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Big price cuts for A6 and A7 as Audi prepares for 3.0 TDI Biturbo release – and facelifted E-Class and 5 Series models Audi has hacked up to $9000 from the price of its A6 sedan and up to $5000 from the price of its A7 Sportback prior to the release of its range-topping new 3.0 TDI Biturbo engine in both models next month. The German brand’s bristling 3.0-litre twin-turbo V6 diesel engine makes its simultaneous Australian debut in the A6 and A7 on February 10, and produces no less than 230kW of power and 650Nm of torque. That’s 50kW and 70Nm more than Audi’s single-turbo V6 diesel, which produces an extra 80Nm of torque as part of a 2013 model upgrade for both the A6 and A7, which now offer 180kW and 580Nm. Audi’s new flagship diesel engine also out-performs the 3.0 TFSI V6 petrol engine that now produces 228kW/440Nm in both the MY13 A6 and A7 (up 8kW), as well as the 230kW/630Nm twin-turbo inline six that powers BMW’s 535d sedan ($121,500) and the 195kW/620Nm 3.0-litr...