Why does the Audi A6 have a higher fuel efficiency compared to other luxury sedans?

I've been looking into purchasing a luxury sedan and I noticed that the Audi A6 has a much higher fuel efficiency than its competitors. I'm curious as to what makes it stand out in terms of fuel efficiency and how it's achieved.

The Audi A6 also utilizes advanced engine technology, such as stop-start systems and direct injection, to optimize fuel consumption. By automatically turning off the engine when the car is stopped and precisely delivering fuel to the engine, the car is able to consistently achieve a higher fuel efficiency.

The Audi A6 is equipped with a mild hybrid system, which allows the car to use regenerative braking to store energy and assist the engine during acceleration. This not only increases fuel efficiency but also reduces emissions. As a proud owner of an Audi A6, I can attest to the noticeable difference in fuel consumption compared to other luxury sedans I've owned in the past.

The lightweight design of the Audi A6 contributes to its superior fuel efficiency. The car's body is made with a mix of aluminum, steel, and magnesium which reduces its overall weight, making it easier for the engine to propel and ultimately use less fuel.