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The Porsche Cayenne SUV has been a massive profit generator for Porsche -- and for the VW Group. Photo credit: Porsche

Volkswagen Group (NASDAQOTH:VLKAY) reported a third-quarter pre-tax profit of 2.78 billion euros on Wednesday, or $3.82 billion dollars. That was a 20% increase over VW's earnings in the third quarter of last year, and it was a number that came in well ahead of analyst estimates.

A big contributor to those profits was the famed sports-car brand Porsche, which VW absorbed into its business last year. As Motley Fool contributor John Rosevear explains in this short video, Porsche accounts for just a tiny portion of the giant VW Group's global sales -- but an outsized portion of the German auto giant's profits.

Fool contributor John Rosevear has no position in any stocks mentioned. You can connect with him on Twitter at @jrosevearThe Motley Fool has no position in any of the stocks mentioned. 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.