Living in the western U.S., I can't imagine towing horse trailers with less than a half ton pick-up equipped with a towing package to cool the transmission, custom hitch and a V-8 engine. Having said that, if you limited the Santa Fe to a single horse trialer of no more than 1,000 pounds and the trailer was equipped with its own brakes you might make do. If you are in hilly country it will add to the stress on the rather small V-6 engine. At the very least assure that it has a transmission cooler for towing. Best of luck...