How does the Audi A5 improve fuel efficiency?

I'm planning on purchasing an Audi A5 and want to understand how it is efficient in terms of fuel consumption. Can anyone explain this to me?

The Audi A5 comes equipped with an innovative engine technology that helps optimize fuel efficiency. The improved fuel efficiency can also be attributed to the car's lightweight design and aerodynamic properties. Overall, the A5 is a great option for those looking for a fuel-efficient vehicle.

I own an Audi A5 and I can say that it definitely helps in saving on fuel costs. The car has a start-stop system, which shuts off the engine when the vehicle is stationary, reducing fuel consumption. Additionally, the car's cylinder shut-off technology also helps improve fuel efficiency.