The Mitsubishi Sigma, a large sedan produced from 1990 to 1995, offers a blend of V6 engine power, refined styling, and a comfortable ride, positioning it as a competitive option in its segment. Built on Mitsubishi's global platform, this model was also known as the Diamante in North America, reflecting its international appeal. Available with 2.5L and 3.0L V6 engines, and either a 4-speed automatic or 5-speed manual transmission, the Sigma provided a range of powertrain options, with some models featuring All-Wheel Drive. Its engineering quality and focus on driver comfort made it a notable entry against contemporaries like the Toyota Camry and Honda Accord. This comprehensive workshop repair and service manual provides in-depth guidance for maintaining and repairing the Mitsubishi Sigma across all its models, engines, trims, and transmission types. Covering critical areas such as engine management, drivetrain, chassis, and electrical systems, the manual includes detailed procedures for maintenance, diagnostics, and repair, along with essential technical specifications and torque values. With hundreds of pages, clear illustrations, and step-by-step instructions, this resource is invaluable for owners, mechanics, and technicians aiming to ensure the longevity and optimal performance of their Sigma.