7 series could be called as the most luxury series of BMW. These BMW flagship vehicles are only manufactured with sedan body. Production of 7 series begins in 1977 and during all these yeaars there were six generations released (first generation from 1977 until 1986, second from 1986 to 1994, third from 1994 to 2001, fourth between 2002 and 2008, fifth from 2008 to 2015, sixth is being produced from 2015). 7 series could be called as an exception when talking about the most powerful models of every series, because there were no model created in 7 series (M7 has not been developed).