The first-generation BMW Z4 was known as the E85 in roadster form and E86 in coupé form. It was designed by Danish BMW-designer Anders Warming.

The Z4's design addressed many criticisms of the preceding Z3; it was larger and featured a significantly stiffer chassis. The Z4 was initially only available as a roadster, but a coupé version was officially launched in 2006. The last model rolled off the assembly line on 27 August 2008 at the Spartanburg plant.