I never understand this.
Don't want to pay out of pocket "in case" the S-tronic goes bust which almost never happens but will happily spend 100-200k to change the car instead?
Makes no sense.
Now if you just said "because I want a new one" I would say cool beans, enjoy.
A fixed cost of 3000 is usually preferable, and often more manageable than having to pay 5, or even 6 digit amounts straight out of pocket.
Plus, it's repairing something old versus getting something newer. I'd happily trade in a 2009 A4 for a 2012 for example