The BMW 5 Series is an executive car manufactured and marketed by BMW since 1972, succeeding the New Class Sedans, and currently in its seventh generation. The 5 Series was initially available as a sedan, with a wagon/estate body style (marketed as "Touring") added in 1991 and a 5-door fastback configuration (marketed as "Gran Turismo") available from 2009 to 2017. Each successive generation carries a distinct internal E- designation. The first generation of 5 Series was powered by naturally aspirated four-cylinder and six-cylinder petrol engines. Following generations have been powered by four-cylinder, six-cylinder, V8 and V10 engines that are either naturally aspirated or turbocharged. Since 1982, diesel engines have been included in the 5 Series range.