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Can you fit 3 carseats in a Subaru Crosstrek?

Yes, you can fit three car seats across the rear bench of many Subaru Crosstrek models, but success depends on the model year, trim, and the specific car seats you use.


Across a compact, five-seat rear seat, a three-across arrangement is possible in some configurations, yet it can be tight and may require particular seat brands or slim designs. This article outlines the factors that affect fit, practical configurations that have worked for Crosstrek owners, and safety steps to verify a secure installation.


Key factors that influence three-across seating in the Crosstrek


The Crosstrek’s rear bench is designed for two outer positions with LATCH anchors and a center position that typically relies on the vehicle belt. Width, belt routing, and the seating geometry of different car seats determine whether three across is feasible. Always consult both the Crosstrek owner’s manual and each car-seat manual, and consider a Certified Child Passenger Safety Technician (CPST) if you’re unsure.


Variations by year and trim


Interior tolerances and seat upholstery can shift slightly between model years and trims, which may affect fit. Verify the presence of LATCH on the outer positions and confirm how the center position is belt-secured in your specific Crosstrek.


Common three-across configurations that have worked in a Crosstrek


Below are configurations reported by families and technicians as workable in many Crosstrek models. Real-world fit depends on the exact seats you own, so test them in your vehicle before relying on any setup.



  • Two narrow convertible seats on the outer positions using LATCH, with a belt-secured belt-positioning booster in the center.

  • One outer position with a rear-facing infant seat and the opposite outer position with a forward-facing convertible seat, with a belt-secured center booster or narrow seat in the middle.

  • Two outer positions with narrow infant seats or a combination of rear-facing and forward-facing seats, and a center belt-positioned booster if needed.


In all cases, ensure the seats do not interfere with each other’s harnesses or belt paths, and confirm that three-across does not compromise airbag deployment or occupant space. If in doubt, seek guidance from a CPST.


Practical steps to test-fit three across in your Crosstrek


Before attempting a three-across setup, plan to test-fit with your actual seats in your exact vehicle to confirm a secure installation.



  • Measure the effective width of each car seat and compare it to the Crosstrek’s rear bench width, accounting for belt paths and any armrests.

  • Identify which positions have LATCH anchors (outer seats) and whether the center relies on a 3-point belt that can accommodate a booster or belt-secured seat.

  • Do a dry-fit: place each seat in its intended position without tightening to check for interference and easy buckle access.

  • Install the seats and check harness tightness, strap routing, and proper anchoring according to each seat’s manual.

  • Have another adult help verify all seats are secure and that there’s no risky slack or pinch points.


After testing, document which configuration works best and use that setup consistently. If any seat cannot be installed securely, reconfigure or consult a CPST for alternatives.


Summary


Three-across car-seat installations in a Subaru Crosstrek are feasible in certain configurations, but they depend on seat width, the specific model year, trim, and the types of seats used. Outer seating positions typically offer LATCH anchors, while the center position relies on a belt path, which can limit which seats fit in the middle. Always follow the car seat and vehicle manuals, and seek professional guidance if you’re unsure. Testing with your exact seats in your Crosstrek is the best way to ensure a safe, secure setup for three kids.

Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.