So you made a bad choice in what you bought on the used market and bought two vehicles that were abused heavily before you got them and found four fords that were babied all their lives before you found them. It happens.
Toyota can blow it out their butts. The "advisors" told you that because they have spent too many hours in the presence of attorneys. If cars were really only designed to last 7 years, our economy would crumble overnight. That isn't directed at you at all, though, and it's not a personal attack on your comment. I have a beef with manufacturing in this day that things used to be designed by engineers. Today they're designed by attorneys and accountants.Just an added point, in my mechanical engineering program in college, the manufacturing advisors who worked with Toyota told us that it is common industry practice to engineer a car to last 7 years. Anything more than 7 years should be considered a bonus.