^I think he's pulling your leg mate! They built mk1's in SA up until recently but i doubt VW would swallow the expense of all the tooling etc over there to build the mk6 when the 7 isn't too far off. 
I did think it sounded a bit odd, and i seemed to know more about The GTI than he did last time i spoke with him
I quote, Cousin - 'it's a good job your thinking about the mk6 as the mk5 was a massive flop for the gti brand, the new one is a much better car'
Me - 'Don't you mean the mk4 was the flop and the 5 was the revival car'
Cousin - 'No its the 6 thats the all new design'
Me - 'Ok mate

'