What is the best affordable car seat for a grandparents’ car?

Best affordable pick for a grandparents’ car: Cosco Scenera Next, if the child fits its height/weight limits. It’s inexpensive, very light, simple enough for occasional use, and easy to move between cars—exactly what many grandparents need.

If you want something that lasts longer or is easier to install securely, step up to the Graco Extend2Fit. It usually costs more and is bulkier, but it has higher limits and is a better long-term seat for toddlers and preschoolers.

Quick buying advice: choose based on the child’s current age, weight, height, and whether they still need rear-facing. For grandparents, the “best” seat is the one they can install correctly every time, so a slightly pricier seat with easier installation may be worth it.