Although I like Japanese cars like Honda, Mazda and Toyota, at your price you can’t buy one that’s any good or has low mileage.
I would look at a low mileage (relatively) Ford taurus or Mercury Sable. You may also find a Ford Crown Victoria or Mercury Grand Marquis.
These cars have very low resale value but are mechanically quite good.
Have mechanic check it over before you buy.
Good Luck!