ISO 26262 focuses on functional safety―ensuring that automotive components do what they’re supposed to do, precisely when they’re supposed to do it. It provides an automotive-specific approach for determining risk classes known as ASILs.
AEC-Q100 (established by the Automotive Electronics Council) focuses on reliability, specifically stress testing for integrated circuits in automotive applications.
The Society of Automotive Engineers (SAE) has long provided standards for rating automotive horsepower and now defines best practices for cybersecurity in SAE J3061. The SAE is actively involved in defining vehicle autonomy levels and, more recently, developing automotive testing standards.
MISRA (Motor Industry Reliability Association) guidelines focus on security―defining the process for developing safe, secure, and portable software code in vehicle control systems.