2015 Golf Sportwagen R-Line 2.0 TDI 4MOTION  (Source: Autoblog)
Volkswagen is looking to improve fuel efficiency of its vehicles by 15% before the year 2020

All vehicle manufacturers are looking to improve efficiency across the board due to increasing stringent government requirements relating to fuel economy. Volkswagen is doing its part from a drivetrain perspective by developing a new Direkt-Schalt-Getriebe (DSG) transmission and revamped diesel (TDI) engines.
Volkswagen already makes available 6-speed and 7-speed DSG transmissions (the latter can be found in the U.S. market on the Jetta Hybrid). But 7-speeds just isn’t enough for the German automaker; Volkswagen AG CEO Martin Winterkorn says that his company is developing a new 10-speed version that will be used in its vehicles.
The move to 10-speeds will allow for improved fuel efficiency, and Winterkorn says that the transmission will be able to handle torque loads up to 369 lb-ft.
When it comes to engines, Volkswagen also has some new tricks up its sleeve. The company is putting the finishing touches on a new 2.0-liter four-cylinder TDI engine that produces a stout 236hp (the current version available to U.S. buyers makes 140hp and 236 lb-ft of torque). Winterkorn says that the new engine will be optional on the upcoming eighth generation Passat and will surely be made available on other Volkswagen- and Audi-branded vehicles.
And if that wasn’t enough, a new version of the 3.0-liter V6 TDI engine is on the way. While the current 3.0-liter TDI offered to U.S. customers produces 240hp and a whopping 428 lb-ft of torque, the updated engine will be available in two states of tune. The first will produce 218hp, while the second will produce 272hp. The former version will see fuel efficiency gains of up to 13 percent compared to the existing motor, while the latter will see its torque output increased to 442 lb-ft.
It should be noted that the current 3.0-liter TDI is already an incredibly fuel efficient engine, giving the midsize Audi A6 EPA ratings of 24 mpg city, 38 mpg highway, and 29 mpg combined.
It seems logical that Audi could replace the 3.0-liter TDI currently used in its lineup with the new, uprated 2.0-liter TDI and offer the new, high-output 3.0-liter TDI as a performance upgrade in the U.S. market.

Sources: Auto Car, Audi

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