I just bought an '18 in October and have 13,000km on it already... We also have a '12, '14, '16 in the family. All have been exceptional.
My dad's 2012 has 300K on it and hasn't done anything but the belt/battery/brakes/tires and plugs twice.
Change the transmission fluid regularly along with the filter and you will be golden. With 73K miles I would do it right away and then again after say 10K miles and the go every 50K miles from there. You can get a Dorman pan with a drain plug on Amazon and Dorman also makes the dipstick tool if you want dead accurate measurements. 62TE is the transmission paired with the PentaStar 3.6L V6.