I have 55k on my 2014 CTD. People say it is supposed to shift to neutral at a stop light, however, I have never felt that it did, until recently. Several times when starting out from a stop the engine will start to accelerate and then there is a jolt like I got rear ended. My dealer has been unable to replicate it, however, it is becoming more frequent. Now I am very careful to accelerate slowly to avoid the jolt. I have also noticed when the car downshifts it can be pretty abrupt. It's becoming annoying and I can't believe it is not bad for the transmission. I will be taking it back to the dealer soon. Should I ask for a flush? I know flushing is expensive and not recommended with normal driving at 55k. Is there a filter in our transmission? Could the fluid be low? There are no visible leaks.