Modern vehicles are becoming increasingly connected, making cybersecurity testing essential for ensuring safety, security, and regulatory compliance. This presentation will provide an overview of automotive cybersecurity testing practices, including functional testing, vulnerability scanning, fuzz testing, and penetration testing. It will explain how cybersecurity testing supports compliance with industry standards and regulations such as ISO/SAE 21434 and UNECE R155. The session will also discuss risk-based test planning, key testing environments and practical approaches to validating cybersecurity controls across vehicle systems, helping manufacturers and suppliers improve vehicle resilience against evolving cyber threats.