In 1999, he was nominated for a Screen Actors Guild award for his work in the film Life Is Beautiful. The category was Outstanding Performance by a Cast in a Theatrical Motion Picture.
He was prone to bouts of depression and eventually became an alcoholic.
His breakthrough role in his native Germany was Die Halbstarken.
His funeral on March 9, 2003 was attended by over 800 relations, friends, colleagues and friends.
He appeared in over sixty films during his acting career which spanned from 1952 until 2002. His first film was Die Spur führt nach Berlin while his last was Planet B: Detective Lovelorn und die Rache des Pharao.
In 1981, he failed as host of the dubious Astro-Show on German television, which was cancelled after only five shows. In the show, the popular astrologer Elizabeth Tessier had been at his side.
During the filming of The Magnificent Seven, he accidently shot himself with a blank in his left thigh. This left him with a large bruise for several weeks.
He was the youngest of the seven main stars of The Magnificent Seven.
Despite the fact that he was German, he was a cast as a Mexican, Chico, in The Magnificent Seven.
His wife, Myriam Bru, gave up acting shortly after their marriage in 1958.
He is buried in Friedhof Heerstrasse, Berlin, Germany.
He landed his first stage role in 1948 at the age of fifteen in a Berlin theater version of the German children's classic Emil and the Detectives.
His father was a shoemaker who was killed during World War II.
He was called the James Dean of German Cinema because of the many rebellious teenagers he played during the late 1950s.
He dropped out of school so he could take acting lessons.
He died in intensive care of pneumonia while recovering from a broken thighbone.
He was married to Myriam Bru from December 7, 1958 until his death on March 3, 2003. They had two children, Christopher Buchholz (b. 1962) and Beatrice Buchholz.
Horst Buchholz: "We actors are like whores. For a good film I'm the world's biggest whore."