Camping in a BMW X3 SUV

There's enough room to sleep in a BMW X3 if it's just you, and maybe enough for a very close couple if neither of you minds being tight on space. I tested this setup by myself, and at a little over 6 feet tall I was able to fit by moving the front passenger seat all the way forward, folding both rear seats down, and sleeping on the passenger side.

What surprised me is that space wasn't really the biggest problem. The bigger issues were heat, bugs, and how the mattress handled the transition where the flat cargo area runs out. My cheap Intex mattress was actually fine, and the rear headrests helped support the head end more than I expected once I extended them, but I still stuffed clothes underneath that area to give it some extra support.

So yes, sleeping in a BMW X3 can work. It's not just about finding a mattress that fits. You've also got to figure out how to stay comfortable once the flat cargo floor runs out, how to keep cool on a hot night, and how to get airflow without letting the bugs in.

Why I Wanted to Camp in My BMW X3

Most of my hiking is done at a local park, but I like getting out to explore other trails in New Jersey and nearby. The problem is that my normal car camping setup is pretty involved. I usually bring a pop up canopy, a large tent that comfortably fits a queen-sized air mattress, a hammock, cooking gear, and enough food for a couple of nights. That all takes time to get out of storage, set up, break down, clean, dry out, and put away again.

Sometimes I just want to do a quick overnight trip so I can hit new trails early in the morning without turning the whole thing into a major production. Sleeping in the X3 seemed like a good way to stay closer to nature and still keep the trip simple.

How Much Room Is There in a BMW X3 for Sleeping?

The main numbers that matter are these: the narrowest part of the cargo area is about 43 inches wide, and the flat area only goes about 62.75 inches to the top of the folded seats. If I move the front seats forward it's about 6' of length. So sleeping in the X3 isn't just about whether your mattress is technically long enough. It's also about how well it bridges that transition and supports your head and shoulders.

At a little over 6 feet tall, I just barely fit. I moved the passenger seat all the way forward, folded both rear seats down, and slept on the passenger side. I originally thought I'd sleep with my head toward the hatch, but because of how I parked I ended up sleeping with my head toward the front. That actually worked out better because it felt more natural to have my head a little higher than my feet, and it also put me closer to the windows for airflow.

What I Used on This Trip

Essential for Sleeping in the X3

• Intex inflatable air mattress
• Sleeping bag and pillow
• undefined used as bug screens for the rear windows
• FRIZCOL 3-in-1 camping fan
• Clothes bag for extra support under the head end of the mattress

Other Gear I Brought for the Trip

• Camping chair
• Cooking tote with stove, plates, utensils, pots, and pans
• Camping tote with hammock, shovel, knife, rain gear, rope, stakes, bug repellent, lanterns, and odds and ends
• Cooler and water jug
• Small bag of non-refrigerated food
• Charcoal and chimney starter
• Rain fly poles made out of EMT conduit
• Clothes and toiletry bag

The biggest difference between this and my normal tent setup is what I leave home: my tent, queen air mattress, tarp for under the tent, and 10' x 10' pop up canopy. The canopy takes up a lot of room. The tent and ground cloth take a lot of time to set up, clean, break down, and air out when I get home.

I could pare things down even more if I wanted to. I could bring less charcoal, a smaller cooler, and split one of my gear totes into two so I could leave part of it behind on solo trips. But for a grab-and-go overnight setup, this worked pretty well.

How I Set Up the BMW X3 for Sleeping

Air Mattress

I used the Intex inflatable air mattress on the passenger side. It isn't very thick, but it was more comfortable than a thin backpacking pad. It fit my setup without a problem and worked better than I expected.

There's a little gap between the top of the folded rear seat and the front passenger seat. I was worried that area would feel too floppy to be comfortable, but the air mattress actually bridged it better than I expected. The rear headrests helped support the head end of the mattress once I extended them, and I also stuffed clothes and other soft items underneath that area for a little extra support.

Sleeping Pads I'm Thinking About Trying Next

My original setup worked fine for me but camping is better as a couple. Plus I usually use this setup when it gets colder and a thicker foam pad will keep me warmer. Since the narrowest part of the cargo area is about 43 inches, I've been looking at tapered pads that make better use of the available width.

• Cheaper option I'm considering: Exped Ultra 3R Duo LW. I like that option because it should be lighter, less expensive, and easier to justify for milder-weather trips.
• More supportive option I'm leaning toward: Exped MegaMat Auto. It costs a lot more, but it should be warmer and more supportive over the seat and headrest transition, which matters a lot in the X3.

I haven't tested either of these in the X3 yet. I'm interested in them because my Intex mattress was fine, but a thicker self-inflating pad should make the setup warmer in cool weather and may support that transition even better.

Ventilation: Window Screens, Fan, and Heat

Window Screens

I found these sun shades on Amazon and they worked great as bug screening. They're basically like a giant mesh sock that fits over the door and covers the open window area. That let me keep the windows open for airflow without inviting bugs in.

The X3 also has a giant panoramic sunroof. I still want to experiment with a way to screen that area too for even more ventilation. There's a mode where the visor stays mostly in place except for a small opening while the roof tilts up, but I didn't think to try that on this trip.

Fan

On this trip I used a battery-powered tent fan I got from Aldi, and it made a huge difference. I couldn't get it stable near a window, so I ran a short length of rope between the ceiling grab handles and positioned the fan over the passenger headrest so it was blowing directly on me. Without it I don't think I would've fallen asleep.

If I were buying one today for this setup, I'd probably start with the FRIZCOL 3-in-1 camping fan. It has a light, a remote, a built-in hook making it very similar to the Aldi fan.

During late fall/early spring I run the car heater for a little bit just to take the chill off but I don't let it get too warm. If it's hot I kick off the covers and will wake up cold. 

Locking the Doors Without Setting Off the Alarm

Before I went to sleep, I used the keyless entry remote to lock the doors and then clicked the lock button again after a second. That disabled the motion and tilt sensor so I could keep the car locked without worrying about the alarm going off if I moved around inside.

That's one of those small details that makes a big difference when you're actually trying to sleep in an SUV.

The Dining Fly

Even though it wasn't supposed to rain, I still wanted some kind of tarp setup outside. Part of that is practical. It gives me a place to sit, cook, and keep gear out of the weather and gives me some shade. But part of it is also that some parks and campgrounds are more comfortable with setups that clearly look like camping rather than just sleeping in a car. Even where that isn't enforced much, a site with a fly up and a hammock strung between trees looks more like a real campsite than just a car parked with someone sleeping inside.

For this trip I had a small rain fly for my hammock and used some poles I made out of 1/2" EMT conduit, but it didn't work out that well. The fly was too small and didn't have enough grommets to secure it in a way that really supported the poles properly. I also needed to make the poles taller to account for sag.

Had it rained, I probably would've been okay, but I was glad it stayed dry. I also bought this undefined because it's big enough and has center grommets that should help keep the poles straighter. That seems like the more promising direction for future trips.

How It Turned Out

I slept very comfortably in the back of my BMW X3. The only real issue was the heat, and that would've been a problem in the tent too. It wasn't too hard getting in and out of the vehicle, although the X3's rear hatch isn't especially easy to open from the inside.

The view through the panoramic sunroof was really nice to wake up to.

I was also able to keep the air mattress inflated and the basic setup mostly intact the next day while I drove to the lake and the trailhead. I just had to reorganize some of the gear.

If I were in an area with more bear activity, I'd think differently about how and where I stored food, and I'd want a better bear-resistant cooler. But for this trip, the overall setup worked.

I can definitely make it better. I should probably bring a smaller cooler when I'm solo, and I should split one of my larger totes into two so I can leave part of it home. But the basic idea worked exactly the way I hoped it would: less setup time, less cleanup time, and more time hiking.

I cook on charcoal in the fire ring at night, then throw some logs over the coals when I'm done cooking so I can relax by the fire. If you're curious why I still like bringing charcoal on camping trips, see my post on why I use charcoal when camping.

I don't think there's enough room in the X3 for a raised sleeping platform like some people build in larger vehicles. For me that would make the space feel too tight to the ceiling. But with a few refinements, especially a better insulated pad, I think this is a very workable setup for quick trips.

I got a lot of hiking in over those two days and explored trails I'd never been on before. I also came home with some nice photos, including a couple near the lake and wetlands at sunset.

FAQ: Sleeping in a BMW X3

Final Thoughts

Sleeping in a BMW X3 is absolutely possible, especially if your goal is a quick overnight trip rather than building out a full vehicle camping rig. I thought about building a sleeping platform and a drawer for cooking but there isn't that much headroom as it is, especially if you're not by yourself. Plus I have a portable camp kitchen now that works well and doesn't get cooking smells in my car. For me, the biggest win was not having to spend nearly as much time setting up camp or putting everything away afterward.

Would I do it again? Definitely. The next thing I want to improve is the sleeping pad. My original air mattress was fine, but I get why a better insulated pad that fits the X3 more deliberately could give even better support where the cargo area transitions toward the folded seats and extended headrests.

When I got home, cleanup was a lot easier than it would've been with my normal setup. I threw some things in the dishwasher, hand washed a few others, let them dry, and packed them away. That alone makes this kind of quick car camping trip worth doing again.