We researched and compared the best roof boxes for Subaru Outback based on manufacturer specifications, published safety standards, and aggregated owner feedback. Our evaluation covers fitment, durability, ease of use, and real-world performance to help you choose the right cargo box for your Outback.
| Photo | Product | Score | Buy |
|---|---|---|---|
 |
Thule Motion XT L Top Pick 16 cu ft, 75 lb capacity, 84.5 x 34 x 17.5 in |
9.1 | 🛒 Check Price |
 |
Yakima GrandTour 16 Runner Up 16 cu ft, 75 lb capacity, 84 x 34 x 17 in |
8.8 | 🛒 Check Price |
 |
SportRack Vista XL Rear Opening Best Value 15 cu ft, 75 lb capacity, 63 x 33 x 16 in |
8.2 | 🛒 Check Price |
 |
Thule Force XT L Durable Choice 18 cu ft, 110 lb capacity, 83 x 33.5 x 18.5 in |
8.7 | 🛒 Check Price |
 |
Yakima CBX 16 Aerodynamic Design 16 cu ft, 75 lb capacity, 84 x 34 x 17 in |
8.4 | 🛒 Check Price |
 |
Goplus 15 Cubic Feet Roof Cargo Box Budget Pick 15 cu ft, 75 lb capacity, 63 x 33 x 16 in |
7.3 | 🛒 Check Price |
 |
Rola 59001 Vortex Cargo Box Compact Option 11 cu ft, 75 lb capacity, 63 x 31 x 16 in |
7.8 | 🛒 Check Price |
1. Thule Motion XT L: Top Pick
In our evaluation, the Thule Motion XT L stands out for its aerodynamic shape and robust construction. Owner feedback consistently highlights its quiet performance on the Outback, even at highway speeds. The dual-side opening is a practical feature for loading and unloading in tight spaces.
However, this box commands a higher price, and some users note that the interior straps can be finicky. It may not be the best choice for those seeking a budget-friendly option or for owners who rarely use a roof box.
- Aerodynamic design reduces wind noise and drag on the Outback
- Dual-side opening for convenient access from either side of the vehicle
- PowerClic mounting system provides quick and secure installation
Pros: Excellent build quality and weather sealing; Low profile fits Outback without exceeding roofline
Cons: Premium price point may not suit all budgets
2. Yakima GrandTour 16: Runner Up
The Yakima GrandTour 16 impressed us with its thoughtful interior design and secure mounting system. The SmartShelf helps prevent items from shifting, and the torque-limiting tool reduces the risk of over-tightening. Owner reviews on Outback forums are positive regarding fit and finish.
On the downside, the box is slightly taller than some competitors, which may interfere with garage clearance. Also, the price is still on the higher side. It is less ideal for those with limited vertical space or a strict budget.
- SmartShelf interior organizer keeps cargo separated and accessible
- Torque-limiting tool ensures proper mounting force every time
- Integrated lid struts prevent accidental closure
Pros: SmartShelf is a unique organizational feature; Secure and easy to install with included torque tool
Cons: May require crossbar adapters for some Outback models
3. SportRack Vista XL Rear Opening: Best Value
For Subaru Outback owners on a budget, the SportRack Vista XL offers solid value. We found that it provides adequate storage for weekend trips and fits well on the Outback’s crossbars. The rear opening is convenient for accessing gear without walking around the vehicle.
However, the build quality is not on par with Thule or Yakima. Some owners report minor water ingress in heavy rain, and the latch can be stiff. It is best suited for occasional use where premium features are not required.
- Rear opening design allows easy access from the back of the vehicle
- Universal mounting hardware fits most factory and aftermarket crossbars
- Satin black finish complements the Outback's styling
Pros: Affordable price point without sacrificing essential features; Relatively lightweight and easy to handle
Cons: Latch mechanism feels less robust than premium models; Not as aerodynamic, may produce more wind noise
4. Thule Force XT L: Durable Choice
The Thule Force XT L is built to last, with a tough ABS shell that stands up to rough handling and weather. In our assessment, it is one of the most durable options for the Outback. The high load capacity is a bonus for families or adventurers with heavy gear.
However, the weight and size make it a two-person job for installation. The added height also increases wind resistance and fuel consumption. It is not recommended for those who need a lightweight, low-profile box for daily commuting.
- High load capacity of 110 lbs accommodates bulky or heavy gear
- Textured ABS shell resists scratches and UV damage
- SlideLock system provides secure, one-handed latching
Pros: Extremely durable construction, ideal for harsh conditions; Larger capacity than most competitors
Cons: Heavier and bulkier, may be difficult to mount alone; Higher profile can reduce fuel economy noticeably
5. Yakima CBX 16: Aerodynamic Design
The Yakima CBX 16 is designed with aerodynamics in mind, making it a great match for the Outback’s fuel-conscious owners. We noted that the low profile reduces wind resistance, and the dual-side opening is convenient. The integrated T-slot tracks add versatility for carrying skis or other gear.
However, the tapered shape reduces interior volume compared to boxier designs, so bulky items may not fit as well. The price is also high, and some users find the mounting instructions unclear. It is best for those prioritizing quiet and efficient travel over maximum capacity.
- Sleek, low-profile shape minimizes wind noise and drag
- Integrated T-slot tracks allow easy mounting of accessories
- Dual-side opening with gas struts for smooth operation
Pros: Excellent aerodynamics for better fuel efficiency; Easy access from both sides
Cons: Interior space is slightly less usable due to tapered shape; Premium price similar to Thule Motion XT
6. Goplus 15 Cubic Feet Roof Cargo Box: Budget Pick
The Goplus 15 Cubic Feet Roof Cargo Box is a no-frills option for Subaru Outback owners who need a roof box infrequently. We found that it fits basic needs and is easy to install. The low weight is a plus for those who store the box when not in use.
However, durability is a concern. Multiple owner reports mention hinge failure and water leaks after a year. Safety ratings are lower due to less secure mounting. We recommend this only for light, occasional use and not for long trips or harsh weather.
- Low-cost option for occasional use on the Outback
- Universal fit with adjustable mounting clamps
- Lightweight at just 28 lbs for easy handling
Pros: Very affordable, accessible to most budgets; Lightweight and easy to mount by one person
Cons: Build quality is below average; may crack in extreme cold; Latch and seal are less reliable over time
7. Rola 59001 Vortex Cargo Box: Compact Option
The Rola 59001 Vortex is a compact solution for Outback owners who need a smaller box for everyday items or occasional use. We appreciated the easy tool-free mounting and the aerodynamic shape that helps with fuel economy. It fits well on the Outback without blocking the rear view.
However, the 11 cubic foot capacity is limiting for extended travel or bulky gear. Some owners report that the clamps need periodic tightening. It is best for singles or couples who only need extra space for luggage or sports equipment.
- Compact size fits Outback without overhang, good for garage clearance
- Aerodynamic vortex shape reduces drag
- Tool-free mounting with quick-release clamps
Pros: Small footprint is easy to store and fits in tight garages; Tool-free installation is quick and convenient
Cons: Limited capacity may not suit longer trips or larger families; Mounting clamps can loosen over time if not checked
Frequently Asked Questions
What size roof box fits the Subaru Outback?
Most roof boxes between 11 and 18 cubic feet fit the Outback. Measure your crossbar spread and check garage clearance. A box around 84 inches long and 34 inches wide is typical for the Outback without overhang.
Will a roof box affect my Outback's fuel economy?
Yes, any roof box increases drag and reduces fuel economy, typically by 10-20% on the highway. Aerodynamic models like the Thule Motion XT or Yakima CBX minimize the impact.
Can I use a roof box with a sunroof?
Yes, but ensure the box does not block the sunroof opening. Most Outback models have crossbars that position the box above the roof, leaving the sunroof functional if the box is mounted behind it.
How much weight can I put in a roof box on my Outback?
The Outback’s roof load limit is typically 150 lbs including the box and cargo. Most boxes have a 75-110 lb capacity. Always check your owner’s manual and the box’s specifications.
Do I need special crossbars for a roof box on my Outback?
Factory crossbars work with most universal mounting systems. However, some boxes like the Yakima GrandTour may require additional adapters for aero crossbars. Confirm compatibility before purchase.
Our Verdict
After researching and comparing the top options, we recommend the Thule Motion XT L as the best roof box for Subaru Outback due to its balance of aerodynamics, build quality, and ease of use. For a more budget-conscious choice, the Yakima GrandTour 16 is a strong runner-up with its unique interior organization.
