Striking designs like this A5 coupe have helped Audi find sales growth around the world. Photo credit: Audi

German auto giant Volkswagen (NASDAQOTH:VLKAY) is set on an ambitious goal: Becoming the world's largest-selling automaker by 2018. VW's luxury brand Audi, and Audi's massive profits, are a big part of that plan -- and Audi has set its sights on overtaking the current luxury-car leader, BMW (NASDAQOTH:BAMXF).

BMW is a fierce competitor, with top-notch products and a superb brand. Can Audi close the gap? In this video, Fool contributor John Rosevear checks in on Audi's latest sales figures -- and sees some trends that should have BMW's leaders worried.

Fool contributor John Rosevear has no position in any stocks mentioned. You can connect with him on Twitter at @jrosevearThe Motley Fool recommends BMW. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.