This workshop service repair manual covers the Mercedes-Benz A-Class, chassis code W168, specifically the A190 variant from the 1st Generation. Produced between 1997 and 2004, this compact MPV/hatchback was Mercedes-Benz's entry into a new market segment, distinguished by its innovative 'sandwich' floor design. This engineering choice not only enhanced safety by allowing the engine and transmission to slide beneath the passenger cell in a frontal impact but also maximized interior space relative to its exterior dimensions. The A190 is powered by a 1.9-liter (1898 cc) inline 4-cylinder engine, the M166.990, producing 125 hp and 180 Nm of torque, typically paired with a 5-speed automatic transmission. Its unique packaging and safety innovations, including standard ABS and optional ESP, positioned it as a forward-thinking option in the competitive compact car market.

This comprehensive manual provides detailed information for the maintenance, repair, and troubleshooting of the Mercedes-Benz W168 A190. It covers all major systems, including the powertrain (engine mechanical, management, fuel, cooling, exhaust), transmission (automatic and manual), chassis and suspension (including its unique front suspension design), and the extensive electrical and electronic systems. The manual offers step-by-step procedures for routine maintenance tasks such as oil changes and fluid flushes, as well as in-depth guidance on component repair and rebuilds. It also includes diagnostic procedures, troubleshooting charts, and detailed wiring diagrams, making it an indispensable resource for DIY mechanics, independent repair shops, and technicians seeking to maintain the optimal performance and longevity of their W168 A-Class vehicle.