The Astra, generation G (Mk4), built on the GM Delta platform, represents a significant offering in the family car segment for the years 1998 through 2000. Available in a wide array of body styles including Hatchback, Saloon, Estate, Coupe, and Convertible, this model was engineered to provide a practical and reliable transportation solution for diverse needs. It offered a broad spectrum of petrol and diesel engine variants, catering to varying performance and economy requirements, and was designed with a focus on user-friendliness and robust engineering, making it a strong competitor in its market class. This comprehensive Service and Repair Manual in English provides in-depth coverage for all Astra Mk4 (G) models from 1998 to 2000, encompassing all body styles and engine types. It serves as an essential resource for DIY car owners and independent repair shops, detailing routine maintenance, complex repair procedures, and diagnostic information across all major vehicle systems, including engine mechanicals, fuel, ignition, transmissions (manual and automatic), brakes, suspension, steering, and electrical systems. The manual features step-by-step instructions, clear diagrams, and troubleshooting guides to facilitate efficient maintenance and repair, ultimately helping users save on service costs.