This is my 3rd Wrangler. My first 2 wranglers had the 4.0 in them. I think the 3.8 has a little more pep and the MPG seem a little better than my other jeeps(17 vs 19-21). The 4.0 seemed better on the low rpm end. Also, I can't hear the 3.8L so it's not as easy to shift smoothly. Not sure why they went from the bulletproof 4.0 to a motor that performs marginally better, if at all... My only other complaint is why not put some BF Goodie All Terrains on out of the factory. The Goodyears are pitiful. They have worked so hard to put out a rugged vehicle, but then put street tires on it. It won't be our last Jeep Wrangler. Lots of reviews on here from multiple wrangler owners. :)
Seem a little larger than the older ones.
Larger motor or go back to 4.0. Should come from the factory with decent All Terrain tires.