Automotive Fuel and Emissions Control emphasizes the troubleshooting and diagnostic aspects of emissions control systems and automotive fuel. We cover all factors related to this field, aligning with the latest NATEF tasks. This book caters to the educational needs of students worldwide, especially those studying automotive fuels and emissions control systems. We also focus on meeting the requirements of professional technicians, addressing the need for improved training standards. Our book aims to equip budding technicians with the necessary skills for effective diagnostics and procedures, fulfilling both basic and advanced needs.