Subaru Outback Car Camping Mattress Guide 2026

Before investing in any car camping mattress, you need to understand exactly what you're working with inside your Outback. The sleeping dimensions vary slightly between model years, but the general measurements remain consistent across most generations. The 2020-2024 Outback models offer a cargo length of approximately 75.7 inches with the rear seats folded flat, though the actual usable sleeping length extends closer to 72-74 inches once you account for the wheel wells and the gap near the front seats. The width of your sleeping platform measures around 42-44 inches at the widest point in the cargo area, though this narrows to approximately 38-40 inches near the wheel wells. This dimension is crucial because it determines whether you can comfortably fit a standard twin mattress (38 inches wide) or need to look at custom-sized options. Many car campers find that a mattress slightly narrower than the maximum width works better, as it leaves room for storing gear alongside your sleeping area. Height clearance is another important consideration that many first-time car campers overlook. With the cargo cover removed, you have approximately 32-34 inches of vertical space above the cargo floor. This means you'll want to choose a mattress that inflates to 4-6 inches thick at most, leaving plenty of room for sitting up and moving around while still providing adequate cushioning for comfortable sleep. Key dimensions to remember for your Outback sleeping setup include:

Maximum sleeping length: 72-75 inches (varies by model year)

Maximum width at wheel wells: 38-40 inches

Maximum width at cargo area: 42-44 inches

Height clearance: 32-34 inches with cargo cover removed

Gap between cargo floor and front seats: 6-8 inches deep

Wheel well intrusion on each side: 4-5 inches

Recommended mattress thickness: 3-6 inches

Ideal mattress dimensions: 72" x 40" or custom fit

When shopping for a car camping mattress for your Subaru Outback, you'll encounter three main categories: inflatable air mattresses, self-inflating foam pads, and dedicated foam mattresses. Each type offers distinct advantages and trade-offs that make them suitable for different camping styles and preferences. Understanding these differences will help you choose the option that best matches your needs. Inflatable air mattresses represent the most popular choice among Outback car campers, and for good reason. These mattresses pack down incredibly small for storage, inflate quickly using a 12-volt pump powered by your car's outlet, and offer adjustable firmness levels that let you dial in your perfect comfort setting. High-quality car-specific air mattresses are designed with contoured shapes that fit around wheel wells and maximize sleeping space. The main drawbacks include potential punctures, the need for a pump, and the tendency to lose some air pressure overnight as temperatures drop. Self-inflating foam pads bridge the gap between convenience and comfort. These pads contain open-cell foam that expands when you open the valve, drawing in air automatically. They typically reach about 80% inflation on their own, and you can add a few breaths of air to achieve your desired firmness. Self-inflating pads offer better insulation than pure air mattresses—an important consideration for camping in cooler weather. However, they're bulkier than deflated air mattresses and may not conform as well to the Outback's cargo area contours. Dedicated foam mattresses, particularly tri-fold memory foam options, provide the most home-like sleeping experience. These mattresses can be custom cut to fit your Outback's dimensions exactly, and they never require inflation or worry about punctures. Memory foam conforms to your body for excellent pressure relief and remains stable throughout the night. The trade-off is bulk—foam mattresses take up significant storage space and may need to be stored at home when not in use rather than kept in the vehicle. Consider these factors when choosing your mattress type:

Storage space available: Air mattresses win for minimal storage needs

Setup time preferences: Foam requires zero setup; air needs inflation

Temperature conditions: Foam and self-inflating pads insulate better

Durability concerns: Foam eliminates puncture worries

Budget considerations: Quality air mattresses often cost less than premium foam

Comfort priorities: Memory foam typically provides the best sleep quality

Frequency of use: Frequent campers may prefer foam for convenience

Vehicle storage: Consider whether mattress stays in car or at home

After extensive research and gathering feedback from the car camping community, we've identified the mattresses that consistently receive the highest praise from Subaru Outback owners. These recommendations span different price points and mattress types to help you find the perfect match for your needs and budget.

Luno Air Mattress 2.0

The Luno Air Mattress 2.0 stands out as one of the most popular purpose-built car camping mattresses on the market. Designed specifically for SUVs and crossovers, this mattress features side cutouts that work around wheel wells and an extended base that fills the gap between folded seats and the cargo floor. The mattress inflates to approximately 4 inches thick using the included 12-volt pump, which plugs directly into your Outback's power outlet. What makes the Luno particularly well-suited for the Outback is its thoughtful design that addresses common car camping challenges. The mattress surface measures 76 inches long by 52 inches wide when fully inflated, but the integrated side extensions can be tucked in to accommodate narrower cargo areas. The PVC-free construction uses TPU material that's more durable and environmentally friendly than traditional air mattresses. Owners report that the Luno holds air well throughout the night, even in temperature fluctuations.

Hiraliy Car Air Mattress

For budget-conscious campers who don't want to sacrifice quality, the Hiraliy Car Air Mattress offers excellent value. This mattress is specifically designed for SUV cargo areas and includes the side extensions needed to fill gaps in the sleeping platform. The flocked top surface provides a comfortable, fabric-like feel that helps sleeping bags stay in place rather than sliding around on slick plastic. The Hiraliy comes with a 12-volt electric pump that inflates the mattress in about three minutes. At approximately 4 inches thick when inflated, it provides adequate cushioning without eating into your headroom. The mattress dimensions work well for the Outback, and the included carrying bag makes storage and transport convenient. While it may not match the durability of premium options, the Hiraliy performs admirably for its price point.

TESMAT Tesla/SUV Camping Mattress

Despite the Tesla branding, the TESMAT works exceptionally well in Subaru Outbacks and other similarly sized SUVs. This memory foam mattress uses CertiPUR-US certified foam that provides excellent comfort and support. The tri-fold design allows the mattress to fold compactly for storage while unfolding to create a seamless sleeping surface. The TESMAT comes in multiple sizes, and the medium option fits Outbacks particularly well. At 3 inches thick, it provides enough cushioning for comfortable sleep while leaving ample headroom. The included waterproof cover protects against spills and makes cleaning easy. Many Outback owners appreciate that foam mattresses like the TESMAT eliminate concerns about air leaks and require zero setup time.

Exped MegaMat Duo 10

For campers who prioritize comfort above all else and don't mind investing in premium gear, the Exped MegaMat Duo 10 represents the gold standard in car camping sleep systems. This self-inflating mattress combines a 3.9-inch foam core with air inflation capability, creating a supremely comfortable sleeping surface that rivals your bed at home. The MegaMat's rectangular shape works well in the Outback's cargo area, and the horizontal baffles prevent the "rolling together" problem that plagues some air mattresses when two people share the bed. The integrated mini pump allows you to add air for firmness adjustment, while the foam core provides consistent insulation and support. Yes, it's expensive—but for regular car campers, the sleep quality may justify the investment.

Even the best mattress won't perform optimally unless you properly prepare your Outback's cargo area for sleeping. Taking time to set up your sleeping platform correctly makes a significant difference in comfort and ensures you get restful sleep throughout your camping trip. These preparation steps apply regardless of which mattress type you choose. Start by completely folding down your rear seats and ensuring they lock flat. In most Outback models, the rear seats fold to create a nearly level surface with the cargo floor, but there's typically a slight incline or gap. Remove the cargo cover and any cargo organizers that would interfere with your mattress placement. Clean the cargo area thoroughly—any debris or sharp objects could puncture an air mattress or create uncomfortable lumps under foam mattresses. Addressing the gap between the folded seats and the front seat backs is crucial for comfortable sleep. This gap typically measures 6-8 inches deep and spans the full width of the vehicle. Many car campers fill this space with storage bins, rolled blankets, or purpose-built gap fillers. Some air mattresses include extensions designed to bridge this gap, but if yours doesn't, DIY solutions work well. Filling this gap creates a more level sleeping surface and prevents the feeling of sliding toward the front of the vehicle during sleep. Consider these setup tips for optimal comfort:

Use a cargo liner underneath your mattress for cleanliness and moisture protection

Fill the seat gap with gear bags or blankets wrapped in a sheet for a level surface

Place a foam or emergency blanket beneath air mattresses for insulation

Use window covers or curtains for privacy and temperature regulation

Keep a small flashlight accessible for nighttime needs

Position your pillow toward the tailgate for easier exit if needed

Test your setup in the driveway before your first camping trip

Consider mattress toppers for additional comfort on longer trips

Your mattress forms the foundation of your car camping sleep system, but several accessories can dramatically improve your overall comfort and convenience. These additions address common challenges like temperature regulation, privacy, and organization that every car camper encounters. Investing in the right accessories transforms good sleep into great sleep. Window covers deserve top priority on your accessory list. Subaru offers factory privacy shades for some Outback models, but aftermarket options often work just as well at lower cost. Window covers serve multiple purposes: they block light for sleeping in (essential when camping at sites without shade), provide privacy from curious passersby, and help regulate interior temperature by adding insulation. Reflective sunshades designed for windshields can be repurposed for side and rear windows with a bit of customization. Temperature management accessories become critical for comfortable sleep across seasons. For warm weather camping, a 12-volt fan provides airflow without draining your battery excessively. Positioning the fan to draw air through cracked windows creates cross-ventilation that makes summer nights bearable. For cold weather camping, an insulated mattress pad or closed-cell foam layer beneath your mattress prevents heat loss to the cold cargo floor. Some car campers add heating blankets powered by the 12-volt outlet for extra warmth. Lighting and organization accessories round out your sleep system. Battery-powered LED lights with magnetic bases attach to the Outback's metal roof for convenient ambient lighting. Hanging organizers designed for car camping attach to the front seat headrests and keep essentials like phones, glasses, and water bottles within reach. A small trash bag holder keeps your sleeping area clean, while a shoe organizer provides a place for footwear that would otherwise clutter your limited floor space. Must-have accessories for your Outback sleep system:

Window covers or sunshades for all windows including sunroof

12-volt portable fan for summer ventilation

Insulated mattress pad for cold weather camping

Battery-powered LED lantern with magnetic mounting

Headrest-mounted organizer for small items

Shoe storage solution (bag or hanging organizer)

Compact pillow designed for camping

Sleeping bag rated for expected temperatures

Portable power station for charging devices

Emergency items: flashlight, first aid kit, multi-tool

Different camping styles demand different mattress solutions, and what works perfectly for weekend warriors may not suit full-time van lifers or occasional adventurers. Understanding how your camping habits align with mattress characteristics helps you make a choice you'll be happy with for years to come. Let's examine how different camping approaches affect the ideal mattress selection. Weekend campers who take two to four trips per season should prioritize convenience and easy storage. For this use pattern, an inflatable air mattress makes excellent sense—it stores compactly in your garage between trips, sets up quickly at the campsite, and offers good comfort for short durations. The occasional use doesn't justify the bulk of a permanent foam mattress, and the moderate frequency doesn't stress the durability of quality air mattresses. Budget-friendly options in the $75-150 range serve weekend campers well. Frequent campers who hit the road multiple times per month have different priorities. Setup time becomes more significant when you're making camp regularly, which favors self-inflating pads or foam mattresses that require minimal effort. Durability also matters more with increased use—premium materials justify their higher cost when amortized across dozens of nights per year. These campers often leave their mattress set up in the vehicle or stored in the garage in ready-to-go condition, making bulk less of a concern. Extended trip campers spending weeks at a time on the road should invest in maximum comfort. When your car serves as your primary bedroom for an extended period, the quality of your sleep directly impacts your trip enjoyment and safety behind the wheel. Premium foam mattresses or high-end self-inflating pads pay dividends in sleep quality over long hauls. These campers should also consider mattress toppers, quality bedding, and temperature regulation systems that transform their Outback into a comfortable mobile bedroom. Choose your mattress based on camping frequency:

Occasional (1-3 trips/year): Budget air mattress, $50-100

Regular (monthly trips): Quality air mattress, $100-200

Frequent (weekly use): Self-inflating pad or foam, $150-300

Extended trips (weeks at a time): Premium foam mattress, $200-400

Full-time car camping: Top-tier mattress with accessories, $300-500+

Mixed use with partners: Consider width and individual comfort needs

Variable weather camping: Prioritize insulation properties

Minimalist camping: Compact options that leave room for gear

What size mattress fits best in a Subaru Outback for car camping? A mattress measuring approximately 72-75 inches long and 38-42 inches wide fits the Subaru Outback's cargo area optimally when rear seats are folded. Twin-size mattresses (38" x 75") work well for solo campers, while purpose-built car camping mattresses with widths around 48-52 inches accommodate couples but may require tucking edges near wheel wells. Thickness should stay between 3-6 inches to maintain adequate headroom for sitting up. Can two adults sleep comfortably in a Subaru Outback? Yes, two adults can sleep in a Subaru Outback, though comfort depends on individual sizes and sleep preferences. The 42-44 inch cargo width accommodates couples who don't mind close quarters—similar to a small full-size mattress. Taller individuals over 6 feet may need to sleep diagonally or with slightly bent knees. Many couples find the Outback comfortable for weekend trips, while extended camping might benefit from one partner sleeping in a rooftop tent. Do I need to fill the gap between the seats and cargo floor? Filling the gap between folded rear seats and the front seat backs significantly improves sleeping comfort. This 6-8 inch gap can cause your mattress to sag or create an uncomfortable slope toward the front of the vehicle. Effective gap fillers include storage bins, rolled sleeping bags, camping gear in stuff sacks, or purpose-built platforms. Many car-specific mattresses include extensions designed to bridge this gap automatically. How do I prevent condensation when sleeping in my Outback? Condensation occurs when warm, moist breath contacts cold windows and surfaces. Prevent excessive condensation by cracking windows slightly (even 1/4 inch helps), using a small battery-powered fan to circulate air, and avoiding cooking or boiling water inside the vehicle. Wiping down windows before sleep and using moisture-absorbing products can help. Some campers use window rain guards that allow ventilation even in light rain. What's better for Outback camping: air mattress or foam? Both work well; the best choice depends on your priorities. Air mattresses offer compact storage, adjustable firmness, and lower cost, but require inflation and can puncture. Foam mattresses provide consistent comfort, better insulation, and zero setup time, but take up more storage space. For a detailed comparison, see our foam vs air mattress guide. For occasional camping, air mattresses make practical sense. For frequent camping or those prioritizing comfort, foam often proves worthwhile despite the bulk. How thick should my car camping mattress be? A thickness of 3-6 inches provides the optimal balance between comfort and practicality for Subaru Outback car camping. Mattresses under 3 inches may not provide adequate cushioning over the cargo floor and seat backs. Mattresses over 6 inches reduce headroom significantly, making sitting up difficult. Most purpose-built car camping mattresses fall in the 4-5 inch range, which offers good comfort while maintaining usable interior space. Can I use a regular queen mattress in my Outback? A standard queen mattress (60" x 80") is too wide and long for the Subaru Outback's cargo area. The maximum width between wheel wells is approximately 40 inches, and usable length is around 72-75 inches. Attempting to force a queen mattress into this space results in bunching, poor fit, and uncomfortable sleep. Purpose-built car camping mattresses or properly sized foam mattresses work much better. How do I stay warm while car camping in my Outback? Stay warm by using an insulated mattress pad beneath your mattress, choosing a sleeping bag rated 10-15 degrees below expected temperatures, and covering windows with insulating shades. Wear warm layers to bed, including a hat if temperatures drop significantly. Crack windows slightly to prevent condensation from making bedding damp. Some campers use 12-volt heated blankets or run the heater periodically, though this requires monitoring battery levels. Should I leave my mattress in my Outback all the time? Whether to leave your mattress in the vehicle depends on your camping frequency and mattress type. Air mattresses should be stored deflated between uses to prevent stress on seams. Foam mattresses can remain in the vehicle if you have the cargo space to spare, making spontaneous camping easier. Consider that leaving gear in your car adds weight (reducing fuel economy) and may attract thieves if visible. Most car campers store mattresses at home and load them before trips. What's the best way to deflate and store an air mattress quickly? Deflate your air mattress by opening all valves and rolling from the opposite end toward the valve, pushing air out as you go. Some electric pumps include a deflate function that speeds this process. Fold the deflated mattress loosely rather than compressing tightly for storage—tight folding can stress seams over time. Store in the included bag in a cool, dry location. Allow the mattress to dry completely before storing if any moisture is present to prevent mold growth. Do Subaru Outback cargo dimensions change between model years? Cargo dimensions vary somewhat between Subaru Outback generations. The 2020-2024 sixth-generation Outback offers the largest cargo space in the model's history. Earlier generations (2015-2019, 2010-2014) have slightly smaller dimensions, typically 2-4 inches shorter in cargo length. For other Subaru models, check our Forester mattress guide. Always measure your specific Outback's cargo area with seats folded before purchasing a mattress, as trim levels and optional features can also affect available space. Can I run my car's heater while sleeping for warmth? Running your Outback's heater while sleeping is possible but carries important safety considerations. Never sleep with the engine running in an enclosed space due to carbon monoxide risk—ensure the tailgate or windows provide adequate ventilation. Running the heater intermittently with ventilation is safer than continuous operation. Be aware that extended idling drains fuel and may violate regulations at some campgrounds. Battery-powered heating alternatives offer a safer option for cold-weather car camping.