"This step reinforces our successful partnership and is a signal of trust in the strategy and future potential of our company," he added.
Daimler has long worked with Beijing Automotive Group Co. Ltd. (BAIC) in China and has previously said it was possible that BAIC could purchase a stake in its capital.
The two companies have been partners in the production of Daimler vehicles in China and Daimler owns a nearly 10 per cent stake in BAIC Motor, a listed BAIC subsidiary.
However last year, the owner of Chinese carmaker Geely, Li Shufu, unexpectedly bought a near 10 per cent stake in Daimler, surprising executives at the German carmaker.
Geely owns Volvo Cars, the luxury Swedish carmaker which it has helped turn around to make record sales as it produces more SUVs.
The investment by BAIC puts it behind Geely, with 9.69 of Daimler's shares, and the Kuwaiti sovereign wealth fund at around 7 per cent.
The Renault-Nissan carmaking alliance had previously been Daimler's third largest shareholder.
While Daimler announced last year together with BAIC that they plan to invest 1.5 billion euros (USD 1.68 billion) in an assembly plant for the next generation of Mercedes-Benz electric vehicles, the German carmaker has also moved forward on the electric front with Geely.
In March, Daimler and Geely unveiled plans to manufacture in China the next generation of electric Smart cars, a Daimler brand of subcompact vehicles.