I acquired my 2015 500L last month with 9k miles on the tach. Having driven her 1000 miles since, I'm baffled by the automatic transmission. 1st and 2nd gears upshift [censored] near redline, especially when cold. Yes, Margaret, I'm not flooring it...no matter how gently I accelerate she won't upshift till 5-6k rpm. I've tried massaging the peddle to force an upshift, but no such luck. I've resorted to manual mode for most of my city driving as a result. The dealer has the car and they say they cannot replicate it. Even so, the are reflashing the trans software so that it can relearn it's shift points based upon my driving. Anyone else with this issue?