In the 1960s, KraussMaffei built several examples of the ML 4000 C′C′ diesel-hydraulic locomotive for demonstration and testing on American railroads.

Co-operation between companies was already well established, with Wegmann supplying tank turrets, among other things.

KraussMaffei's locomotive production and defense division Krauss-Maffei Wegmann were bought by Siemens AG.

In 2000 Krauss-Maffei Kunststofftechnik GmbH took over the KrausMaffei trademarks following dissolution of Mannesmann Group.

[3][4] In November 2018 KraussMaffei was the victim of a ransomware attack, leading to severe drawdown in the production.

[6] At the same time, production in China was stepped up: In addition, the ChemChina majority holding Qingdao Tianhua Institute of Chemistry Engineering (THY) took over a ChemChina plant in Sanming, which builds injection molding machines for the Chinese market.

[7][8] KraussMaffei will cut 510 jobs worldwide by 2023, most of them in Germany, as the company reported in early 2020.