This manual covers the Mazda 121, a subcompact car produced in 1998. Known for its affordability, fuel efficiency, and compact size ideal for urban environments, the Mazda 121 was designed with practicality and ease of use in mind. This particular model, chassis code DB3 (JDM), features a 1.5-liter inline 4-cylinder engine (B5-ME) with SOHC 16-valve configuration, delivering approximately 88-99 horsepower and 120-130 Nm of torque, managed by an Electronic Fuel Injection system. It was available with either a 5-speed manual or a 4-speed automatic transmission. The vehicle's engineering emphasizes reliability and cost-effectiveness, reflecting Mazda's heritage of producing dependable and accessible transportation.

This comprehensive workshop and service manual provides detailed information for the maintenance and repair of the 1998 Mazda 121. It covers essential areas including powertrain diagnostics and repair, transmission service for both manual and automatic types, chassis systems such as suspension and braking, and the 12V electrical system. The manual also includes procedures for bodywork, scheduled maintenance, component removal and installation, and troubleshooting guides for common issues. Technical specifications, torque values, and diagnostic trouble codes are provided to assist owners, mechanics, and technicians in keeping the vehicle in optimal condition. The content is presented in English, with an estimated 600-800 pages of detailed instructions and diagrams.