I drive the exact same year model Dodge Iddee although it is a dually. about 1998 the odometer broke at 204 thousand miles. since then it has made two trips to California and back. I would guess ' tecumseh' (the name of my truck) has about 500 thousand miles + and I am almost embarrassed to say how little repair I have made to the beast over it's almost 20 year life span. sadly dodge changed the design and the only thing now available as a replacement get just about half the fuel milage.
When tecumseh was brand new it likely got better fuel milage than your Toyota (unless of course if you had one of those 6 banger toyota in which case it got twice the Toyota gas milage).
we use to tell a very politically incorrect joke about Dodge truck which I will not repeat here.