The Mazda3, specifically the 2005 model year from the first generation (BK chassis), is a compact car renowned for its sporty driving dynamics and agile handling, reflecting Mazda's philosophy. Built on a shared platform, this model offered a stylish design and a practical interior, making it a strong contender in its segment against competitors like the Honda Civic and Toyota Corolla. Available with either a 2.0L or a more powerful 2.3L engine, the Mazda3 provided an engaging driving experience, further enhanced by its availability with a 5-speed manual or a 4-speed automatic transmission. Its commitment to driver engagement, combined with a solid safety rating, including a 5-star front crash test rating, underscored its appeal. This comprehensive Workshop Service Repair Manual is designed for professional technicians and experienced DIYers, providing in-depth guidance for the diagnosis, repair, and maintenance of the 2005 Mazda3. It covers all major vehicle systems, including the powertrain, drivetrain, chassis, and electrical systems, offering detailed procedures for everything from routine maintenance and fluid changes to complex component overhauls and troubleshooting. With extensive technical specifications, wiring diagrams, and diagnostic flowcharts, this manual is an essential resource for ensuring the longevity and optimal performance of your Mazda3, empowering users with the knowledge needed for accurate and effective vehicle care.