10 Best Car Seat For 4 Year Olds 2025 in the United States

The Graco Extend2Fit Convertible Car Seat is designed to grow with your child, making it a good choice for 4-year-olds who still need a secure harness system. It offers both rear-facing and forward-facing options, which is great since rear-facing use is safer for younger children and the seat supports rear-facing up to 50 pounds — higher than many seats. For older toddlers, it converts to forward-facing with a 5-point harness and can hold children up to 65 pounds. One standout feature is the adjustable extension panel that gives extra legroom, helping your child stay comfortable on longer rides.

The no-rethread headrest and harness make adjustments easy as your child grows, so you don’t have to fuss with complicated straps. The seat installs using the LATCH system, which is common and generally straightforward, though the seat itself is on the heavier side at around 19 pounds, making it less convenient to move frequently between vehicles. Safety is a priority here, with Graco’s ProtectPlus Engineering that provides solid crash protection. The materials used are durable and comfortable, with a soft cotton-like cover. The seat also offers multiple reclining positions to keep your child comfortable.

It is important to note that car seats have expiration dates (usually around 6 years), so be sure to check that before purchasing or using a seat. This seat is a strong pick for parents wanting a versatile, safe, and comfortable option for their 4-year-old that can last through several growth stages.

The Graco Extend2Fit Kenzie 2-in-1 Convertible Car Seat is designed to accommodate children from infancy up to toddler years. It supports a weight range of 4-50 pounds in the rear-facing position and 22-65 pounds when forward-facing, making it a versatile option for growing children. The car seat features a robust steel construction and meets US FMVSS 213 crash test standards, ensuring a high level of safety.

Its Graco ProtectPlus Engineering includes advanced side-impact testing and a 5-point harness system for added security. The no-rethread headrest and harness adjust easily to fit your child as they grow, and the harness storage pockets provide convenience for parents when placing their child in the seat. Comfort is also a priority with up to 5 inches of additional legroom for rear-facing positions and 10 reclining options.

The compact size (21.5” depth x 19.5” width x 23.5” height) and lightweight design (19.25 pounds) make it relatively easy to handle and install. The InRight LATCH system simplifies installation with a one-second attachment feature and an audible click to confirm secure installation. Additionally, the car seat is fully recyclable, which is a plus for environmentally conscious families. However, some users might find the size a bit bulky for smaller vehicles, and the weight might be a concern for frequent transfers between cars. Nevertheless, the Graco Extend2Fit Kenzie stands out as a reliable and comfortable car seat option for your growing child.

The Graco Tranzitions 3-in-1 Harness Booster Car Seat is a versatile choice for parents of 4-year-olds, as it adapts from a forward-facing harness seat to highback and then backless booster modes. This means it can safely accommodate children weighing from 26.5 up to 100 pounds and up to 57 inches tall, covering a wide range of growth stages. The 5-point harness provides solid security for younger kids, and the No-Rethread Simply Safe Adjust harness system makes it easy to raise the headrest and harness together with just one hand, which is convenient for busy parents. Installation via LATCH is straightforward, and the seat’s lightweight design makes it portable for active families.

Comfort is addressed with 9 adjustable headrest positions and machine-washable materials, helping keep the seat cozy and clean. On the downside, the minimum weight for booster modes increased to 40 pounds, which might limit use of the booster function for smaller kids. Also, the seat is forward-facing only, so it’s not suitable for rear-facing use, which is important for younger toddlers. Weighing 15 pounds, it may be a bit bulky for some users.

This seat serves as a practical and reliable option for parents who want a single car seat solution that grows with their child from toddler to youth, especially if they prioritize ease of adjustment and safety features.