In an era defined by rapid transformation in the automotive sector, 'Automotive Design & Simulation Fundamentals' by Vikram Singh Sankhala serves as an essential guide for navigating the complexities of modern vehicle development. The book addresses the industry's shift towards electrification, autonomous driving, digital twins, and software-defined vehicles by providing a robust framework built upon foundational principles like System Dynamics & Modeling Principles and Human-Centered Design, while seamlessly integrating advanced methodologies such as AI-Driven Multiphysics Optimization and Digital Twin Implementation Layers. It delves into the core mechanics of vehicle systems, including powerplants, transmissions, chassis, suspension, steering, braking, dynamics, and electronics, laying a solid theoretical groundwork necessary for understanding contemporary automotive engineering. Building on this foundation, the book explores practical and emerging topics vital for today's professionals, from maintenance and diagnostics for conventional and alternative fuel vehicles to automotive safety standards and the latest advancements in autonomous vehicles, ADAS, and connected cars. A significant focus is placed on state-of-the-art tools and techniques, highlighting major simulation software suites like Siemens NX, Ansys, GT-SUITE, and CARLA, and detailing the critical integration of AI, machine learning, and digital twins in the design and simulation workflows. Furthermore, it covers sustainable and innovative manufacturing practices, including circular economy principles and the rise of software-defined vehicles, positioning the book as a forward-thinking resource designed to empower automotive engineers and designers to innovate, tackle complex challenges, and lead in the future of mobility.