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Audi and BMW have announced plans for diversifying their diesel offerings in the United States.

Audi's U.S. chief Scott Keogh said during the 2013 New York Auto Show the A6, A7 and Q5 will receive diesel engines for the 2014 model year. Ludwig Willisch, BMW's chief executive for North America, mentioned diesel engines will be available for almost the entire lineup in the next five years. As a reminder, BMW introduced the 328d in New York this week.

Keogh said approximately 50 percent of all A3s sold in United States come with a diesel engine and about 36 percent Q7 units are diesels. He added 15 percent of their sedans also feature a diesel.

Based on a BMW North America leaked slide, the wagon version of the 3-Series will get a diesel engine in the second half of the year. The 5-Series (most likely facelifted version) will be offered in a more frugal version in the third quarter. In the first half of 2014 the 7-Series and X3 will also receive a diesel engine.

BMW's reasoning for this move is based on the success of the diesel X5 since every fourth unit sold has a diesel engine. They believe once gasoline prices will go up, every third X5 will be a diesel.

Gallery: Audi and BMW planning more diesels in United States

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