The Ascent has a 5000lb towing capacity but being a mid-sized SUV brings challenges to towing heavy loads. Things like Braking Controllers, Hitches, Wiring, Load Leveling, Sway Control, Gas mileage, Turning Radius, etc.\n\nMy current problem is gas mileage. Unfettered I get a great 24 MPG highway on level land down in Florida but when I tow my 4600lb travel trailer I am getting 9.5MPG when I travel at 70MPH in cruise control.\n\nI have made some 12 x 900 mile trips now and the mileage is fairly consistent. I complained about it to my service guy but they said if there wasn't a code or warning there was nothing they could do. I tried changing to manual shifting but got no significant difference.