I bought my 2017 in April with warranty through end of May and 29K miles. Pre-purchase inspection showed possibly OFHG gasket leak, vibration in rear under acceleration (thought to be rear drive shaft u-joint), oil pan gasket leaking.
They ended up replacing the rear diff, oil pan gasket, driver's side seat bottom cover on dealer trip 1. OFHG is fine, was just residual from a previous oil filter change.
For trip 2, I had developed a brake grind/drag up front and got the front pads and rotors replaced due to corrosion.
Did well in my 1.5 months of warranty coverage!