I thought to share here my experience with a defect infant car seat a couple of weeks back. I took my toddler with me for a weekly grocery shopping on my car.
Everything was as usual and finished shopping as planned. However, when I came back to the car, I spotted a small wear and tear on the infant car seat cover and pad. It was quite a bit dirty and beaten as well. It was nothing serious but had my baby comfort level affected.
I was a bit frustrated that I did not notice it in the first place. However, I understood replacing it is a better option, so I drove back to the house with my baby. Luckily, I did not face any problems with the seat cover while driving.