One of the most common errors when it comes to these products is that parents sometimes do not secure them properly. When they are not secured down properly, they are significantly less safe. Sometimes, even if the parents know how to secure them down into the car, grandparents might run into trouble when the design is a little complicated. There were many options on the market that have simple clicking designs with big buttons that even those that do not have any experience with these products will be able to figure out. Another feature that will help users determine if it is mounted right is a bubble level that is mounted to the side of the unit. If the bubble is within the designated lines, that means that it is mounted in the proper place.