Used Cars OKC. Today there are a lot of used car dealerships in OKC. Wasn't very long ago when you couldn't find used cars in OKC. Just a few decades ago used cars were considered junk like an old refrigerator! Today we are financing 35,000 to 210,000 mile used cars in OKC like they are brand new. They run so much longer if you will just change the struts, control arms, shocks, rotate the tires and keep them aligned!