Entry seat height feels just a little lower on the JL, but the seat to steering wheel to pedals felt very close to the same. I'm comparing a 2015 Sahara to a 2018.
As of this morning I just built a 2019 Sahara with the standard 3.6L, waiting for the dealer to call back with final approval and options available to order.
With any new engine I like to change the oil earlier than the normal recommended interval, break-in oil as I like to call it, go ahead and crawl under there and get to know your new friend!
Greetings from MN, 2015 JKU Sahara owner, torn between a new JL, pick up the 2018 on the lot or order a 2019??? The struggle is real.
Edit - ordered a 2019 on Friday.