Can you fit three car seats in a Subaru?
Yes — you can fit three car seats across the back seat in some Subaru models, but it depends on the exact model, year, and the sizes of the seats you’re using.
This article explores which Subarus are most likely to accommodate three-across configurations, what seat types (infant seats, convertibles, boosters) mean for fit, and how to test and install safely. It offers model-by-model guidance, practical tips, and safety reminders to help families plan if three-across seating is essential for their vehicle choice.
Model range and three-across feasibility
Rear-seat width and seating configuration determine feasibility. Here are models commonly cited by families attempting three-across setups:
- Subaru Ascent — A three-row SUV with a wide second row. In trims that use a full-width 3-passenger bench, three car seats across can be feasible, especially with narrow infant or convertible seats. If the second row uses captain’s chairs, the width for three across is reduced to two. Always verify the specific bench configuration and LATCH availability for your exact year and trim.
- Subaru Outback — A midsize wagon with a broad rear bench. Three-across configurations are possible in some setups, typically with a combination of two smaller seats and a booster, or by using a narrow infant seat in the center. Center seat belt installations may be required, and LATCH is usually available on the outer positions depending on year/trim.
- Subaru Legacy — A mid-size sedan with a relatively wide rear bench. Three-across can be achievable with two compact seats and a booster, though the center position may rely on a seat belt rather than LATCH, and seat width can still be tight.
- Subaru Forester — A compact SUV with a narrower rear seat. Three across is more challenging and not guaranteed; some combinations may work with slim infant seats and boosters, but it’s not reliably feasible in most configurations.
Conclusion: Three-across compatibility is highly dependent on seat widths, belt paths, and the presence or absence of center-seat LATCH anchors. Always test-fit your exact seats in your specific vehicle configuration and consult a certified Child Passenger Safety Technician (CPST) if you’re unsure.
Guidance for safe three-seat installations
To maximize safety when pursuing a three-across setup, follow these practical steps and precautions:
- Plan the layout by seat type and vehicle seating arrangement. Identify which seats will use LATCH and which will rely on seat belts.
- Install the outer seats first using LATCH where available, then fit the center seat using the appropriate belt path. Ensure each seat is aligned correctly with the vehicle’s belt paths and anchors.
- Check for interference between seats and ensure there is no twisting of harnesses or seat belts. The center seat may require a belt-install with a locking mechanism or a belt with a locking clip depending on the seat and vehicle.
- Test for movement after installation. A properly installed car seat should move less than an inch side-to-side or front-to-back at the belt path. Re-tighten as needed.
- Verify recline angles and harness slots according to each seat’s manual. Ensure collars, chest clips, and harness heights are correct for each child’s size and age.
- Have a certified CPST inspect the setup if you’re unsure about fit, belt paths, or anchor usage. An expert eye can confirm correct installation and provide hands-on guidance.
Conclusion: Three-across arrangements require careful planning, precise installation, and ongoing checks. If any seat cannot be secured safely without compromising another seat, do not force the fit.
Model-by-model considerations
Subaru Ascent
The Ascent’s interior is purposefully roomy, reflecting its three-row design. In models with a three-passenger second-row bench, three seats across can be achievable, especially when using two compact seats and a booster in the outer positions or a slim infant seat on the center. If your trim opts for second-row captain’s chairs, you’ll typically have only two usable back-seat positions, eliminating the three-across option. Always confirm the exact bench type, anchor availability, and seat belt configurations for your year and trim, and test-fit all seats before relying on daily use.
Subaru Outback
The Outback’s wide rear bench provides potential for three-across layouts, particularly with a narrow infant or convertible seat plus a booster. The center position often requires a belt-install rather than LATCH, depending on year and trim, so plan accordingly. If you anticipate needing three-across regularly, bring the seats to the dealership or a CPST to verify fit in your exact vehicle configuration.
Subaru Legacy
As a mid-size sedan, the Legacy offers a respectable rear width, which can accommodate three seats in certain configurations (e.g., two compact seats and a booster). The center seat frequently relies on a seat belt install, with limited or no LATCH in many years. Given the tight tolerances in sedan back seats, verify seat widths and belt routes in your specific model before assuming three-across is possible.
Subaru Forester
The Forester’s smaller rear cabin makes three-across seating less reliable. Some families report success with highly narrow infant seats and boosters, but this setup is not guaranteed and may vary significantly by year and trim. If three-across is a priority, test-fit early in the car-choosing process and consider larger Subaru options like the Outback or Ascent if feasible.
Summary
Three car seats across the back seat can be feasible in several Subaru models, particularly the Ascent and, with careful selection of seats, in the Outback and Legacy. The Forester tends to be more restrictive due to its narrower rear seating. Key factors include seat width, belt paths, and whether the center position uses a belt or LATCH. Always test-fit your exact seats in your exact vehicle configuration, follow each seat’s installation manual, and seek a CPST’s guidance to ensure a safe and secure setup. If three-across cannot be achieved safely, consider alternative arrangements such as a different model, a combination of two seats plus a booster in the back while maintaining proper rear-facing or forward-facing orientation, and ensuring each child’s safety requirements are met.
