Most Subaru owners look into a cargo box when the cabin starts to feel full. Travel gear, camping equipment, and winter bags add up quickly.
But the right setup depends on the vehicle. What fits easily on an Outback can feel different on a Forester or Crosstrek. Roof height, crossbar position, and hatch clearance all affect real-world use.
This guide focuses on practical use across all three, with an emphasis on what actually matters once the box is installed: fit, noise, clearance, and daily usability.
The goal is simple. Add space without adding frustration.
Popular cargo boxes Forester owners consider
Many Forester owners start with a few mid-size cargo boxes that balance space and everyday usability.
• Thule Force 3 L
• Yakima SkyBox 16 Carbonite
• Inno Roof Cargo Box BRM2020ST
These are commonly chosen because they are easy to fit, widely available, and fall in the size range that works well on a Forester.
Why Cargo Box Choice Matters on a Subaru Forester
The Forester’s taller roof changes how cargo boxes behave
The Forester sits higher than a Crosstrek, and that changes how a cargo box feels in daily use.
With the box higher in the airflow, you’ll get more wind noise at highway speeds and a slight drop in fuel efficiency. Larger, boxier designs also feel it more in crosswinds. Shape matters more than brand here. Lower, tapered boxes stay quieter and more stable.
Loading is easier than on taller SUVs, but still not effortless. Once the box is on, you’ll likely need a small step stool, especially to reach the center. Side-opening designs make a noticeable difference if you load often.
Height adds up fast. The factory crossbars already sit high, and a box can push you close to garage limits. Taller setups also catch more wind, which adds to noise and drag.
In practice, that shifts the decision. A lower-profile, aerodynamic box is usually easier to live with than a larger one. On a Forester, a streamlined mid-size box tends to be the best balance.
Roof length vs hatch clearance
The Forester gives you more usable roof length, so fitting a cargo box is generally easier. You have room to adjust position instead of forcing it to fit.
But hatch clearance still matters.
The rear hatch opens high, and if the box sits too far back, it can make contact. This usually shows up after install, not on paper. The extra roof length helps because you can slide the box forward, but only if your crossbars allow it.
Box shape plays a role here. Tapered rear designs leave more room for the hatch, while squared-off boxes are less forgiving.
In practice, mount the box as far forward as possible. If you’re between sizes, a slightly shorter box is usually easier to live with than a longer one that limits hatch access.
Why daily driving comfort matters for Forester owners
A cargo box changes how the Forester feels every day, not just on trips.
Noise is the first thing you’ll notice. At highway speed, some boxes stay fairly quiet, while taller or more squared designs are much more noticeable. Shape matters more than brand here.
Fuel economy takes a small hit as well, especially with larger boxes or higher setups.
Height is the part most people overlook. Add a box and you’re suddenly thinking about garages, parking decks, and low clearances.
In practice, this is why going smaller and more aerodynamic often makes sense. A lower-profile box is usually quieter, more efficient, and easier to live with day to day.
Key Things to Look for in a Cargo Box for a Forester
Box length and roof balance
Box length affects how easily a cargo box fits on a Forester and how stable it feels once installed.
The Forester has more usable roof length than a Crosstrek, but placement still matters. A box that is too long may sit too far back or need to be pushed forward more than ideal. Mid-length boxes are usually easier to center on the roof.
Balance depends on how the weight sits between the crossbars. When positioned well, weight is evenly distributed, the vehicle feels more stable at speed, and mounting points are under less stress. If the box is too long or poorly placed, more weight shifts behind the rear bar, hatch clearance becomes tighter, and stability can be affected in wind.
The goal is to keep the box centered while leaving enough space for the rear hatch to open fully. Longer boxes can work, but mid-size options are usually easier to position and live with on a Forester.
Mounting track adjustment range
Mounting track adjustment determines how easily a cargo box can be positioned on a Forester.
Most boxes use clamps that slide along tracks underneath. The length of those tracks controls how far forward or backward the box can move, which directly affects hatch clearance and roof balance.
Longer tracks make it easier to position the box forward, maintain hatch clearance, and keep the load centered. Shorter tracks limit placement and often leave the box sitting slightly too far back.
The Forester gives you more flexibility than smaller Subarus, but track length still matters. Boxes with more mounting adjustment are generally easier to position and live with.
Some commonly used options with good adjustment range include the Thule Force 3 L, Yakima SkyBox 16 Carbonite, and Rhino-Rack Zenith Cargo Box.
Box height and overall vehicle clearance
Box height affects where a Forester can park and drive once a cargo box is installed.
A Forester sits in the mid-60 inch range. Add crossbars and a cargo box, and total height can approach 75–80 inches depending on the setup. That starts to matter in garages, parking decks, older city structures, and even some drive-throughs and car washes.
Many spaces list 7-foot clearance, but usable height is often lower due to beams, tracks, or lighting.
Lower-profile boxes are easier to live with in tight spaces. Taller boxes carry bulkier gear but push the vehicle closer to clearance limits.
If you park indoors regularly, measure your total height after installation and compare it to your lowest clearance.
For tighter garage situations, many owners lean toward lower-profile options like the Yakima GrandTour Lo, Inno Wedge, and Inno Shadow.
Interior shape vs advertised storage volume
Cargo boxes are usually sold by cubic-foot capacity, but that number does not always reflect how the space actually packs.
Most boxes taper at the front and rear, which reduces usable width, so bulky items tend to fit best in the center. Lower lids can also limit usable height near the edges.
That is why two boxes with similar capacity can feel very different in real use. Soft gear like duffels and sleeping bags is easier to pack, while rigid items like coolers and bins need more interior height.
The key is not just how much space a box has, but what type of gear it fits well.
Many owners use soft bags instead of rigid bins to better fit the tapered interior. Compression duffel bags or roof box packing sets make it easier to maximize space and keep gear organized.
Cargo Box Size Categories That Work Well on a Forester
Low-profile cargo boxes
Low-profile cargo boxes are a good fit for Forester owners who want extra storage without noticeably changing how the vehicle drives.
Because they sit closer to the roof, they create less wind resistance. That usually means quieter highway driving, less drag, and a more stable feel in crosswinds.
The tradeoff is interior height. These boxes work best for soft gear like duffel bags, jackets, and camping equipment, but can feel tight for bulky items like coolers or storage bins.
For everyday use, low-profile boxes offer one of the easiest setups to live with, adding storage while keeping noise, height, and driving impact to a minimum.
Common lower-profile options include the Yakima GrandTour Lo, Inno Wedge, and Inno Shadow.
Mid-size cargo boxes
Mid-size cargo boxes are often the most practical choice for a Forester. They provide useful storage without adding as much height, noise, or fit complexity as larger options.
They offer enough space for travel bags, camping gear, and longer items like skis, while still fitting comfortably on the roof with good balance and hatch clearance.
Compared to other sizes, they are easier to live with day to day. Larger boxes add capacity but feel more noticeable, while smaller boxes can be limiting.
For most Forester owners, mid-size boxes strike the best balance between storage and everyday usability.
Common options include the Yakima SkyBox 16 Carbonite, Thule Force 3 L, and Inno Roof Cargo Box BRM2020ST.
Large cargo boxes for maximum storage
Large cargo boxes offer the most storage on a Forester, but they come with more noticeable tradeoffs.
They work well for family trips, bulky gear, or packing for multiple people. The added length and height make it easier to carry large bags, coolers, and longer items like skis.
The downside is how they affect the vehicle. Larger boxes add more height, create more wind noise, and are more sensitive to placement when dialing in hatch clearance and roof balance.
They make the most sense if you regularly need the extra capacity. For occasional use, they can feel oversized compared to mid-size options.
Common larger options include the Yakima SkyBox 18, Yakima SkyBox NX XXL, and Thule Force 3 XL.
Comparing cargo box size categories
Choosing the right size comes down to how much space you need and how much impact you want on daily driving. The differences are less about specs and more about how each size feels in real use.
| Category | Typical Capacity | Roof Impact | Best For |
| Low-profile cargo boxes | ~10–13 cu ft | Lowest height, least wind noise, minimal handling impact | Everyday use, soft gear, frequent driving |
| Mid-size cargo boxes | ~13–16 cu ft | Moderate height and noise, balanced feel | Most trips, mixed gear, all-around use |
| Large cargo boxes | ~16–22 cu ft | Highest height, more wind noise, more noticeable in wind | Family travel, bulky gear, multi-person trips |
Low-profile boxes are the easiest to live with day to day. Mid-size boxes offer the best balance for most Forester owners. Large boxes provide maximum space but come with more tradeoffs in height, noise, and overall feel.
Fitment Factors Unique to the Subaru Forester
Crossbar spacing and mounting flexibility
Crossbar spacing affects how easily a cargo box can be positioned on a Forester.
The distance between the bars determines how much room you have to move the box forward or backward. A wider spread gives you more flexibility to center the box and maintain hatch clearance, while a tighter spread can limit placement and force the box slightly off position.
Most boxes use sliding mounting tracks, but the usable adjustment depends on both track length and bar spacing. Even a well-designed box can feel restricted if the bars are too close together.
The Forester generally offers more spacing than smaller Subarus, but placement still matters. The goal is to keep the box centered while leaving enough room for the rear hatch to open fully.
Adjustable aero-bar setups like the Thule WingBar Evo, Yakima JetStream, and Rhino-Rack Vortex offer more flexibility for dialing in placement and maintaining hatch clearance, especially compared to fixed-position factory bars.
Hatch swing clearance
Hatch swing clearance is one of the most important fitment checks on a Forester.
The rear hatch opens upward and slightly forward, so a box that sits too far back can block it before it fully opens. Even small interference can make daily loading more frustrating.
The Forester gives you more room to position the box forward, but placement still matters, especially with longer boxes or limited mounting adjustment.
The goal is to keep the box as far forward as possible while staying balanced over the crossbars. After installation, open the hatch slowly and check for clearance.
Roof load limits and weight distribution
Roof load limits determine how much you can safely carry on a Forester.
Subaru typically rates the Forester’s dynamic roof load around 150–176 pounds, including the crossbars, cargo box, and everything inside. Since many boxes weigh 35–55 pounds, a significant portion of that limit is used before adding gear.
That makes packing important. Weight should stay centered between the crossbars and distributed evenly. Heavier items are best placed low and near the middle.
In real use, cargo boxes work best for lighter gear like duffels, clothing, and camping equipment, while heavier items are better kept inside the vehicle.
How Cargo Boxes Affect Driving on a Forester
Wind noise at highway speeds
Wind noise is one of the first changes you notice after adding a cargo box to a Forester.
Height and shape make the biggest difference. Lower-profile boxes sit closer to the roof and create less turbulence, while taller boxes are more noticeable at highway speeds. A tapered front also helps reduce noise.
Crossbars matter as well. Aerodynamic bars are generally quieter than square or round ones.
In daily use, lower-profile, streamlined boxes are easier to live with, while taller boxes trade some comfort for added storage.
Fuel economy changes
Adding a cargo box usually lowers fuel economy, especially at highway speeds.
The extra drag increases with speed, so the impact is small around town but more noticeable on longer drives. Lower-profile, more aerodynamic boxes tend to reduce this effect, while taller boxes create more drag.
Most Forester owners see a modest drop in MPG and remove the box when not in use to return to normal efficiency.
Crosswind sensitivity on taller vehicles
A cargo box adds surface area above the roof, which can make a Forester more sensitive to crosswinds.
Because the vehicle sits higher, wind has more leverage on the box. You may notice this on open highways or when passing large trucks.
Box height matters most. Taller boxes catch more wind, while lower-profile designs feel more stable. A centered, evenly loaded box also helps reduce movement.
In real use, the effect is usually manageable but more noticeable in windy conditions.
Cargo Box vs Other Roof Storage Options for Forester Owners
Cargo box vs cargo basket
Cargo boxes and cargo baskets both add roof storage, but they serve different needs.
A cargo box is enclosed, so it protects gear from weather and road grime. It is also quieter at highway speeds, making it a better choice for luggage, clothing, and anything that needs to stay clean and dry.
A cargo basket is open and more flexible. Bulky or irregular items are easier to load, but gear is exposed and often needs straps, nets, or covers. Baskets also tend to create more wind noise.
In real use, cargo boxes are better for protected travel storage, while cargo baskets are better for bulky gear and flexible loading.
Owners who prefer open roof storage often choose baskets like the Yakima LoadWarrior, Yakima MegaWarrior, or Thule Canyon XT.
Because baskets leave gear exposed, many also add ratchet straps, a cargo net, or a weatherproof cargo bag for better security and protection.
Cargo box vs hitch cargo carrier
A cargo box adds storage on the roof, while a hitch carrier adds it behind the vehicle.
Hitch carriers are easier to load, especially for heavy items like coolers or bins, and they avoid adding height or wind noise. The tradeoff is exposure and rear access, since most are open and can interfere with the hatch.
In real use, hitch carriers are better for heavy or bulky gear. Cargo boxes are better for protected storage and keeping gear out of the way during daily driving.
If lifting gear to the roof feels like a chore, a hitch-mounted setup can be easier to live with day to day.
Many owners use a folding hitch carrier like the MaxxHaul 70115 or CURT 18153 for bulky gear, then add a waterproof cargo bag such as the Rightline Gear Hitch Cargo Bag or Mockins Cargo Bag to keep everything protected on longer trips.
A hitch step like the MaxxHaul Hitch Step or AMP Research BedStep can also make roof access easier when needed.
Comparing roof and rear storage options
Choosing between a cargo box, basket, or hitch carrier comes down to how you use the space and what matters most day to day.
| Storage Option | Weather Protection | Highway Comfort | Loading Flexibility | Best Use Scenarios |
| Cargo box | Excellent (fully enclosed) | Quietest, most aerodynamic | Limited by interior shape | Travel gear, luggage, weather-sensitive items |
| Cargo basket | Low (unless covered) | More wind noise | Very flexible for bulky or irregular gear | Coolers, firewood, outdoor gear |
| Hitch cargo carrier | Moderate (with cargo bag) | No roof impact on noise or height | Best for heavy or bulky items | Heavy gear, long trips, avoiding roof height |
In real use, cargo boxes are best for protected storage and quieter driving. Cargo baskets offer flexibility for oversized gear, while hitch carriers make loading heavy items easier and keep weight off the roof.
Common Mistakes Forester Owners Make When Buying a Cargo Box
Choosing a box that is taller than necessary
One of the most common mistakes is choosing a cargo box that is taller than your gear requires.
Taller boxes add space, but they also increase wind noise, reduce fuel efficiency, and raise overall vehicle height, which can limit garage and parking access.
In many cases, that extra height goes unused. Soft gear like duffels, jackets, and camping equipment fits easily in lower-profile boxes.
Matching box height to your typical gear usually leads to a quieter, more efficient, and easier setup to live with.
Ignoring mounting adjustment limits
Another common mistake is overlooking how much adjustment a cargo box actually has.
Most boxes use sliding clamp tracks, but the range varies. If adjustment is limited, the box may be forced to sit farther back than ideal, even if it fits the crossbars.
That can affect hatch clearance and shift weight behind the rear bar, making the setup feel less balanced.
The Forester gives you more flexibility than smaller Subarus, but track length still matters. Boxes with longer adjustment are easier to position and live with.
Buying based on capacity instead of real packing needs
A common mistake is choosing a cargo box based on maximum capacity instead of how you actually pack.
Larger boxes add space, but also bring more height, wind noise, and fit challenges. They can be harder to position and may create clearance issues in daily use.
In many cases, that extra capacity goes unused. Most trips only require space for soft gear like duffels and travel bags.
Choosing a box for your typical use, rather than your biggest trip, usually leads to a more practical setup.
When a Cargo Box Makes the Most Sense for a Forester
Family road trips and long-distance travel
Cargo boxes make the biggest difference on longer trips when interior space starts to feel limited.
Moving bags and travel gear to the roof frees up room inside the Forester, which means more legroom, less clutter, and easier access to essentials during stops.
For family trips or multi-day travel, a cargo box helps the vehicle feel more comfortable without needing more space inside.
Outdoor gear and camping trips
Cargo boxes work well for camping trips where gear is bulky, mixed, and often dirty or damp.
They keep tents, sleeping bags, and duffels protected from weather while keeping dirt and moisture out of the cabin. For Forester owners, that added space and separation makes packing simpler and the interior easier to live with.
Winter travel and weather protection
Cargo boxes are especially useful in winter because they keep gear protected from snow, slush, and road spray.
They keep bags and outerwear dry and prevent wet gear from soaking the interior, making winter travel cleaner and easier to manage.
FAQs
What size cargo box fits best on a Subaru Forester?
Mid-size (13–16 cu ft). Best balance of space and everyday usability.
Can a cargo box block the Forester’s rear hatch?
Yes. If it sits too far back. Slide it forward to fix.
Do cargo boxes reduce MPG on a Forester?
Slightly, mainly at highway speeds.
Are aftermarket crossbars necessary for a cargo box?
No, but they help with adjustability and fit.
Can the same cargo box work on Forester and Outback?
Yes. The Outback just has more placement flexibility.
Are cargo boxes noisy on a Forester?
Some are. Lower-profile boxes are quieter.
Final thoughts
There is no perfect cargo box for a Forester. Every setup is a tradeoff between space, height, noise, and daily usability.
The best choice is based on how you actually use the vehicle. Most owners are better off sizing for typical trips, not the biggest possible load.
Focus on fit, hatch clearance, and overall height. Those factors matter more than maximum capacity.
From here, the next step is comparing specific box types and models based on how you travel.
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