2012 Terrain, 2.4 and AWD.
Mainly tows a 4x8 Harbor Freight trailer, usually with 1 or 2 motorcycles or the kids' 2 quads. At max the trailer, dirt bike, dual sport, and misc crap comes in around 1000 lbs. Doesn't care it's back there. Might take a 1.5 mpg hit on the freeway. Actually seems to get better mileage on the freeway with the trailer + kids quads then it does with no trailer. Maybe because they are low and fill in the dead air space behind the vehicle. Dunno.
I also often tow 2 different 6x10 trailers. My dad has one, and we have one at work. The wind resistance is enormous. Empty they are 750-850 lbs, loaded I probably haven't exceeded 1300 lbs. But even empty they are taxing on the 4 banger. Definitely would not take on the freeway. Up to 45 mph, no problem. 55-60 mph, very noticable, but doable with no headwind. My trips with them are usually decently short (16-17 miles from work).
Our minivan (2015 town and country) has a ton of power, bht again, higher the speed, the more noticable the enclosed trailers are. Made a bomn run from up north with the one 6x10 once, running 80+ mph. Would expect 21-23 mph from the van doing that, got 10.5 mpg. It wanted to run 4th gear, ~4000 rpm, instead of 6th. Major drag. Same trailer/speeds drags the old 3/4 ton Scottsdale down from about 12 mpg to 11 mpg. The 1 ton camper van dwarfs the trailer profile, it goes from about 11 mpg to about 11 mpg. It's gutless, but doesn't even notice the trailer.
Point is? Weight matters for stopping, handling, acceleration, safety, etc. But profile can have a monumental effect on how well it goes down the road. A parachute is really light, but has huge drag.
My truck hates this trailer. Modern diesel trucks will yank it up mountain passes at speeds that can earn "performance awards".