Крис Младенов Audi A6 C6 2.7 TDI Problems and Owner's Guide The Audi A6 C6 2.7 TDI is the little brother of the 3.0 TDI, and it often gets overlooked. But does it deserve to? You get six cylinders, a smooth, quiet engine, slightly better fuel economy and that ... 2.7 TDI Audi Complete guide V6 TDI Dec 23, 2025