We received a Cosco car seat as a gift from a relative for my son, we have put it in my mom's car, and have had nothing but problems with it. The latch part that goes between my son's legs is extremely hard to buckle into the shoulder harnesses, I LITERALLY have to stand and push down with all my might on each buckle to get them to snap in!!! There is hardly any padding to protect his head should we be in a crash, and it WILL NOT stay secure (it wobbles from side to side tremendously - so much so, I have to sit in the back seat with him to hold it steady!!).
I went to pull the strap tight and then pulled on each belt at his shoulders and it pulled completely out. I repeated this several times and made sure that the belt had locked into place, it still came out. I pulled the top of the harness to simulate me slamming on the brakes and it pulled right out! My 3yr old child could have been ejected from my car. I couldn't believe that I had been driving around like that unknowingly! How many other parents don't know this about their Cosco car seat! I've just sent them another email and purchased another car seat. I hope that they will look further into this situation. We will not use this seat again. No damage, I caught this soon enough, thank God!