The Mazda Mazdaspeed3, a second-generation compact performance hatchback produced from 2008 to 2010 (model years 2008-2010), represents a fusion of practicality and exhilarating performance. Built on the BL chassis code and powered by the potent MZR DISI Turbo (LF-VD) engine, this model is renowned for its direct-injected turbocharged power, sport-tuned suspension, and standard helical limited-slip differential, delivering an engaging driving experience. Its design emphasizes both aerodynamic efficiency and aggressive styling, making it a standout in the sport compact segment, appealing to enthusiasts seeking a practical yet highly capable daily driver that can trace its lineage to Mazda's long history of producing dynamic and rewarding vehicles. This comprehensive workshop service repair manual provides detailed information for the Mazda Mazdaspeed3 (BL chassis code, 2008-2010 model years). It covers all essential aspects for professional technicians and advanced DIY enthusiasts, including in-depth powertrain, chassis, and electrical system diagnostics and repair, as well as body and interior maintenance. The manual details scheduled maintenance procedures, fluid specifications, and addresses common known issues, offering guidance on everything from routine oil changes to complex component overhauls and calibration. With over 1500 pages of technical data, troubleshooting guides, electrical schematics, and torque specifications, this English-language, searchable resource is an indispensable tool for maintaining and repairing this high-performance vehicle.