Trucks – MARKSIGN Truck Cargo Bag
All your stuff and your luggage can fit in a roof box. You can accommodate a roof box nicely on the roof of your car. By setting up a roof box, you can get more space to keep your stuff. Also, if you set up a roof box, you don’t need to keep anything in the passenger seat during the journey. So you will be able to drive without any anxiety.
We are going to review the top 5 biggest rooftop boxes available in this article to help you to choose the perfect roof box for you. So, you can take anything you need on your next adventurous trip.
The 5 Biggest Roof Box Available:
1. Thule Motion XT XXL Cargo Box:
This stylish roof box is very easily usable and looks so aesthetic. It is available in 2 colors and a massive volume of 610L or 22 cubic feet. The dual-sided opening of this Thule Motion XT can give you access more easily.
Despite being huge, it is very user-friendly and straightforward to open or close for its grip-friendly lid-lifter in unfavorable weather conditions. The weight limit for this roof box is 75kg.
Because of its immense size, you might be worried about access to your car’s trunk. But you don’t have to worry because it sits slightly ahead on the roof of your vehicle, so you can get the full trunk access without hitting your roof box.
Some important features of Thule Motion XT XXL:
- Easy to open/close in all weather conditions.
- Grip-friendly outer handles and supporting lid-lifters.
- The load capacity of 75 kg.
- Oversized roof-mounted cargo box provides 22 cubic feet of additional packing space.Height off crossbar : 17 in
- Designed for optimal space efficiency, aerodynamics, and vehicle fit
- Quick-mount system "clicks" when roof box is secure and properly mounted
- Dual-side opening for quick access from either side of the car
- Easy to open and close with grip-friendly handles and supporting lid-lifters
- Full trunk access and no roof box contact
- Lid automatically locks in place and indicates a secure closure (One Key System compatible)
- Fits 5-7 pairs of skis / 3-5 snowboards
- External dimensions: 91.5 x 37.5 x 18 inches; Internal dimensions: 84.5 x 33 x 16 inches
- Load capacity: 165 lbs; Product Weight: 55 lbs
2. Thule Force Cargo Box:
This sleek roof box is another product from Thule. Despite looking great, the performance is good also. But we kept this at number 2 because of its mounting system.
To install it on the roof of your vehicle, you need to open the mounting tools first. Then you have to set the box in the center of the roof bars. The installation process is a little trickier, and you have to work correctly. Still, the installation process only took less than 5 minutes.
The Thule Force Cargo Box is available with a pre-installed quick-grip mounting system. So the installation process for this roof box is tool-free. The lid is very durable and functional with a diamond-textured finish. Its aerodynamic shape is conducive to reducing drag and resist air.
The Thule Force Cargo Box is available with a big SecureLock, which ensures the security of the box. Moreover, it is also available with a dual-sided opening. So you can get access to this roof box quickly.
Some important features of the Thule Force Cargo Box:
- Secure clicking mounting systems
- Exclusive diamond-textured AeroSkin surface
- Load capacity remaining about 110 lbs.
- Diamond-Textured AeroSkin Lid is durable and the aerodynamic shape helps cut through the air
- Tool-Free Quick-Grip Mounting system attaches box to rack in less than 5 minutes
- Oversized SecureLock ensures the box is closed securely
- Dual-Side Opening for loading/unloading from either side of the vehicle
- Height off crossbar: 15.4 inches
3. Yakima Skybox Carbonite Cargo Box:
This magnificent large 21 cubic feet roof box weighs 75 lbs. It can carry only 28 kg because of its size. At the 21 cubic feet volume range, the other Thule roof boxes can carry more weight.
The Yakima Skybox can also give you access from the dual side, and it is available with a super latch, which makes the opening and closing easier. The tapered exterior of this roof box is stunning. And it can reduce drag. You can install it without any tools.
To install it, You have to follow the following steps only:
- Open the lid
- Release the clamps
- Loosen the thumbwheels
- Position the roof box on your roof rack crossbars
- Slide it back so that the clamps engage the load bars
- Tighten the thumbwheels
- Then engage your lever clamps.
That’s it! After completing these steps now, your Yakima Skybox Carbonite is correctly installed on the roof of your vehicle, and it will not slide down from your roof bars. If it does slip, open the lid of your roof box and tighten the levers to secure it.
The price of this roof box is as like the Thule. Now you can ask us why you should buy the Skybox? Then the answer is – It is available with lid stiffeners, which makes it much more durable than the Thule. Moreover, the installation process for this roof box is more comfortable than the Thule also. It only takes minutes.
Some important features of Yakima Skybox:
- Tool-free installation
- 21 cubic feet
- Load capacity 28 kg
- More Room for Cargo Space: Provides generous 16 cubic feet of secure storage for all your family's gear, perfect for road trips, camping, and outdoor excursions.
- Dual-Sided Access for Convenience: Unique dual-sided opening design allows easy loading and unloading from either side of your vehicle.
- Enhanced Security: Integrated push-button security and SKS locks keep your belongings safe and secure on the road.
- Durable Build: Lid designed with internal stiffeners for durability and easy open and close, and a sleek Carbonite texture for aerodynamics.
- Take It Easy: Since 1979, Yakima has worked to simplify the way people travel and transport recreational sporting equipment. We put safety, sensibility, and street smarts into every product design.
4. Modula Racks Travel Twin 650 Litres:
This roof box is available with an internal capacity of nearly 23 cubic feet or 650 liters. It comes with a 5 Year Warranty, so it is a little more costly than the previous roof boxes we reviewed here.
The Modula Racks Travel Twin 650 Litres can be fitted with most aftermarket roof-racks, including Rhino-Rack, Modula, Thule, Sport-Rack, and Yakima. This big roof box is available with excellent features.
This Modula Racks Travel Twin 650 Litres is also able to give access from the dual side. The lid of this roof box has a lock and allows you to load stuff in it from each side of your vehicle. With the Modular Rack, you can install or remove it from the roof of your car very quickly and without anyone’s help.
With the help of the premium hinge hardware, the opening and closing of this roof box are very smooth. The lid of this roof box is made of acrylic, and it is very durable.
Some important features of Modula Racks Travel Twin 650 Litres:
- 3 Point Central Locking System
- The load capacity of 650 litres
- 5 Year Warranty
- 5 Year Warranty
- Patented Quick Release Tool-Free Leg
- Dual Side Opening
- 3 Point Central Locking System
- Fits most factory and aftermarket roof-rack cross-bars. Including: Modula, Rhino-Rack, Yakima, Thule, Sport-Rack
5. Marksign Truck Bag:
From the name, you can say that this is not a roof box. This Marksign truck bag & net is available with a capacity of 26 cubic feet so it can be a better option for you. It can carry all of your needy stuff. If you have a truck, then it can be a better option for you because it fits with the trunk bed very nicely.
The Marksign truck bag is very user-friendly, and this trunk bag has four heavy-duty rubber handles. After comparing this roof net with others, we found that it is easier to handle. Moreover, it is waterproof, and it comes with four robust 4 feet x 6 feet bungee nets to secure the bag onto your truck.
You can stretch this net out to 8 feet x 12 feet. It also comes with 12 strong metal carabiners to ensure secure tie-down. This trunk bag is electrically welded from 500D tarpaulin to prevent any water leakage, and the zipper is vinyl coated. The seals use Velcro to close, so you don’t have to worry about water leakage during wet weather conditions.
The material used in making this trunk bag is UV resistant, so it is very durable. To keep it when you don’t have to use it, the trunk bag comes with an extra drawstring bag. Marksign Trunk bag is the best large trunk bag for a truck, and it is beautiful also. The price of this trunk bag is value for money. Everything is good, but one thing – you have to be aware the product is still patent pending.
Some important features of Marksign truck bag:
- Fits any truck size
- Waterproof design (500D tarpaulin material)
- Comes with strong cargo net
- SPACIOUS STORAGE ROOM: Measures 51x40x22 inches (130x100x55cm) and 26 cubic feet, the cargo bag can hold everything of a family of 5-6 people. Fits any truck beds.
- 4 HANDLES FOR EASY TRANSPORTING: 4 heavy duty handles make loading and unloading much easier than competing designs.
- HEAVY DUTY CARGO NET INCLUDED: Each bag comes with a heavy duty 4'x 6' bungee net stretches to 8'x12' to keep the cargo bag firmly in place, preventing it from blowing up when you are driving. 12 strong metal carbiners are also included for easy and secure tie-down.
- 100% WATERPROOF DESIGN: The whole cargo bag is electrically welded from 500D tarpaulin without any needle holes. Vinyl coated #10 zipper and Velcro closed rain flap firmly seal rain out. The fabric is also UV resistant to last for years to come.
- STORAGE BAG INCLUDED: Extra drawstring bags for the cargo bag and cargo net are also included for easy storage.
Conclusion:
The given roof boxes are the best to provide you with enough space for all of your needs. You have to think about the weather conditions in which you will use it and how easily you can install and uninstall it. Also, you have to think about the weight limit you are going to carry with it.
Always check the weight limit of your roof rack and your car roof. Because if you overload it, then the effect can be harmful to your car; it can damage your vehicle.
–our editorial board has reviewed this article and has been approved for publication according to our editorial policy.
Best Seller List of Roof Cargo Boxes:
- 18 cubic foot (510 L) internal cargo capacity
- Made from durable UV-resistant ABS material
- Rear opening for easy access away from traffic
- Tool-free mounting hardware for easy installation and removal
- Includes key and lock to secure contents in the box, and the box to your rack
- Fits SportRack Rack Systems, square bars, round bars and most factory racks (check fit guide)
- Dimensions (LxWxH): 63 x 38 x 19 in / 160 x 96.5 x 48 cm
- Min-Max Crossbars Spacing: 23 5/8 - 29 3/4 in (60 - 75.5 cm)
- Max Weight Capacity: 100 pounds (45 kg)
- Secure & protect your gear in this 18 cubic ft. HDPE plastic hard shell vehicle cargo carrier; high-capacity interior dimensions 57 L x 38 1/2 W x 17 3/4 H inches; aerodynamic design for fuel efficiency
- Weatherproof storage for your luggage with a four corner locking system, front latch, and weather-tight seal for ultimate car rooftop protection and security
- Easy & convenient loading and unloading from either side of the car make for smooth travel and hassle-free storage
- No tools required, easy assembly and installation on Vehicles with Roof Luggage Rails and Crossbars.All mounting hardware and simple instructions are included to get you safely on the road quickly. The base is pre-drilled for 24in crossbar spacing - if your vehicles crossbars are NOT adjustable the plastic base can be re-drilled to match your vehicle (20in to 30in bar spacing)
- Made in USA, limited lifetime guarantee. The JEGS car top carrier’s high-quality construction and performance give you peace of mind
- Comfortably Holds 3 golf bags, up to 5 if stacked depending on size.
- Designed to fit ONLY on cross-rail systems rated at 150 lbs. and greater. (See Vehicles Owners Manual for Weight Carrying Capacity)
- This cargo carrier must be mounted onto a roof rack with horizontal crossbars
- Be sure to allow for clearance of rear hatchback, roof-mounted antennas, and navigation fins
- Load cargo carrier paying careful attention to distribute the weight evenly and not exceed the maximum allowed weight of the box or cross rails
- 【Durable & Weatherproof Hard-Shell Design】 Crafted from high-quality ABS material, this rooftop cargo box resists impacts, UV rays, and extreme temperatures. The 100% waterproof seal keeps luggage dry in rain or snow, while the aerodynamic shape reduces wind noise and improves fuel efficiency on long trips.
- 【Massive 17 Cu-Ft (480L) Storage Capacity】 With dimensions of 61.42"L x 30.71"W x 14.96", this carrier provides extra space for bulky gear like suitcases, camping equipment, or ski gear. Holds up to 165 lbs—ideal for family road trips or outdoor adventures without sacrificing cabin comfort.
- 【Universal Fit for Most Vehicles】 Compatible with cars, SUVs, and vans equipped with roof racks (crossbars required). Tip: Check your roof rack’s weight limit and spacing before installation for a secure fit.
- 【Dual-Side Opening for Easy Access】 The convenient two-way opening lets you load/unload from either side of your vehicle—perfect for tight parking spots. Includes 2 security keys and 2 reinforced straps to lock contents and prevent shifting during transit.
- 【Easy Installation & Hassle-Free Use】 Designed for quick and tool-free setup, this cargo box securely attaches to most roof racks in minutes. The lightweight yet sturdy construction makes it easy to load and unload, while the low-profile design ensures minimal impact on your vehicle’s height clearance.
- 【DURABLE CONSTRUCTION】Crafted from high-quality ABS material, the hard shell rooftop cargo box ensures long-lasting durability. Its waterproof and UV-resistant design protects luggage from various weather conditions, making it ideal for road trips. The aerodynamic shape also reduces fuel consumption and noise for a smoother ride
- 【SPACIOUS 12/14 CUBIC FEET STORAGE】With dimensions of 54.3"L x 31.5"W x 13.4"H/62.2"L x 31.5"W x 13.4"H, the rooftop cargo box offers 12 cubic feet (340L) of extra storage space. With a maximum capacity of 165 lbs, it significantly increases storage capacity for your belongings
- 【UNIVERSAL FIT】Compatible with all vehicles equipped with a roof rack, including cars, vans, and SUVs. Prior to purchase, please verify compatibility by checking the roof rack fitting guidelines
- 【CONVENIENT DUAL-SIDED OPENING】The dual-sided opening system allows easy access from both sides of the cargo box. Includes 2 keys and 2 straps for added security. Ensure one side is locked when opening the other side
- 【RELIABLE WARRANTY】 is committed to delivering high-quality products and meeting customer expectations. Enjoy a one-year warranty for added peace of mind. For any inquiries, our team is available to assist you within 24 hours
- Universal Fit - This roof top storage box is universal fit for mounting to max 13 inches wide cross bar, please check the dimension before purchase.
- Spacious Capacity - Expand your vehicle's cargo capability significantly with 11 cubic feet of spacious storage and a robust 110 lb weight limit. Designed with a 14-inch wide opening for easy loading of large gear, this box provides ample room for luggage and essentials while keeping your passenger area comfortable and uncluttered. It's perfect for families, road trippers, or outdoor adventurers.
- Secure Lock, Stable Travel - The key lock system keeps your valuables safe. You can only remove the key after all lock points are fully secured. The belongings and luckages stay firmly in place inside during your drive, even on bumpy roads – no shifting or falling out. Open it from the passenger side for easy loading and unloading.
- Impact-Resistant Protection - Built with UV-protected, weather-resistant ABS, the cargo box shields contents from rain, sun, snow, and impacts while maintaining structural integrity in all conditions for reliable long-term performance.
- Overall Dimensions - 53" L x 34" W x 15" H | Capacity: 11 Cubic Feet and up to 110 LBS. Package includes [1] 53 inches length storage box, [2] security lock key, and [4] heavy duty tool free installation mounting brackets.
- Spacious 14 Cu Ft Storage: This rooftop cargo carrier delivers a generous 390L (14 cubic feet) of space, making it the ideal car top carrier for family vacations, road trips, and sports adventures. Easily store camping gear, luggage, or ski equipment and free up valuable cabin room.
- Rugged Hard Shell Protection: Made from tough, UV-resistant ABS, this rooftop cargo carrier hard shell guards your belongings against rain, sun, dust, and road debris—providing reliable protection in any weather conditions.
- Secure & Lockable Design: The roof cargo box is equipped with built-in straps and a dependable locking mechanism, plus included keys. Keep your items stable and safely locked inside the cargo box on every journey.
- High Capacity & Hassle-Free Mounting: With a robust 165 lbs weight limit, this cargo box installs quickly and securely onto most vehicle roof racks or crossbars—no tools required. Always check your roof rack compatibility before purchase.
- Aerodynamic & Universal Fit: The streamlined, low-profile roof cargo box design reduces wind noise and drag, while fitting most cars, SUVs, and vans. Enjoy extra rooftop storage without compromising your driving comfort or vehicle performance.
- Durable and Weather-Resistant: Made from high-quality UV-protected ABS material, this hard-shell rooftop cargo box helps protect your belongings from rain, sun, and snow. Its sturdy design keeps luggage safe during travel while offering long-lasting performance.
- Spacious 14 Cubic Feet Storage: With 14 cu ft (390L) of internal space and a maximum capacity of 165 lbs, this cargo box provides extra room for luggage, gear, or sports equipment like skis. The wide opening makes loading and unloading easier.
- Easy Installation and Universal Fit: Tool-free mounting hardware allows quick setup on most roof racks up to 33 inches wide. Compatible with cars, SUVs, and vans—just verify roof rack dimensions before installation.
- Dual-Sided Access and Secure Lock: The dual-sided opening design provides convenient access from either side of the vehicle. Includes secure keys and straps to help keep your cargo stable while driving.
- Aerodynamic and Travel-Friendly: Designed with an aerodynamic shape to reduce wind resistance and minimize noise. This rooftop cargo carrier helps expand your vehicle’s storage without affecting driving comfort.
- Universal Fit - This roof top storage box is universal fit for mounting to max 13 inches wide cross bar, please check the dimension before purchase.
- Spacious Capacity - Expand your vehicle's cargo capability significantly with 12.7 cubic feet of spacious storage and a robust 110 lb weight limit. Designed with a 13.5-inch wide opening for easy loading of large gear, this box provides ample room for luggage and essentials while keeping your passenger area comfortable and uncluttered. It's perfect for families, road trippers, or outdoor adventurers.
- Secure Lock, Stable Travel - The key lock system keeps your valuables safe. You can only remove the key after all lock points are fully secured. The belongings and luckages stay firmly in place inside during your drive, even on bumpy roads – no shifting or falling out. Open it from the passenger side for easy loading and unloading.
- Impact-Resistant Protection - Built with UV-protected, weather-resistant ABS, the cargo box shields contents from rain, sun, snow, and impacts while maintaining structural integrity in all conditions for reliable long-term performance.
- Overall Dimensions - 55" L x 34.5" W x 14" H | Capacity: 12.7 Cubic Feet and up to 110 LBS. Package includes [1] 55 inches length storage box, [2] security lock key, and [4] heavy duty tool free installation mounting brackets.
- Spacious 16 Cu Ft Storage: This hard shell roof cargo carrier offers a generous 16 cubic feet of space, ideal for road trips, vacations, or outdoor gear. Overall dimensions: 58.3"(L) x 35.4"(W) x 13"(H)
- Heavy-Duty ABS + PMMA Build: Made from durable ABS and PMMA materials, this car roof box is UV-resistant, impact-resistant, and weatherproof to protect valuables in harsh outdoor conditions
- Dual-Side Opening & Secure Lock: Features dual-side opening for convenient loading/unloading. Lock system ensures the key can only be removed when securely closed for maximum safety
- Tool-Free Installation: Quick and easy mounting with no tools required. Compatible with most round, square, and aerodynamic crossbars for universal fit on cars and SUVs
- Passenger-Side Accessibility: Designed for safety and convenience, the box opens up to 14.5" wide from the passenger side with strong support arms to hold the lid open during use
- Durable ABS and PMMA Material:Constructed with high-quality ABS and PMMA materials for impact resistance and weather protection, this roof cargo carrier ensures durability and shields your belongings from harsh outdoor elements.
- Spacious 13 Cubic Feet Capacity:Offers 13 cubic feet of storage space and supports up to 130 lbs of weight, making it perfect for long road trips, camping, and transporting bulky items like luggage or sports equipment.
- Double-Sided Opening for Easy Access:The dual-sided opening design allows for convenient loading and unloading from either side of the vehicle. The strong support arm keeps the lid open securely while you access your items.
- Secure Locking Mechanism:Equipped with a reliable locking system, the key can only be removed when all locking points are securely closed, ensuring the safety of your stored items during travel.
- Tool-Free Installation & Universal Fit:Easily installs without tools and is compatible with most roof rack types, including round, square, and aerodynamic bars, providing a hassle-free setup for a variety of vehicles.
- ▶Overall Dimensions: 55.91" L x 29.53" W x 14.96" H ▶Capacity: 13 Cubic Feet volume and holds up to 130 lbs
Last Update : 2026-02-10
