In 1953, I don't know, I would guess 15¢.
But by around 1958 or 1959 I remember 19.9¢ Sometimes, there were "gas wars" between competing gas stations on different corners of a main intersection, and I saw 17.9¢
By 1963 I was buying gas for the lawnmower or my go-cart or minibike and it was 20.9¢ or 21.9¢
When I started driving in 1969 it was around 26.9¢
When I went to college in 1971-72 it was 27.9¢ at home, 29.9¢ halfway there (in farmland) and 34.9¢ in the remote forested area of the college campus.
The published prices that I always see in historical articles, always list prices that are higher than I saw with my own eyes. They surely weren't for my area in the "midwest". Maybe for California.
My grandfather said he saw gas at 15 gallons for a dollar, and a few times as low as 18 gallons for a dollar. I assume this was in the late 1920s to early 1930s. He was driving since 1919.
I worked at a gas station in 1971. I remember the prices.