For me, the seats are some of the most comfortable things I have ever driven in. For my boyfriend it is the roughest ride he ever had not counting me. My guess is that his extra weight causes a rougher ride both for him and the feel of the vehicle. I say this because the ride is rarely bad when I drive alone. But there are many more jolts with him or heavy load in the car and some bumps feel a lot worse. So there may be something to my theory.