Volkswagen (VWAGY -0.47%) has made no bones about its ambition to be the world's new-car sales leader by 2018. To get there, it will have to lean heavily on its mainstay VW brand -- but sales of VWs have faltered lately.

In this video, Fool.com contributor John Rosevear looks at the latest sales numbers for VW from around the world -- and at the German auto giant's chances of passing General Motors (GM 1.98%) and Toyota (TM 0.69%) to take the auto sales crown.