I had our new I4 Terrain out on the Blue Ridge Parkway over the weekend. So I dropped it in manual, eco mode off, and had some fun with the Terrain. I was surprised how much fun I was having going through the gears and pushing the handling a little bit. Although the Terrain is no sports car, it does stick to the road pretty well with the Michelins. After about an hour of fun and annoying my wife and daughter, I went back to auto. Auto behaved well up and down the hills without a lot of shifting or lugging. Still very happy with our Terrain and the I4.