You won't automatically get a replacement car, however the garage you're dealing with can 'make representation' on your behalf for one (possibly to MDL - or is that who you're dealing with?). VW customer care is shocking in my experience - go right to the most senior person in the department you're dealing with and argue your case. If they won't give you a replacement car, ask them to come and pick it up from your home/place of work (I've argued for both a replacement car and collection in the past, and gotten both of them, and outside the warranty period too - took ages though and blood pressure still hasn't recovered.....).