What are the differences between the Audi A6's engines?

I've heard that there are multiple engine options available for the Audi A6. Can you explain the pros and cons of each one?

The Audi A6 can come with either a 2.0-liter turbocharged engine or a 3.0-liter supercharged V6 engine. The 2.0-liter is more fuel-efficient and has quicker acceleration, while the 3.0-liter offers more power and a smoother ride.

You should also consider the Audi A6's diesel option, which may have slightly less horsepower but significantly better fuel economy. This is especially important if you do a lot of long-distance driving.