
Yes, a Sorento can fit three car seats, but the configuration is key. The third-row is not suitable for most car seats. The real challenge is installing three across the second row. Success depends heavily on the specific width and design of the car seats you choose. With the right, narrow models, it's absolutely achievable, though accessing the third row becomes difficult with car seats installed in the second row.
The most critical factor is the second-row bench seat, which is a 60/40 split. To fit three car seats, you must use the wider segment. The Sorento is equipped with a full set of LATCH (Lower Anchors and Tethers for CHildren) systems. There are two complete LATCH sets in the second-row outboard seats, and the rear-center position uses the vehicle's seat belt for installation. It's crucial to check your Sorento's manual, as some model years may have specific lower anchor rules for the center seat.
Not all car seats are created equal. You'll need to look for models known for their narrow profiles. Slim or compact car seats are designed specifically for this "three-across" challenge. Brands like Diono, Clek, and Graco have models that are significantly narrower than standard seats. It's highly recommended to try a test fit before purchasing if possible.
Here’s a comparison of key interior dimensions that impact car seat installation:
| Interior Measurement | Kia Sorento (2023+) | Honda Pilot (2023+) | Toyota Highlander (2023+) |
|---|---|---|---|
| Second Row Hip Room | 55.3 inches | 57.8 inches | 54.7 inches |
| Second Row Shoulder Room | 58.6 inches | 61.0 inches | 58.7 inches |
| Number of Top Tether Anchors | 4 (2nd & 3rd row) | 5 (2nd & 3rd row) | 4 (2nd row only) |
While the Sorento's dimensions are competitive, the real-world fit comes down to the physical shape of the car seats. A combination of a rear-facing infant seat, a forward-facing convertible seat, and a booster seat might fit better than three bulky convertible seats. Remember, a proper installation is non-negotiable. Each seat should not move more than one inch side-to-side or forward at the belt path.

















We did it in our 2021 Sorento, but it took some research. The trick is to buy slim car seats. We use a Diono Radian in the center and two Graco SlimFit seats on the sides. It’s a tight squeeze, but they all fit securely. Buckling the kid in the middle is a bit of a hassle, honestly. Forget about using the third row easily with this setup—the car seats block the fold-and-slide function. It works for our family of five, but it’s not what I’d call spacious.

From a safety perspective, the Sorento provides the necessary hardware. You have lower anchors in the two window seats and a seat belt for the center. Most importantly, there are top tether anchors for all second-row seating positions, which is essential for forward-facing seats. The vehicle's structure is sound. The main issue is ensuring you can achieve a proper, tight installation for all three seats without them interfering with each other. Always follow both the car seat and vehicle owner’s manual instructions precisely.

I was skeptical, but after measuring and reading forums, I made it work. You absolutely cannot use wide, all-in-one seats. I ended up selling our old bulky ones and investing in three Diono Radian 3R seats. They are pricey but designed for this. The Sorento's second row is just wide enough. The biggest downside is that the front passenger seat has to be moved pretty far forward to accommodate the rear-facing seat behind it. It’s a sacrifice for sure, but it beats having to buy a minivan.

The answer is a conditional yes. The Sorento's interior width is comparable to other midsize SUVs, but it's at the tighter end of the spectrum. Your success hinges entirely on selecting narrow-profile car seats. Before you commit, look up the specific width dimensions of the car seats you're considering. Check parent forums and YouTube for "three across Sorento" setups to see what combinations other families have successfully used. It’s a puzzle, but one that can be solved with the right pieces.


