On some thread at one time there was an argument about the best selling car in the world. I believe it was between the Beetle and the Corolla and now there is more support of the Corolla's crown. Caranddriver.com's article:
The Golf recently passed the Beetle has VW's best selling automobile.
"Despite its huge sales, the Golf is still behind the all-time best-seller, the Toyota Corolla, which was launched in 1966 and has accounted for around 26 million sales." (The Golf has 21.5 million sales.)