When choosing a roof cargo box for an electric vehicle, aerodynamics play a crucial role in maintaining efficiency and minimizing drag. The Yakima SkyBox NX Skinny stands out as the best overall for its sleek, low-profile design that reduces wind resistance while offering ample storage. The Thule Motion 3 is another top contender, providing a larger capacity with advanced aerodynamics that help preserve EV range. However, tradeoffs exist: larger boxes tend to increase drag, and some models may add more weight than the vehicle can comfortably handle. Keep reading for a detailed comparison of these options to find the best fit for your EV and travel needs.
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Key Takeaways
- The lowest-profile cargo boxes like the Yakima SkyBox NX Skinny significantly reduce drag without sacrificing much capacity.
- Larger capacity boxes, such as the Thule Motion 3, tend to increase aerodynamic resistance but offer more storage space for long trips.
- Dual-side opening features are common in premium models, improving convenience but often adding to the weight and complexity.
- Soft cargo bags like the Naturnest provide a flexible, lightweight alternative that can be less aerodynamic but easier to install and store when not in use.
- The best aerodynamic options balance low-profile design with sufficient capacity, with careful attention needed to compatibility with roof racks and vehicle shape.
| Yakima SkyBox NX Skinny Roof Cargo Carrier, 12 Cu Ft, SKS Lock, Black |  | Best Overall for Aerodynamic Efficiency and Versatile Use | Capacity: 12 cubic feet | Fits skis/snowboards: up to 195cm | Locking system: SKS lock | VIEW ON AMAZON | See Our Full Breakdown |
| Thule Arcos Box |  | Best for Premium Aerodynamics and Ease of Loading | Item Dimensions: 67 x 31.5 x 19 inches | Capacity: 14 cubic feet | Material: Plastic | VIEW ON AMAZON | See Our Full Breakdown |
| INNO Wedge Plus BRM865 Matte Black 13 cu ft Roof Rack Cargo Box with Dual-Side Opening |  | Best for Versatile Mounting and Secure Ski/Snowboard Storage | Capacity: 13 cubic feet | Fits: 6-8 pairs of skis or 4-6 snowboards | Material: Hard Shell | VIEW ON AMAZON | See Our Full Breakdown |
| INNO WEDGE660 White 11 cu ft Roof Cargo Box, Low Profile, Dual-Side Opening, Lockable, Compatible with Aero & Square Bars |  | Best for Compact, Low-Profile Aerodynamics and Easy Access | Capacity: 11 cubic feet | Color: White | Material: Hard shell | VIEW ON AMAZON | See Our Full Breakdown |
| Thule Motion 3 Rooftop Box |  | Best for Advanced Aerodynamics and High-End Features | Design: Wing-shaped profile with forward-leaning nose | Mounting System: PowerClick quick-mount | Locking Mechanism: SlideLock | VIEW ON AMAZON | See Our Full Breakdown |
| Thule Pulse 2 M Roof-Mounted Cargo Box, 14 Cubic Ft |  | Best Overall Aerodynamic Hard Shell Roof Cargo Box | Capacity: 14 Cubic Feet | Load Capacity: 75 kg | Material: ASA-ABS plastic | VIEW ON AMAZON | See Our Full Breakdown |
| Naturnest Rooftop Cargo Carrier Bag, Waterproof Soft Rooftop Box, Aerodynamic Low-Profile Design for Better Gas Mileage, Fits All Vehicles with/Without Roof Rack – SUV, Truck, Van, Jeeps |  | Best Soft, Low-Profile Aerodynamic Cargo Solution | Capacity: 12.7 cu ft (360L) | Weight Limit: 77.2 lbs (35kg) | Weight: 9.3 lbs (4.2kg) | VIEW ON AMAZON | See Our Full Breakdown |
| roof cargo box aerodynamic for ev | Capacity | Material | Color |
|---|---|---|---|
| Yakima SkyBox NX Skinny Roof C | 12 cubic feet | — | Black |
| Thule Arcos Box | 14 cubic feet | Plastic | Black |
| INNO Wedge Plus BRM865 Matte B | 13 cubic feet | Hard Shell | Matte Black |
| INNO WEDGE660 White 11 cu ft R | 11 cubic feet | Hard shell | White |
| Thule Motion 3 Rooftop Box | — | — | — |
| Thule Pulse 2 M Roof-Mounted C | 14 Cubic Feet | ASA-ABS plastic | — |
| Naturnest Rooftop Cargo Carrie | 12.7 cu ft (360L) | XPE foam core with heavy-duty Oxford fabric | — |
More Details on Our Top Picks
Yakima SkyBox NX Skinny Roof Cargo Carrier, 12 Cu Ft, SKS Lock, Black
The Yakima SkyBox NX Skinny stands out for its sleek, space-efficient design that minimizes wind resistance, making it a strong choice for EV owners focused on reducing drag and improving fuel economy. Compared with larger, bulkier models like the Thule Motion 3, this carrier offers a more streamlined profile, though it sacrifices some capacity at just 12 cubic feet. Its dual-sided access enhances convenience, especially for frequent users, while the durable full-metal handle and SKS lock add security. However, its capacity may not satisfy those needing to carry larger gear, and installation depends on crossbar compatibility. Its slim design is ideal for drivers prioritizing aerodynamics over maximum cargo volume.
Pros:- Minimizes wind resistance with a sleek, aerodynamic shape
- Dual-sided opening for quick access from either side
- Secure SKS lock system enhances safety
Cons:- Limited to 12 cubic feet, may not suit larger loads
- Installation relies on compatible crossbars, which could be restrictive
Best for: EV owners seeking a compact, aerodynamic carrier that balances security and ease of access for skis, snowboards, or gear up to 195cm.
Not ideal for: Travelers requiring high-volume storage or carrying bulky cargo that exceeds 12 cubic feet, as this model’s capacity is limited.
- Capacity:12 cubic feet
- Fits skis/snowboards:up to 195cm
- Locking system:SKS lock
- Color:Black
- Design:Skinny, dual-sided opening
- Build material:Full metal handle, NX nano-texture
Our verdict“This carrier appeals most to EV drivers looking for a compact, low-profile option that enhances aerodynamics without sacrificing security.”
Thule Arcos Box
The Thule Arcos Box is crafted for drivers who value high-end aerodynamic design combined with ample storage—up to 14 cubic feet. Its low-profile, sleek shape reduces wind drag more effectively than bulkier options like the INNO Wedge Plus, translating into improved fuel savings on EVs. The SlideLock system offers secure, one-handed operation, but it requires use with the Thule Arcos Platform, adding a layer of complexity and cost. Its all-black aesthetic and aerodynamic form make it less suitable for those seeking a variety of color choices or simple, standalone installation. This model suits those prioritizing a premium look and aerodynamic efficiency, especially for longer trips.
Pros:- Aerodynamic shape reduces wind resistance and improves fuel efficiency
- Low-profile, easy to load with minimal ground clearance
- Secure SlideLock system with separate locking and opening functions
Cons:- Requires the Thule Arcos Platform for installation, adding cost
- Limited color options restrict personalization
Best for: Eco-conscious drivers who want a stylish, aerodynamic carrier with high capacity and secure locking, compatible with Thule’s platform system.
Not ideal for: Casual users or those on a tight budget, since its requirement for the platform and limited color options increase overall cost and complexity.
- Item Dimensions:67 x 31.5 x 19 inches
- Capacity:14 cubic feet
- Material:Plastic
- Color:Black
- Suggested Users:unisex-adult
- Included Components:Hitch cargo carrier
Our verdict“This pick is best for drivers who want a premium, aerodynamic cargo box with high capacity and are willing to invest in a complete system.”
INNO Wedge Plus BRM865 Matte Black 13 cu ft Roof Rack Cargo Box with Dual-Side Opening
The INNO Wedge Plus BRM865 offers a solid balance of capacity and compatibility, making it ideal for those who carry skis or snowboards regularly. Its 13 cubic feet of space is slightly larger than the SkyBox NX, but what sets it apart is its universal mounting system, fitting a broad range of cross bars including aero, square, and round types. This flexibility makes it a good choice for owners with varied or non-standard racks. The dual-side opening simplifies access, and its matte black finish reduces glare and improves aerodynamics. However, it’s not designed for very bulky cargo beyond skis or snowboards, and its weight may be a concern for some users during installation or removal.
Pros:- Universal mounting system fits various cross bars
- Dual-side opening for easy access
- Secure lock with keys enhances safety
Cons:- Limited to skis and snowboards, not ideal for larger or irregular cargo
- Potentially heavy, making handling more difficult
Best for: Skiers and snowboarders who want a reliable, easy-to-install carrier compatible with most racks and seeking good security.
Not ideal for: Owners looking for a general-purpose cargo box for bulky or non-sport gear, as its design favors specific gear types.
- Capacity:13 cubic feet
- Fits:6-8 pairs of skis or 4-6 snowboards
- Material:Hard Shell
- Color:Matte Black
- Opening:Dual-side
- Compatibility:Aero, square, round, and most factory cross bars
Our verdict“This model suits active outdoor enthusiasts needing a versatile, secure carrier for skis or snowboards that adapts to many rack types.”
INNO WEDGE660 White 11 cu ft Roof Cargo Box, Low Profile, Dual-Side Opening, Lockable, Compatible with Aero & Square Bars
The INNO WEDGE660 excels as a low-profile, aerodynamic carrier that emphasizes minimal wind resistance while providing 11 cubic feet of storage. Its slim profile and dual-side opening make it ideal for drivers who prioritize fuel efficiency, especially on EVs, without sacrificing quick access. Its tool-free installation and compatibility with various rack types add to its convenience, although its capacity is modest compared to larger models like the Thule Motion 3. The absence of explicit weatherproofing features might concern those planning extended, all-weather trips. Overall, this box is best for those who value aerodynamics and ease of use over maximum volume.
Pros:- Low-profile, aerodynamic design reduces wind drag
- Dual-side opening for convenient access
- Tool-free, easy to mount on various rack types
Cons:- Limited capacity for bulky or multiple large items
- No explicit weatherproofing features may limit durability in harsh conditions
Best for: City or highway drivers wanting a sleek, low-profile cargo box that enhances fuel economy and offers simple installation.
Not ideal for: Families or travelers requiring large capacity for bulky gear, as its 11 cubic feet might be restrictive.
- Capacity:11 cubic feet
- Color:White
- Material:Hard shell
- Compatibility:Aero, square, round, and factory racks
- Opening:Dual-side
- Made in:Japan
Our verdict“This carrier is ideal for drivers seeking an aerodynamic, compact solution that simplifies access and reduces fuel impact.”
Thule Motion 3 Rooftop Box
The Thule Motion 3 is distinguished by its forward-leaning, wing-shaped profile that significantly cuts wind resistance, making it an excellent choice for EV owners focused on maximizing fuel efficiency. Its advanced mounting system, PowerClick, provides a visual torque indicator, ensuring secure attachment with minimal effort. While its design promises improved aerodynamics, the lack of detailed size or capacity figures makes it harder to determine if it fits larger gear needs, and its premium features come with a higher price tag. This model appeals most to drivers who want a blend of high performance, ease of use, and a sleek appearance but are prepared for a more costly investment.
Pros:- Aerodynamic, wing-shaped profile reduces drag
- Easy one-handed operation for opening and closing
- Secure mounting with visual torque indicator
Cons:- Lack of explicit size and capacity details could be limiting
- Higher cost due to advanced features and design
Best for: Tech-savvy drivers seeking a highly aerodynamic, feature-rich cargo box optimized for fuel efficiency and security.
Not ideal for: Budget-conscious consumers or those needing large capacity for bulky items, as detailed size and capacity are not specified and features come at a premium.
- Design:Wing-shaped profile with forward-leaning nose
- Mounting System:PowerClick quick-mount
- Locking Mechanism:SlideLock
- Accessories:Interior lighting, protective liner
Our verdict“This model suits those prioritizing cutting-edge aerodynamics and smart features over straightforward capacity or lower cost.”
Thule Pulse 2 M Roof-Mounted Cargo Box, 14 Cubic Ft
The Thule Pulse 2 M stands out for its generous 14 cubic feet of capacity combined with a streamlined shape that minimizes wind resistance, making it a top choice for those prioritizing aerodynamics on electric vehicles. Its easy, tool-free installation with a torque indicator simplifies setup, especially compared to bulkier or more complex systems like the Thule Motion 3. The weather-resistant ASA-ABS material ensures durability in harsh conditions, though its size can be a drawback for smaller cars, potentially causing overhang or clearance issues. Compared to the Naturnest Rooftop Carrier Bag, it offers better protection and security but at the expense of added weight and rigidity. This model makes the most sense for drivers needing substantial capacity without sacrificing aerodynamics, but it’s less ideal for compact EVs with limited roof space.
Pros:- Large 14 cubic feet cargo capacity for multiple gear types
- Easy tool-free installation with torque indicator for secure fit
- Weather-resistant ASA-ABS plastic resists harsh conditions
Cons:- Can be bulky, potentially overhanging small vehicle roofs
- Limited compatibility with some roof sizes and shapes
- No included mounting hardware, requiring separate purchase
Best for: Drivers with larger roof racks seeking high capacity and weather protection for long trips.
Not ideal for: Owners of small or compact EVs that have limited roof space or minimal clearance, due to its bulk.
- Capacity:14 Cubic Feet
- Load Capacity:75 kg
- Material:ASA-ABS plastic
- Access:Dual-side opening
- Design:Streamlined shape
Our verdict“This cargo box offers the best combination of capacity and aerodynamics for larger vehicles needing reliable protection and ease of use.”
Naturnest Rooftop Cargo Carrier Bag, Waterproof Soft Rooftop Box, Aerodynamic Low-Profile Design for Better Gas Mileage, Fits All Vehicles with/Without Roof Rack – SUV, Truck, Van, Jeeps
The Naturnest Rooftop Cargo Carrier Bag excels by providing 12.7 cubic feet of waterproof storage in a lightweight, foldable design that emphasizes aerodynamics—making it ideal for EV drivers concerned about fuel efficiency. Its soft Oxford fabric with a foam core offers flexibility and ease of storage when not in use, unlike the rigid Thule Pulse 2 M. While it reduces wind noise and drag thanks to its low profile, it requires careful sealing to maintain waterproof integrity, especially compared to hard-shell options. It’s less protective against impacts but compensates with simple, tool-free installation using included straps. This makes it perfect for casual camping or road trips where fuel economy is a priority, but less suited for rough handling or extreme weather conditions.
Pros:- Aerodynamic low-profile design improves fuel efficiency
- Lightweight at just 9.3 lbs for easy handling and installation
- 100% waterproof fabric withstands harsh weather
Cons:- Less protective than rigid hard-shell carriers
- Requires careful sealing to ensure waterproof performance
- May not fit vehicles without a proper weather seal above the door
Best for: Eco-conscious travelers who prioritize reduced wind resistance and easy storage, especially on smaller or varied vehicles.
Not ideal for: Users needing high-impact protection or maximum security, since soft fabric offers less durability and security than hard shells.
- Capacity:12.7 cu ft (360L)
- Weight Limit:77.2 lbs (35kg)
- Weight:9.3 lbs (4.2kg)
- Material:XPE foam core with heavy-duty Oxford fabric
- Dimensions:Folded thickness: 1.6 inches
Our verdict“This soft, aerodynamic cargo bag is best suited for drivers seeking lightweight, weatherproof storage that boosts fuel economy without adding bulk.”
How We Picked
The products included in this roundup were selected based on their aerodynamics, capacity, build quality, and compatibility with EVs. We prioritized low-profile designs that minimize wind resistance, as this directly impacts EV efficiency and range. Ease of installation, security features, and overall value also factored into our rankings. We aimed to include a range of options from soft bags to hard shells, ensuring diversity for different budgets and needs. The final list reflects a balance between aerodynamic performance and practical usability for electric vehicle owners.| roof cargo box aerodynamic for ev | Color | Material |
|---|---|---|
| Yakima SkyBox NX Skinny Roof C | Black | — |
| Thule Arcos Box | Black | Plastic |
| INNO Wedge Plus BRM865 Matte B | Matte Black | Hard Shell |
| INNO WEDGE660 White 11 cu ft R | White | Hard shell |
| Thule Motion 3 Rooftop Box | — | — |
| Thule Pulse 2 M Roof-Mounted C | — | ASA-ABS plastic |
| Naturnest Rooftop Cargo Carrie | — | XPE foam core with heavy-duty Oxford fabric |
Factors to Consider When Choosing Roof Cargo Box Aerodynamic For Ev
Choosing the right roof cargo box for your EV requires balancing aerodynamics, capacity, and convenience. A more aerodynamic design helps reduce wind resistance, which directly impacts your vehicle’s range. Capacity should match your typical travel needs without overly increasing drag. Compatibility with your roof rack system and vehicle shape is also vital to ensure a secure fit. Additionally, consider ease of installation and security features to protect your belongings. Being aware of these factors helps avoid common pitfalls like buying a box that’s too bulky or incompatible with your vehicle.Aerodynamics and Profile
The primary factor influencing an EV’s efficiency is the cargo box’s shape and profile. Low-profile, streamlined designs like the Yakima SkyBox NX Skinny significantly cut down on air resistance compared to taller, boxier models. Keep in mind, however, that the more aerodynamic the design, the less capacity you might get. Striking a balance between size and shape is key—selecting a box that offers enough volume without creating excessive drag is the ideal approach for maximized efficiency.
Capacity and Size
Capacity should align with your typical storage needs, whether for family trips, camping gear, or sports equipment. Larger boxes like the Thule Motion 3 provide more volume but tend to be bulkier and less aerodynamic. Smaller, low-profile options are better suited for frequent short trips or minimal gear, helping to preserve the vehicle’s range. Always measure your roof space and check compatibility to avoid installing a box that’s too large or awkward for your vehicle.
Material and Build Quality
Durability matters, especially for those who travel often or in harsh weather. Hard-shell cargo boxes made from high-quality, impact-resistant plastics tend to last longer and resist UV damage. Soft bags like the Naturnest offer flexibility and easier handling but usually provide less security and protection from the elements. Consider your climate and storage needs when choosing between hard and soft options—quality materials can justify a higher price by extending product lifespan.
Compatibility and Installation
Ensuring the cargo box fits your roof rack system and vehicle shape is essential. Some models are designed specifically for certain rack types, while others are universal. Easy-to-install features like quick-release mounts and dual-side opening can save time and frustration, especially for those who frequently remove or transfer the box. Check weight limits, as overly heavy boxes can pose safety risks or reduce your vehicle’s handling characteristics.
Additional Features and Security
Features like integrated locks, keyless entry, and dual-side opening enhance convenience and security. A lockable box protects your belongings from theft, especially during stops or overnight stays. Dual-side opening allows easier access from either side of the vehicle, which is helpful in tight parking spaces. Weigh the added cost of these features against their benefits, especially if you plan to leave the box unattended for extended periods.
Frequently Asked Questions
Will adding a roof cargo box significantly reduce my EV’s range?
Yes, adding a roof cargo box can increase aerodynamic drag, which in turn can slightly reduce your EV’s driving range. The extent of this reduction depends on the box’s shape, size, and how much it protrudes from the roof. Choosing a low-profile, aerodynamic design minimizes this impact, helping you preserve more range during your trips. However, the added weight also plays a role, so balancing capacity with aerodynamics is important for maintaining efficiency.
How do I know if a roof cargo box is compatible with my EV’s roof rack?
Compatibility depends on the type of roof rack system your EV uses, such as factory-installed rails, crossbars, or roof rails. Most cargo boxes specify compatible rack types and weight limits. To avoid issues, measure your roof’s dimensions and check the manufacturer’s specifications for both your vehicle and the cargo box. It’s also wise to verify the maximum load capacity of your roof rack to ensure safe installation and operation.
Are soft cargo bags really a good alternative to hard-shell boxes for EVs?
Soft cargo bags like the Naturnest can be a practical choice for those seeking lightweight, flexible storage options. They tend to be less aerodynamic, which can slightly increase drag, but they are easier to store when not in use and often cheaper. They provide less protection from weather and theft compared to hard-shell options, so consider your environment and security needs when choosing. For frequent long-distance trips or harsh climates, a hard-shell box might be more suitable despite the extra weight.
What is the best way to maximize efficiency when using a roof cargo box on an EV?
To maximize efficiency, select a low-profile, aerodynamic cargo box that minimizes wind resistance. Mount it as close to the roof as possible to reduce turbulence and ensure proper weight distribution. Remove the box when not in use to avoid unnecessary drag, and load it evenly to maintain vehicle balance. Also, drive at moderate speeds, as higher velocities increase aerodynamic drag, further reducing your EV’s range.
How much capacity do I really need for typical family trips?
Most family trips require between 10 and 15 cubic feet of cargo space, enough for luggage, gear, and some outdoor equipment. If you frequently travel with bulky items or multiple passengers, opting for a larger box like the Thule Pulse 2 or Thule Motion 3 makes sense. For shorter trips or minimal gear, smaller low-profile options provide enough space without adding unnecessary drag, helping to preserve the vehicle’s efficiency.
Conclusion
For those seeking the best overall balance of aerodynamics and capacity, the Yakima SkyBox NX Skinny makes a compelling choice. If you prioritize maximum capacity and are willing to accept a slightly higher drag, the Thule Motion 3 stands out. Budget-conscious buyers or those with minimal storage needs will find the Naturnest Rooftop Cargo Carrier Bag offers a lightweight, flexible alternative. Beginners or infrequent travelers should consider ease of installation and security features, making soft or smaller hard-shell boxes attractive options. Ultimately, your choice depends on your typical travel demands and how much you value efficiency versus storage volume.
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