A lot of people will reply to this with "I own a Volkswagen and I've never had any problems!". The reality is that there is random statistical variation with these things but overall VW has a very poor track record with reliability.
You need to get some CGA advice. I understood that the CGA allowed consumers to reject a product if it is 'substantially' faulty but, given the value of a car, you need to get proper qualified advice before going down this route.
As for better alternatives, I really like Hyundai and Kia product. I have personally owned Mazdas for the last few years with no significant problems and I have always got the impression that Mazda NZ and the dealer would be receptive if there ever were any issues.