Rimac began collaborating with various automakers early on, providing engineering services and technology solutions for electric vehicle projects. These initial partnerships helped to establish Rimac's reputation as a reliable and innovative technology supplier.

Rimac supplied advanced battery technology to Koenigsegg for use in its hybrid and electric hypercars. This collaboration demonstrated Rimac's ability to meet the demanding requirements of high-performance vehicles.

Rimac collaborated with Aston Martin on the Valkyrie hypercar, providing battery and powertrain solutions. This partnership showcased Rimac's expertise in developing advanced electric vehicle technologies for leading automotive brands.

Rimac continues to expand its role as a technology supplier, partnering with more automakers to develop and provide cutting-edge electric vehicle technologies. This includes battery systems, electric powertrains, and complete engineering solutions.