I have the harsh 1-2 upshift on my 07 MKX. The dealer reprogrammed it twice & it still does. Said they can't recreate the problem. Yet, I can get it to happen every day on the first cold upshift. Its fine after the first shift. If I pull out slowly & let it shift without giving it much gas, it shifts fairly smooth & will be fine after that. Very frustrating for a car that cost so much. Otherwise though, its been great.