best car seat 4-8 years

For 4–8-year-olds in Australia, you’re choosing between an extended harnessed seat (Type G) or a high-back booster with the adult belt—both certified to AS/NZS 1754. Look for a tall back, solid side impact protection, clear shoulder-height markers, and a proper top tether; ISOFIX is mainly for 0–4 seats, while boosters typically use the seatbelt (some have anchors just to stop wobble). A great “best” seat is the one that fits your child and your car, keeps the belt geometry spot-on, and installs without swearing. Avoid second-hand unless you know its history, age, and there’s no crash damage. If your kid’s shoulders creep past the marker, or the belt sits on the neck, it’s time to change. When in doubt, get a fit-check with an authorised installer—cheap insurance for small humans.