So far the vehicle has run smoothly up until this morning. Driving at slow speeds in traffic (25-35mph) as soon as I lifted off the gas it felt like the vehicle was slightly braking or towing something. Idling also felt rougher. Later tonight when it started to get worse at slow speeds I turned on the performence pages to see what gear it was in. At slow speeds (25-30mph) it very quickly went up to 6th gear (on its own, i dont use paddle shifters) and was slow to down shift. Getting onto the highway it wasn't smooth like it normaly is. I changed from sport and street mode but no difference. Getting off highway it stayed in 8th gear for the next 2 miles of 35-45mph driving. What is likely the issue? Has 1,100 miles on it, took it easy first 500, and since have done some quick accelerations but havent even broken a 6 sec 0-60.