The Z4 series replaced the Z3 in the early 2000s. The convertible, designed by Anders Warming, was presented in 1999 and marketed since 2002. Available with 4 and 6 cylinder engines with power from 150 to 343 horsepower, the Z4 convertible is still a coveted car by collectors today. After a makeover in 2006, a new generation was presented in 2009 in Detroit.