10 Best Narrow Car Seats 2025 in the United States

The Graco® TurboBooster® LX Backless Booster Seat is designed for big kids transitioning from harnessed seats to vehicle seat belts, supporting weights between 40-100 lbs and heights from 43-57 inches. The booster seat has a front-adjust LATCH system for easy and quick installation, ensuring it stays securely in place even when unoccupied. This feature can be especially helpful for parents who may find it challenging to constantly reinstall the seat.

It's also notable for its portability, weighing only 6 pounds, which makes it easy to move between vehicles if needed. Safety-wise, it includes Graco's ProtectPlus engineering, which provides robust crash protection from various angles, enhancing peace of mind for parents. Comfort features include an easy-to-clean cup holder and a hideaway storage compartment, keeping drinks and snacks conveniently within reach, while the removable and machine-washable seat pad makes maintenance straightforward.

On the downside, the seat lacks a harness system, which might be a concern for parents looking for additional security for children on the lighter end of the weight spectrum. Additionally, while the polyester material is durable, it might not offer the same level of comfort as other, more plush options. This backless booster seat is highly rated by customers, with a 4.8 out of 5 stars from over 27,000 reviews, indicating a high level of satisfaction. The Graco® TurboBooster® LX is efficient, user-friendly, and safe, making it a strong choice for families needing a reliable booster seat, though it may not be the best fit for extremely narrow car seats or those seeking a harnessed option.

The Graco Extend2Fit Convertible Baby Car Seat is a solid choice for parents looking for a narrow car seat that doesn’t compromise on safety or comfort. With a width of about 19.5 inches, it fits well in smaller vehicles or when you need to squeeze in multiple car seats. One of its standout features is the 4-position adjustable extension panel that provides up to 5 extra inches of legroom, allowing your child to stay rear-facing longer—up to 50 pounds—which is safer for babies. It accommodates children up to 65 pounds forward-facing, making it usable for several years as your child grows.

Installation uses the LATCH system, which is generally straightforward, though some parents might find the seat’s 25.5-pound weight a bit heavy to move around often. The no-rethread headrest and harness adjustment makes resizing quick and hassle-free, which adds convenience as your child grows. Safety is well-covered with Graco's ProtectPlus Engineering and a 5-point harness system, providing solid crash protection.

In terms of comfort, the seat uses durable polyester and imported cotton for padding, which feels soft and supportive. The multiple recline positions (10 in total) help keep your child comfortable on longer rides. One downside is the heavier weight compared to some other narrow car seats, and while the seat is compact, it’s on the taller side (23.5 inches), so very small cars might find it a tight fit vertically. This car seat is a dependable, well-rated option suited for parents who want a mix of safety, comfort, and extended rear-facing capability in a narrower design.

The Graco Tranzitions 3 in 1 Harness Booster Seat is a versatile and adaptable option that can accommodate children from toddlers to youths with a weight range of 22 to 100 pounds. It features a forward-facing harness, highback booster, and backless booster, making it a long-term investment for growing families.

The seat is relatively lightweight at 17.19 pounds, which is beneficial for portability and ease of installation using the seat belt method. It includes a no-rethread Simply Safe Adjust Harness System and an eight-position adjustable headrest, ensuring it can grow with your child comfortably.

Safety is a strong point, with the seat engineered to meet rigorous crash tests including frontal, side, rear, and rollover crashes, and it meets the US FMVSS 213 standards. The comfort features are well thought out, including machine-washable seat pads, body support, and harness covers, along with two cup holders for convenience. However, the seat is only compatible with forward-facing orientation and might not be suitable for newborns or smaller toddlers.