(The above bold type added by me, not Kevin)I played around with the cruise control levels 1 through 4 today on a 150+ mile trip I did this morning and I have to say that the #4 Dynamic setting makes a huge difference in how the non-turbo 2.5L responds. It (meaning #4 or the 2.5 in general?) seemed to be just fine (more than adequate) in merging and passing on a freeway.
Perhaps, I'm misreading this, but are you saying #1 through #4 made a difference in merging and passing? I thought it only affected how fast you sped up to acquire a lead car, or how fast it resumed the set speed after a slow lead car disappeared (changed lanes).