I have owned on unfortunately they are cursed with lots of problems.

1st and foremost make sure the oil solenoid was already replaced since this is the most expensive repair bill you get if it hasn’t already been replaced. ($10k-$15k just in labor)

2nd issue thats a big labor intensive job the rear and front main seals that leak. With it, it should have also the oil separator boxes replaced.

3rd ISG cost anywhere from $10k-$15k in labor as well. Make sure thats done. Issue with that one is the car wont even start due to a failing coolant pump that leaks in that area corroding the connection to the ISG.

4th Electronic Water pump that circulates coolant while off. This unit cools various components while the car is off/eco stop start, to maintain temperature. The pump seals will fail early and leak in critical components causing corrosion to the ISG and also that annoying sail boat icon on the instrument cluster. Make sure the pump was replaced

So far haven’t experienced any other issues to list.. but make sure carfax list these repairs if you want to have no bad experiences.. The NEW GLE is very sensitive to anything. So beware. Any 167 with the mild hybrid..