Modern cars contain more and more safety-relevant features which require addressing safety aspects during all development phases: on the functional level, on the architectural level, during integration as well as throughout the verification. The workflow of designing safe and reliable automotive embedded systems start with appropriate requirements definitions. According to the automotive safety standard ISO 26262, functional as well as non-functional threats need to be addressed. Non-functional aspects of safe software include a sound and safe timing of the software. The right methods, tools and standards enable OEMs and suppliers developing and providing applications which meet their timing requirements and a high level of quality. We present with this paper some important aspects related to timing in automotive embedded systems as well as the major standards such as TIMMO and AUTOSAR.