This manual covers the 2004 BMW 3 Series 325i, chassis code E46, equipped with the M54B25 engine. Known for its reputation as "The Ultimate Driving Machine," the 325i exemplifies balanced handling and refined performance, making it a benchmark in the compact executive sedan segment. This generation, produced from 2001-2005, offers a compelling blend of luxury, sportiness, and engineering quality, appealing to driving enthusiasts and those seeking a reliable, premium vehicle. Its inline-6, naturally aspirated 2.5-liter engine, producing 184 horsepower, provides spirited performance, further enhanced by its sophisticated suspension and braking systems.

This comprehensive Factory Service Repair Manual provides detailed information essential for the maintenance and repair of your BMW 325i. It covers all aspects of the vehicle, including complete engine mechanicals, transmission systems, suspension, steering, brakes, and extensive electrical system diagnostics. You will find all necessary maintenance procedures, step-by-step repair instructions, wiring diagrams, and critical technical specifications such as torque values and clearances. This manual is designed to empower owners, DIY mechanics, and professional technicians with the factory-level knowledge required to keep the vehicle in optimal condition and ensure its longevity.