15. Audi TT (Used)

The Audi TT stands out for its sleek, modern design and turbocharged performance, making it a favorite among sporty coupes.
As a used option under $30,000, the TT offers luxury touches and agile handling that’s hard to match at this price point.
Its distinctive looks and refined interior create an upscale driving experience.
Autotrader calls the Audi TT a smart used-car buy for those who want both style and substance on a budget.