 The 2017 new 4 Runner I recently purchased is by far the least comfortable vehicle I have ever owned. The driver's seat  has very little padding. I am constantly adjusting the seat position try to get comfortable. When I get home at the end of the day my back is so stiff with frequent spasms. It is the worst seat I have ever had. There is a distinct vibration when accelerating that can felt in the steering column, the seats and wheels. On the highway when driving over 60 mph there is a frequent  vibration in the from the front end. It is a very rough ride on both highway and non-highway driving.     This is the first Toyota I have ever owned and I will never purchased another!   I was hoping that after a couple of weeks it would get better, but it has only gotten worse.