Airshot, The Pinto issue was a big story in the early 80's. To be fair the Pinto's gas tank was in the same place and was the same design as the Mustang and other cars of the time. The top of the gas tank was the floor of the trunk, in a lot of those Ford and Mercury models.
The difference was that the Pinto was a much lighter and had a less strong bumper, than Mustang/ Comet/Cougar. Fairlane etc. If you hit something in a Pinto, the bumper bent and pushed the gas tank into the differential where it could be punctured. Leaking gasoline is real bad.
The pinto-unique design flaw was for the trans to suddenly pop into reverse. That did not plague other models.
The Explorer was a much newer scandal. I did not follow it closely, but Ford was compelled to address it.