I got my car last Tuesday. I have 800 miles on it, about 50/50 highway city I would say. Maybe a bit more on the highway/country road side. 65/35?
Anyhoo. At around 150-300 mi I had some shuddering. It seems to have gotten better as I haven't had it happen again as often. Just once the other day but it was just lumpy all around that was weird. Didn't happen after that.
I usually just drive in D
I've putted around town for a short amount of time in S and played with the shifty buttons including downshifting to slow down for a short while too
1965 Mustang Coupe 289 4spd
2003 Land Rover Discovery II SE
2013 Lincoln MKZ Hybrid