We put our 2015 GMC Terrain SLT 2.4l AWD through the ringer on a 6,000 mile trip out west and back and never experience even a hick up. Actually with it coming up on lease ending 45,000 mile date the end of the year my wife says it was the best and most like car she has ever owned. It has only returned for free maintenence and never had anything fail or never had to go in for warranty work or recalls like everyone else seems to have.
I was watching the oil level on the dip stick as climbing the Rocky Mountain range at 80-90 mph pace but it had no problems doing 5,000+ rpms for miles on end. With two adults and a dog and the cargo space full along with a pair of bicycles hanging off the back, we were not close to working the 4-cylinder and AWD. The Active Noise Cancelation helps combined with the long wheelbase to make 10-12 hour days a breeze. Comfortable seats too!
Enjoy your new ride!