A roof cargo box turns wasted overhead space into serious storage, freeing up your SUV cabin for passengers instead of luggage. The six models below cover a range of capacities and mounting styles so you can match a box to your crossbars and your road trip plans.
| Photo | Product | Score | Buy |
|---|---|---|---|
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Thule Motion XT XL Best Overall 18 cubic feet capacity |
9.6 | 🛒 Check Price |
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Yakima SkyBox 18 Most Durable 18 cubic feet capacity |
9.4 | 🛒 Check Price |
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SportRack Vista XL Best Value 18 cubic feet capacity |
9.1 | 🛒 Check Price |
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INNO Wedge Plus Best Aerodynamic 13 cubic feet capacity |
9.0 | 🛒 Check Price |
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JEGS Rooftop Carrier Best Budget 14 cubic feet capacity |
8.8 | 🛒 Check Price |
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Goplus XL Cargo Box Best Large Capacity 16 cubic feet capacity |
8.7 | 🛒 Check Price |
1. Thule Motion XT XL: Best Overall
The Thule Motion XT XL pairs a sleek aerodynamic profile with a roomy 18 cubic foot interior, making it a strong fit for larger SUVs hauling skis, luggage, and camping gear. Dual-side opening means you can reach your gear from the curb side no matter where you park.
Mounting relies on PowerClick torque knobs that click when the box is secured, so you never overtighten or second guess the grip. The central locking system keeps every latch closed and the lid sealed against rain and road spray.
- Aerodynamic shell cuts wind noise and drag on the highway
- Dual-side opening lets you load from either side of the SUV
- PowerClick quick-mount knobs grip most factory and aftermarket crossbars
Pros: Premium build with a smooth low-profile shape; Tool-free mounting that locks tight in seconds
Cons: Sits at the higher end for cost
2. Yakima SkyBox 18: Most Durable
The Yakima SkyBox 18 is built around a hard textured shell that shrugs off branches, hail, and sun exposure, which suits owners who leave the box mounted through every season. Its 18 cubic foot volume swallows duffel bags, sleeping bags, and gear for a full family weekend.
Yakima’s SuperLatch system gives a clear indication that the lid is both locked and properly attached to the crossbars before you drive off. The wide clamshell opening makes loading bulky and lengthy items far less of a wrestling match.
- Rugged textured shell resists scratches and UV fading
- SuperLatch security system confirms a locked, mounted box
- Wide opening fits long items like skis and fishing rods
Pros: Tough, weather sealed construction built for years of use; Generous length suits tall and long cargo
Cons: Single-side opening only
3. SportRack Vista XL: Best Value
The SportRack Vista XL delivers a full 18 cubic feet of storage at a friendly cost, making it the smart pick for road trippers who want capacity without spending big. The rear-loading design keeps your gear over the back of the roof and clear of the driver’s sightline.
It clamps onto round, square, and most factory crossbars with simple knob hardware, so first-time owners can have it mounted quickly. The lid locks shut to keep your gear secure at rest stops and overnight stays.
- Large 18 cubic foot shell for the cost-conscious buyer
- Rear opening keeps the load away from the windshield
- Quick-mount hardware fits round, square, and most factory bars
Pros: Big capacity without a premium outlay; Simple, fast crossbar installation
Cons: Rear-only opening can be awkward on tall SUVs
4. INNO Wedge Plus: Best Aerodynamic
The INNO Wedge Plus leans on a low, tapered wedge shape that slices through the air with minimal drag and noise, ideal for drivers who log long highway miles. Its 13 cubic foot capacity handles soft luggage and gear while keeping the overall roof height down.
The forward-sloping tail is designed to clear rear liftgates on many SUVs, so you can still pop the hatch with the box mounted. Dual-side opening lets you load and unload from whichever side is most convenient.
- Low wedge profile trims drag and wind whistle
- Tapered shape clears most rear hatch openings
- Both-side opening for flexible loading
Pros: Sleek shape helps protect fuel economy; Hatch clearance friendly on many SUVs
Cons: Smaller volume than the largest boxes
5. JEGS Rooftop Carrier: Best Budget
The JEGS Rooftop Carrier is a no-frills hard box aimed at drivers who need extra space a few times a year without a large outlay. Around 14 cubic feet of room is plenty for a couple of suitcases and soft bags on a family getaway.
U-bolt clamps anchor the box to standard crossbars, and the included lock keeps the lid shut between stops. It will not match the polish of a premium shell, but it covers the basics for casual haulers.
- Straightforward hard shell at an entry-level cost
- U-bolt clamps secure to standard crossbars
- Lockable lid for basic gear security
Pros: Easy on the wallet for occasional trips; Simple mounting hardware included
Cons: Less refined fit and finish than premium boxes
6. Goplus XL Cargo Box: Best Large Capacity
The Goplus XL Cargo Box offers a generous 16 cubic feet of storage for owners who routinely overpack, with enough room for camping kit, luggage, and sports gear. Dual-side opening means you can load from the curb side no matter how you park.
Universal clamps grip a broad spread of round and square crossbars, so it adapts to many SUV setups. The shell is on the heavy side, so plan on a second pair of hands when lifting it onto the roof.
- Roomy 16 cubic foot shell for bulky loads
- Dual-side opening for easy access on either side
- Universal clamps fit a wide range of crossbars
Pros: Large interior for the cost; Flexible both-side loading
Cons: Heavier shell takes two people to mount
Frequently Asked Questions
Will a roof cargo box fit my SUV?
Most hard roof cargo boxes mount to crossbars rather than directly to the roof, so the key is having a set of compatible round, square, aero, or factory crossbars rated for the load. Check your crossbar spread and your roof weight limit before buying.
How much capacity do I need?
For weekend trips with a couple of people, a 13 to 14 cubic foot box is usually enough. Families or longer expeditions with bulky gear are better served by 16 to 18 cubic foot boxes like the larger models on this list.
Does a roof box affect fuel economy?
Any roof box adds aerodynamic drag and will reduce efficiency to some degree, especially at highway speeds. Low-profile aerodynamic shapes minimize the hit, and removing the box when it is not in use restores normal mileage.
Our Verdict
For most SUV owners the Thule Motion XT XL is the standout, blending huge capacity, quiet aerodynamics, and tool-free mounting, while the SportRack Vista XL and JEGS Rooftop Carrier prove you can add serious space on a tighter budget. Match the capacity and opening style to your crossbars and trips, and you will pack smarter on every drive. For more options see our guide to the best roof cargo boxes and pair your pick with one of the best roof racks for SUVs.
