Maybe some of you car experts can give your opinion on this. One of my bucket list vehicles was a 2 door Jeep Wrangler. It was time to retire my 8 year old Ford F150. So, being 42 and not getting any younger, I pulled the trigger. Got a brand new 2018 model at a good deal since it was almost the last of that model year on the lot. It's the 2.0 turbo with the 8 speed automatic transmission. I love the vehicle and I hate it. It's going into the dealership tomorrow for the 2nd time in a week. Things started off with a vibration in my drivetrain? I'd be coasting to a stop with my foot off the gas and I get a vibration like a very rough idle up until the vehicle was stopped. I've owned a fair amount of automatic transmissions but never encountered this. Then, it would vibrate in any gear above 3 when I was less than 2000 or 2200 RPM whether coasting or accelerrating. It's kind of like how a tranny feels when you are trying to step on the gas hard when in too high gear at too low an rpm but I'm not. That kind of shudder. But, it's doing it at RPMs far above where that should happen. Then today, I'm in sixth gear (of 8), running about 2000rpm, and I couldn't even get the vehicle to accelerate. I got on the gas pretty good too. I was on my way home from the office and a couple of miles form the house on the highway when that happened. After that, even the low gears felt really sluggish when accelerating with that same vibration. All sorts of vibration, hesitation, you name it. It wasn't a good 20 mile drive overall. I'll also mention that the thing doesn't appear to shift correctly. It always seems to perpetually be in too high a gear. If I don't use the manual shift option, which I normally do, it will be in 7th gear at 40mph. It was doing some stuff on my way home from work on Friday and I managed to get one of the dealer service people to ride with me and confirm it doesn't feel right. BUT... it did this last Friday as well, I had another service guy confirm it wasn't right, it went in last Monday for service, and then they tell me they couldn't find anything. Ugh. It's not a constant thing. I will be ok a day, and then the next day is another story. Today was really bad. So, I ask the knowledgeable car folk here..... what the hell could possibly be wrong with my vehicle? The first service guy who rode with me mentioned differential as a possibility. But, I'm also reading it could be torque converter, or a sensor someplace. This is a vehicle with 2000 miles on it and this sucks to deal with. I just went through hell with a cross country move, fixing/selling a house, a job change and this was a gift to myself after doing all of that.