1985 Mercedes Cup

The 1985 Mercedes Cup, was a men's tennis tournament played on outdoor clay courts and held at the Tennis Club Weissenhof in Stuttgart, West Germany that was part of the 1985 Grand Prix circuit. It was the eighth edition of the tournament and was held from 9 September until 15 September 1985. First-seeded Ivan Lendl won the singles title.

Singles
Ivan Lendl defeated 🇺🇸 Brad Gilbert, 6–4, 6–0
 * It was Lendl's 7th singles title of the year and the 49th of his career.

Doubles
Ivan Lendl / Tomáš Šmíd defeated 🇺🇸 Andy Kohlberg / 🇧🇷 João Soares, 3–6, 6–4, 6–2