Will a Car Fit in a 10x20 Storage Unit? The Real Answer

You’ve found a great deal on a 10x20 storage unit is a rectangular indoor or outdoor space measuring 10 feet wide by 20 feet long, totaling 200 square feet of floor space. It’s affordable, it’s available now, and you’re thinking about rolling your sedan into it. But before you hand over your credit card, there is one critical question: will your car actually fit?

The short answer is yes, but with major caveats. A standard compact car or mid-size sedan usually fits comfortably. A large SUV, pickup truck, or van? Not so much. If you park wrong, you might not be able to close the door-or worse, damage your vehicle trying to squeeze in.

Understanding the True Dimensions of a 10x20 Unit

When storage companies advertise a "10x20" unit, they are referring to the exterior footprint. The actual interior space is smaller due to wall thickness, insulation, and structural supports. In most facilities, you can expect to lose about 6 to 12 inches from each dimension.

• Interior Width: Approximately 9 feet 6 inches to 9 feet 8 inches.
• Interior Length: Approximately 19 feet 4 inches to 19 feet 8 inches.
• Ceiling Height: Typically 8 feet, though some newer units offer 9 or 10 feet.

This means your usable floor space is closer to 190 square feet, not 200. More importantly, the width is the bottleneck. Most cars are wider than 5 feet, meaning you have very little room to spare on either side when driving straight in.

Which Cars Actually Fit Inside?

To determine if your vehicle fits, you need to compare its external dimensions against the unit's interior clearance. Here is how common vehicle types stack up:

If you drive a Honda Civic is a compact car known for its fuel efficiency and manageable size, making it ideal for tight storage spaces, you’ll have plenty of room to open doors and walk around. However, if you own a full-size SUV like a Chevrolet Suburban, the length alone exceeds the unit’s capacity. You simply cannot fit it.

The Door Problem: Why Width Matters More Than Length

Length is rarely the issue. Even a long sedan fits within the 19-foot interior. The real challenge is width and door swing. When you park a car in a storage unit, you aren’t just storing the metal box; you need access to it.

If your car is 6 feet wide and the unit is 9.5 feet wide, you have 3.5 feet of total clearance-roughly 17.5 inches on each side. That sounds okay until you try to open the driver’s door. A typical car door extends out 2 to 3 feet when fully open. In a 10x20 unit, opening the door fully will likely hit the wall or the roll-up door track.

Here is what this looks like in practice:

• Cracking the door: You can get in and out, but it requires careful maneuvering.
• Side mirrors: Foldable mirrors are essential. Extended mirrors will scrape against the walls.
• Entry angle: You may need to enter at a slight diagonal rather than straight-on to maximize center clearance.

How to Measure Your Vehicle Correctly

Don’t guess. Grab a tape measure and check these three specific points:

1. Total Width: Measure from the outermost point of the left mirror (folded in) to the right mirror. Do not include extended mirrors.
2. Total Length: Measure from the front bumper to the rear bumper. Include any tow hitches or bike racks attached to the rear.
3. Height: Ensure your car isn’t taller than 8 feet (including roof racks). Some older units have low ceilings.

If your car’s width is over 6.5 feet, proceed with caution. If it’s over 7 feet, look for a larger unit immediately.

Pro Tips for Parking in a 10x20 Unit

Once you confirm your car fits, follow these steps to avoid scratches and frustration:

• Use a guide: Place a piece of tape on the floor outside the unit to mark where your wheels should align. This helps you drive in straight without hitting the sides.
• Fold everything in: Retract side mirrors, fold down antennas, and remove roof boxes. Every inch counts.
• Leave room for the door: Park slightly off-center toward the passenger side if possible, giving yourself more space to exit the driver’s side without hitting the wall.
• Check for obstructions: Look for pipes, electrical boxes, or uneven flooring inside the unit before moving your car in.

Alternatives If Your Car Doesn't Fit

If your vehicle is too large for a 10x20, don’t panic. You have options:

• 10x30 Unit: Adds another 10 feet of length, perfect for trucks and large SUVs.
• Outdoor Parking Spot: Many facilities offer cheaper uncovered spots specifically for vehicles. These are often wider and longer than enclosed units.
• Two 10x10 Units: Sometimes renting two adjacent small units and removing the shared wall (if allowed) creates a custom-sized space.

Cost Considerations in Perth, Australia

In Perth, storage prices vary by location and facility amenities. As of 2026, a 10x20 unit typically costs between AUD $250 and $450 per month. Climate-controlled units cost more but protect your car’s interior from the intense Western Australian heat. If you’re storing a classic car or luxury vehicle, the extra investment in climate control is worth it to prevent leather cracking and dashboard warping.

Always ask about insurance requirements. Most facilities require you to carry separate coverage for stored vehicles. Standard home insurance policies often exclude items kept in third-party storage.