The A6 TDI Biturbo is the new flagship A6 ... There sits a 3.0-litre twin-turbo diesel V6, which Audi says is pretty much all new, producing 230kW of power and a stomach-lifting 650Nm of torque.

While Audi gave its A6 sedan some new and updated features last year, both stylistically and in terms of features, its rivals have been completely overhauled to stay at the head of the pack.

These 10 luxury sedans offer the perfect mix of performance, comfort, and advanced tech, making them top choices for your ...