The 5th generation BMW 3 Series is based on the E9X platform. The car pictured is a E90 chassis.
The E9X chassis was used from 2004-2013 when the F1X chassis was released.
When talking about a non-specific chassis, this generation is typically referred to as the E9X chassis since there are multiple chassis for this generation of 3 series, depending on the body style (E90/E91/E92/E93).
