The ML320 (W163), produced from 1998 to 2005, represents a pioneering entry into the luxury mid-size SUV segment. Renowned for its typical build quality and excellent Noise, Vibration, and Harshness (NVH) control, the ML320 offered a blend of premium comfort and genuine off-road capability, supported by its standard 4MATIC all-wheel-drive system. This generation, initially manufactured in Tuscaloosa, Alabama, was recognized as SUV of the Year for 1998 and aimed to compete with other luxury SUVs of its era. It featured a naturally aspirated 3.2L V6 gasoline engine, with an optional turbocharged diesel variant available in some markets, paired with a 5-speed automatic transmission.

This comprehensive factory service manual, presented in English and containing over 1500 pages, covers all gasoline and diesel variants, automatic transmissions, and body styles of the ML320 (W163) produced between 1998 and 2005. It provides detailed procedures for scheduled maintenance, fluid services, and component replacement, along with in-depth diagnostic guides and troubleshooting for powertrain, chassis, electrical, and body systems. The manual is an essential resource for owners, mechanics, and technicians seeking to maintain, repair, and understand the complex systems of this luxury SUV, ensuring its optimal performance and longevity.