When IIHS began its booster seat ratings in 2008, most models failed to consistently provide good belt fit — the main purpose of a booster. This year, all new models evaluated by the Institute provide good or acceptable fit for typical 4 to 8 year-olds in most cars, minivans or SUVs.
Out of 23 new models evaluated, 20 earn the highest rating of BEST BET, meaning they are likely to provide good fit for a 4- to 8-year-old child in almost any car, minivan or SUV. Another three models are rated GOOD BETs, meaning they provide acceptable fit in most vehicles. There are no new models in the Not Recommended category, nor are there any with the Check Fit designation, which identifies seats that may work for some children in some vehicles.