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The 2025 Kia EV9 handles most of the car seat years, but the third-row booster is a real weak point at C. It does not fit three car seats across, in the captain's-chair configuration Cars.com tested. Cars.com's grades: A for LATCH, the infant seat, the rear-facing convertible, the forward-facing convertible, the second-row booster and the third-row LATCH; B for the third-row forward-facing convertible; C for the third-row booster and the third-row entry.
Fit grades from Cars.com's Car Seat Check, conducted by Cars.com editors, including a certified car seat technician. Cars.com's check was written about the 2024 Kia EV9; Cars.com says little has changed for 2025.
Car seats we carry, and what to check in the Kia EV9
Below is a short list from the seats we carry, one stage at a time. We have not tested them in a Kia EV9. After the list is what Cars.com's findings say to check in this vehicle before you buy.
Infant seats
Convertible seats
Booster
What to check in your Kia EV9
- Which second row you have. Cars.com tested the Kia EV9 with second-row captain's chairs, so its three-across answer covers that configuration only. Three-across shoppers should see which cars fit three car seats.
- Booster position. The third-row booster graded C: Cars.com struggled to get it flush because of the fixed head restraints, and the buckles sink into the cushions, held in by straps. Check both in person if a booster has to ride there.
Widths, where shown: manufacturer spec, widest point. Prices update automatically from our store.
Still choosing a stage? The car seat finder asks a few questions and narrows our range, and the compare tool lines up two seats side by side.
The grades at a glance
| Test | Grade |
|---|---|
| LATCH | A |
| Infant seat | A |
| Rear-facing convertible | A |
| Forward-facing convertible | A |
| Booster, second row | A |
| LATCH, third row | A |
| Forward-facing convertible, third row | B |
| Booster, third row | C |
| Third-row entry | C |
Where the anchors are
Lower anchors. Second row: two sets, partially exposed. Third row: two sets, exposed.
Top tether anchors. Two midway down the second-row seatback, clearly marked and easy to use. Two more a third of the way down the third-row seatback.
Installing an infant seat
Easy. Cars.com found the infant seat installed easily and fit well.
Installing a convertible
The rear-facing convertible installed easily in the second row, and the front passenger had plenty of legroom.
An A in the second row, where Cars.com removed the head restraint before the convertible fit well, and a B in the third, where the fixed head restraint pushed it off the seatback. Cars.com notes that with a rear-facing seat in the second row in front of it, there is practically no third-row legroom.
Check your vehicle manual before removing or adjusting a head restraint: not every restraint is designed to come out. Your car seat manual says what the seat needs from the vehicle seat behind it.
Boosters and the buckle-yourself years
Cars.com removed the head restraint and graded the second-row booster A, with buckles on tall stable stalks that should be easy for kids to grasp and use. The third row is a C: Cars.com struggled to get the booster flush because of the fixed head restraints, and the buckles sink into the cushions and are held in by straps, making them tricky for small hands to find and use independently. With a rear-facing seat in the second row ahead of the booster, Cars.com notes there is practically no third-row legroom.
The third row
The step-in is tall, so those with shorter legs might need help. The GT-Line's power second-row seat took nine seconds in Cars.com's test to move out of the way, and the resulting opening is small. There is also a small pass-through between the captain's chairs.
Three car seats across
No, not in the captain's-chair configuration Cars.com tested. Our three-across guide covers which vehicles do, and the narrowest seat combinations by published width.
Strollers we carry
These are strollers we carry, with their folded dimensions so you can check them against your own load floor.
| Stroller | Folded (L x W x H) | Price |
|---|---|---|
| Silver Cross Reef 2 Multi-Terrain Modular Stroller | 19.0" x 23.5" x 29.0" | from $1,199.99 |
| Nuna SWIV Stroller | 14.5" x 21.0" x 30.5" | $1,000.00 |
| Maxi-Cosi Fame Modular Stroller | 30.93" x 24.51" x 15.76" | $999.99 |
| Nuna TRVL DUBL Stroller | 19.75" x 30.5" x 27.7" | $950.00 |
| Romer Tura Stroller | 38.5" x 18.5" x 22.25" | $849.99 |
| Veer Switch&Roll Stroller | 15.0" x 25.5" x 36.0" (with seat) | $949.00 |
| Nuna MIXX Next Stroller | 27.5" x 23.6" x 19.0" | $900.00 |
| UPPAbaby Cruz V3 Stroller | 17.0" x 22.5" x 32.4" (with seat attached) | $899.99 |
Folded dimensions: manufacturer spec. Prices update automatically from our store.
Compare every stroller side by side.
Kia EV9 car seat questions
Does the 2025 Kia EV9 fit three car seats across?
No. The 2025 Kia EV9 does not fit three car seats across, in the captain's-chair configuration Cars.com tested, according to Cars.com's Car Seat Check.
Where are the LATCH anchors in the 2025 Kia EV9?
Second row: two sets, partially exposed. Third row: two sets, exposed.
Will a rear-facing car seat fit in the 2025 Kia EV9 without moving the front seat forward?
The rear-facing convertible installed easily in the second row, and the front passenger had plenty of legroom.
Can kids buckle themselves in the 2025 Kia EV9?
Cars.com removed the head restraint and graded the second-row booster A, with buckles on tall stable stalks that should be easy for kids to grasp and use. The third row is a C: Cars.com struggled to get the booster flush because of the fixed head restraints, and the buckles sink into the cushions and are held in by straps, making them tricky for small hands to find and use independently. With a rear-facing seat in the second row ahead of the booster, Cars.com notes there is practically no third-row legroom.
What is the narrowest car seat to shortlist for the 2025 Kia EV9?
Of the seats we carry, the Romer Juni Infant Car Seat with Versa Base is the narrowest by published width, at 16.9 inches.
More car seat help: Car Seat Safety Guide · All buying guides · Car seat finder · Compare car seats · How long to stay rear-facing · LATCH versus the seat belt · Booster readiness · NHTSA's Car Seats and Booster Seats page
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Educational information only. This guide is for general education. It is not professional, medical, legal, or safety advice, and it does not create any advisory or professional relationship between you and SugarBabies. You are responsible for the safe selection, installation, and use of any car seat.
How a car seat fits and installs depends on your exact vehicle (its model year, trim, and seating configuration) and your exact car seat model. The instructions that came with your car seat and your vehicle owner’s manual always control. If anything in this article ever conflicts with those instructions, or with current guidance from the National Highway Traffic Safety Administration (NHTSA), follow the manufacturer instructions, your vehicle manual, and NHTSA, not this article.
Vehicle fit grades are compiled from third-party sources, including independent car seat fit testing by Cars.com editors, among them a certified car seat technician. Product dimensions are the manufacturer’s published figures for the items we stock, and are the widest published measurement where more than one is given. Any combination total is simple arithmetic with no allowance for shell overlap, and is a shortlist to check rather than a guarantee of fit. Specifications, model years, configurations, pricing and stock change, and we do not guarantee the accuracy, completeness, or current status of any of it. This article does not replace a hands-on check of your own installation against those instructions.
Which seats we list on a given vehicle is our own editorial choice from the seats we carry, informed by those published dimensions and those third-party fit findings. It is not the result of testing that seat in that vehicle, and we have not verified any combination of seats side by side in any vehicle on this page. Buckle position, belt-path interference between neighboring seats and recline angle all affect real-world fit and none of them are captured by a width measurement.
To the fullest extent permitted by applicable law, we disclaim all warranties, express or implied, including the implied warranties of merchantability and fitness for a particular purpose, and SugarBabies and its owners, employees, and affiliates are not liable for any direct, indirect, incidental, or consequential injury, loss, or damage arising from the use of or reliance on this article. Nothing in this disclaimer limits any liability that cannot be limited under Washington law. Some products we recommend and link to are sold by SugarBabies, and we make money when you buy them.
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