What is the most fuel efficient Audi vehicle currently available?

I am looking to purchase a new car and want to prioritize fuel efficiency. Which Audi vehicle stands out in terms of fuel economy, and what should I consider before making a decision?

The Audi A3 Sportback e-tron has the best fuel efficiency among all Audi models, with a combined 86 MPGe. However, it comes with a higher price tag due to its plug-in hybrid technology. If you prioritize overall cost-savings in the long run, the Audi A4 ultra may be a better option as it has a respectable 32 MPG in the city and 45 MPG on the highway.

When considering fuel efficiency, it's important to also look at factors such as vehicle weight, aerodynamics, and tire pressure. These can greatly impact a car's fuel economy. Additionally, consider your personal habits and driving style. Do you frequently take short trips or do a lot of stop-and-go driving? These behaviors can also affect fuel efficiency.