I bought a 2013 new and now have 145,000 miles on it and have throughly enjoyed owning and driving this vehicle. I have had no major problems. I replaced front struts at 95,000 and that's it. I do change transmission fluids at 40,000 which I believe has kept it going. My goal is to reach 200,000 miles before considering another purchase and it will probably be another Enclave.
Good luck and Enjoy your ride.