We looked at a used Highlander and drove it a year ago. It wasn't set up for towing and was not a higher end one. I then drove a used VW V-6 Touareg and really liked it. It is rated to tow about 7,700 pounds, has an eight-speed automatic. We hooked it up to our 3,500 boat and towed it to the lake about 75 miles each way and the vehicle didn't even breath hard there and back. Towed the boat as if it wasn't there and had no trouble pulling the boat and trailer out of the lake up a pretty steep ramp. On top of that, it registered 14 mpg on the console, which I know can be a bit off but I was impressed with the towing capability of this vehicle. If you can find a good used gas one around, you might consider taking a look at it to see what you think.