What is the most fuel-efficient engine option for the Audi A6?

I am looking to upgrade my current vehicle and am interested in purchasing an Audi A6. However, I am concerned about the fuel efficiency of the engine options available. What is the best engine option for achieving high fuel efficiency in the Audi A6?

The most fuel efficient engine option for the Audi A6 is the 2.0-liter 4-cylinder engine, which delivers up to 335 horsepower and 369 lb-ft of torque while also achieving an EPA-estimated 25 combined MPG. This engine option provides a good balance between performance and fuel efficiency.

If fuel efficiency is your top priority, I recommend going with the Audi A6 plug-in hybrid option. It combines a 2.0-liter 4-cylinder engine with an electric motor, providing a total system output of 362 horsepower while achieving an EPA-estimated 27 combined MPG. You can also charge the car at home for even greater fuel savings.

For the best fuel efficiency in the Audi A6, I suggest opting for the TDI clean diesel engine. While it may have slightly less horsepower than the other engine options, it delivers an impressive 325 lb-ft of torque while achieving an EPA-estimated 29 combined MPG. Diesel fuel is also generally more affordable than premium gasoline.