The Mazda3, part of Mazda's second generation (2009-2013), is a compact car celebrated for its engaging driving dynamics, sporty styling, and overall quality. Designed with Mazda's 'Nagare' aesthetic and the 'Jinba Ittai' philosophy, it offers a responsive and enjoyable experience for consumers seeking a stylish and capable vehicle. Available in various trims, including the high-performance Mazdaspeed3, this model has garnered recognition, including Car and Driver's 10Best lists and consistent Top Safety Pick awards from the IIHS, underscoring its blend of performance, safety, and design appeal. This comprehensive factory service manual provides detailed information for the maintenance, repair, and diagnosis of the Mazda3 (BK chassis, 2nd Generation). Covering all trim levels and global markets, the manual encompasses extensive sections on powertrain, chassis, electrical systems, body, and interior components. It includes step-by-step repair procedures, diagnostic troubleshooting guides, detailed specifications, wiring diagrams, and information on special tools, making it an essential resource for owners, technicians, and mechanics aiming to maintain and service this vehicle effectively.