After advice off anyone that's done this please,
How did you go about it?
We've just spoken to the dealer and explained its now come to the hand it back or replacement car stage as I'm not prepared to keep being messed about by AudiUk with excuse after excuse over brake squeak.
Hi, after a total of 5 times of being at the garage since i bought it new, when i asked for a refund or swap i was told "Yes it's possible, but we're a very long way from that right now". I asked if he had ever swapped a customers car, and he said "No". The electrical issue was my main problem, 'tho the brake squeel drove me nuts as well. It seemed to me that they could not fix the electrical problem so i decided life's too short (and luckily i can afford to take the hit on price).
What really p****d me off was when i asked for the tax disc back after i'd sold it. I know it's only a hundred or so quid, but it was the principal - and what followed confirmed to me that i did the right thing....
I was told i'd have the disc back and could claim the refund when my private plate was back. Cut a long one short, when the time came, he reneged on that (despite showing the car on their website for 5k more than they paid me - as i expected). I complained to the guy who owns the franchise and to Audi UK, as it was a matter of principal not money. Again, to save boring you, i eventually got the disc, but both Audi and the dealership were arragant beyond belief. They clearly sell more than enough cars and only pay lip service to caring about their customers. Given that i usually have 3 or more cars and change one each year or so, they have probably cost themselves, but they won't be losing any sleep i'm sure!
So if i had to go to that much agro just to get a tax disc back, i don't rate my chances on having got a new car out of them!
The other reason i know i made the right decision was that they insisted on taking the car back before month-end so the price didn't drop. They put it on their website but without photos or details and it wasn't on the forecourt (i drive past regularly). It's just gone on Pistonheads (with the stated mileage 700 under the actual) and that's 5 or 6 weeks after they took the car in - so it's taken them all that time to fix the problem (assuming it is actually fixed).
Having said all of the above, i'm sure many of the mass manufacturers (and large dealerships) have the same attitude, but it's the worst experience i've had with a car. Re. the OP i'm not suggesting a replacement car shouldn't be persued, but be prepared for the long haul.
Cheers
Nick