This manual pertains to the Astra G, produced between 1998 and 2004. As an iconic Australian automotive brand, the Astra G was offered as a significant model in its lineup, often rebadging European platforms to serve the Australian market. This particular generation represents a key period in vehicle offerings, providing a reliable and well-engineered option for everyday transportation. The vehicle's design and components are thoroughly documented within this resource, reflecting the engineering quality and intended usage for a broad range of owners. This comprehensive service repair workshop manual is designed to be an invaluable resource for both do-it-yourself enthusiasts and professional mechanics. It covers every aspect of the Astra G, from engine mechanical and electrical systems to drivetrain, chassis, suspension, braking, and bodywork. The manual provides step-by-step instructions, detailed exploded diagrams, and essential technical specifications, ensuring clarity and efficiency in maintenance and repair tasks. Its scope includes troubleshooting common issues, performing periodic checks and adjustments, and detailed procedures for engine overhaul and transmission repair, making it an indispensable tool for maintaining vehicle operability and performance.