What is the difference between Audi A4 and A6 engines?

I am considering purchasing an Audi but I am confused about the different engine options in the A4 and A6 models. Can someone explain the differences and which engine would be better for everyday use?

The Audi A4 comes with a 2.0-liter turbocharged four-cylinder engine while the A6 has a 3.0-liter V6 engine. The main difference is power and performance, with the A6 having a higher horsepower and torque. For everyday use, the A4 engine should suffice unless you need more power for frequent highway driving or towing.