The Rambler American came into being because of economics; the economics of the average American, who, in the mid-fifties was suffering as the result of a major recession. No auto-maker had a small car, not even AMC, because the push had been for "longer, lower, wider", but longer lower and wider cost money that the buying public didn't have.

Luckily, AMC had retained the tooling from its 1955 model Rambler. This was ever so slightly modified and then used for the basis of the "new" Rambler American.

Thus, the 1955 Nash Rambler was returned to production as the "New 100" Wheelbase 1958 Rambler American". It had minor styling revisions form the 55 model, which had not been a compact at the time, but by dint of the growth of US car, was now right in the buyer's sweet spot.