I’m going to be blunt here
If you’re looking at a new car and don’t like some aspect of it, don’t buy the car. It will not change.
It is sold as is, not how it might be a few months later. You should have said “The seats are uncomfortable. Show me another car.” If you had a cramp down your entire leg, that means the car you just looked at is unacceptable for you and it’s time to look at other cars.
The same thing applies to new shoes, at least for me. I’ve noticed that the best shoes are the ones that are comfortable right from the start, when I try them on in the shoe store. With the others, it was always like flipping a coin. Some of them did break in and were eventually comfortable, while others were always stiff. But shoes are a small purchase versus a new car