Teardown analysis held at the Hiroshima Kokusai Gakuin University Automotive Junior College (Photographed by reporter, the same hereinafter)

  This report will introduce the teardown analysis of the BMW 320i M Sport sponsored by the Hiroshima Industrial Promotion Organization, focusing on the drivetrain and intake/exhaust subsystems that work with the 2.0-liter inline four-cylinder gasoline engine described in the previous report.

Vehicle overview

  The BMW 3 Series underwent a full redesign in October 2018. The 320i used for this teardown analysis features a detuned 330i engine. In Germany, BMW’s home location, the model is sold as a low-priced version, but for the Japanese market, the model combines the engine with a high-grade interior and equipment and is sold as a Japan-exclusive model. The model is offered in three trim levels: Standard, SE, and M Sport, but all perform identically. The M Sport, aside from differences in cosmetic parts, differs only in a suspension system with grade-specific settings, a “sport” automatic transmission featuring the ability to change shift timing, and non-linear geared “variable sport” steering (the greater the steering wheel is turned, the quicker the vehicle turns). Major vehicle specs are as follows.

Teardown analysis vehicle: BMW 320i M Sport Japan Edition

Related reports:
BMW 320i Teardown: B48 2.0L inline 4-cylinder engine （Mar. 2020）