Volkswagen Group's premium brand Audi is expanding its ultra strategy with 11 new A4, A5 and A6 variants with a new two-liter TDI turbodiesel engine in 100kW/136hp, 120kW/163hp or 140kW/190hp tune emitting 104-119g of CO2/km depending on model. A new seven-speed twin clutch transmission has also been launched.