Car seats A car seat is one of the most important safety devices that you will ever buy for your child so it is worth choosing very carefully. The golden rule though is that the car seat that you choose must fit safely in your car or indeed any car that you plan to use. Over 80% of car seats are incorrectly fitted so this is still by far the biggest factor in child safety. Read our reviews to help make your decision. Our reviews are completely independent. We monitor all reviews, but we don't edit them, so you can always trust a Babyworld review.