Gas or diesel for towing a camper: which should you buy?

Start with the loaded camper weight, not the brochure dry weight. Then check payload. Many camper buyers run out of payload before they run out of tow rating. A diesel is a good fit when the camper is heavy, the trips are long, the terrain is steep, or you tow often. It gives stronger low-rpm pulling power and more confidence on grades. But it also brings higher maintenance cost, more expensive repairs, and emissions-system parts on newer trucks. A gas truck can be the better buy for lighter campers, shorter trips, and occasional towing. It may rev higher and use more fuel while towing, but it is usually simpler and cheaper to own. Do the math with the door-jamb payload sticker, trailer tongue or pin weight, passengers, cargo, hitch weight, and your real travel pattern. The right answer is the truck that stays inside its ratings without making ownership harder than it needs to be.