This manual provides comprehensive information for the 2010 Mazda 3 equipped with the 2.0 L I4 Diesel engine, chassis code BL. Known for its sporty design and engaging driving dynamics, the Mazda 3 has consistently been a strong contender in the compact car segment, praised for its athletic stance and the "Zoom-Zoom" driving philosophy. This particular diesel variant offers enhanced fuel efficiency and torque, making it an attractive option for drivers prioritizing economy and extended range. The Mazda 3 has a history of quality engineering and has earned numerous accolades for its styling and performance. This workshop service repair manual is designed to assist professional automotive technicians and advanced DIY enthusiasts in maintaining and repairing the 2010 Mazda 3. It covers a vast array of systems, including detailed procedures for the 2.0L MZR-CD diesel engine, manual transmission, braking system, suspension, steering, electrical systems, and HVAC. The manual includes routine maintenance schedules, step-by-step troubleshooting and diagnostic guides, component repair instructions, and technical specifications. With over 1000 pages of English-language content, this text-searchable and printable resource is an indispensable tool for ensuring the optimal performance and longevity of your vehicle.