Hi, I’ve played forza 3 for a while and now since the DLCs were removed from xbox live I have an interesting question. I don’t have the VIP car pack but if I manage to buy a Lamborgini Gallardo S or the Ferrari F430 Scuderia from the auction house, will they still be transfered over to my Forza 4 profile when I import my Forza 3 one?
P.S. Sorry if this was already answered 
Unfortunately if you don’t have the VIP car pack, you won’t be able to buy either of those cars from the AH, sorry
This exact approach worked for me with the DeLorean - I was able to buy the DeLorean in the Auction House even though I do not have the DLC pack for this car and even though the car is (annoyingly) pad-locked (undrivable) in FM3 - it did transfer into my FM4 garge!
I cannot say for certain this’ll work in your case with the VIP cars - unfortunatly, I did not get the chance to try this with the VIP cars - I never saw any on Auction before I started FM4 (you do klnow that you do have to do all of this before you begin FM4 for the first time, right?); is worth trying!
I am also not sure if this will work but in theory it should. A similar to your case gave me the idea. I know all about how to transfer cars over to FM4, that is not an issue. I also did not find any VIP cars on the Auction House, so I think SpeedDemon is right but I can’t be sure. Of course it’s worth the try but for now no VIP cars are beeing sold. Topic is still opened.