The 49-year-old Krueger, who has headed BMW since May, was speaking to reporters at the company’s exhibit at the show when he apparently felt dizzy and collapsed. He was helped away by two bodyguards.
In a brief statement BMW said the CEO had a dizzy spell and that he had not been feeling well in the morning after returning from a trip abroad.
A company spokesman at the auto show a short while later said Krueger was feeling better but that he had cancelled all his meetings scheduled for Tuesday and returned to his home.
The IAA auto show opened Tuesday for a press tour. Alongside Volkswagen and Daimler, BMW has a prime place in the huge exhibition, where more than 1,000 exhibitors are showing their latest models.
In early trade in Frankfurt Tuesday, BMW shares were up 1.03 percent to 86.22 euros.