We have a 2009 Subaru Forester. It is 4 cyl automatic. We have had NO problems at all. We took the 550 teardrop to Lake Sabrina at over 8,000 feet west of Bishop, CA. There a long stretch of steep grade -yes we slowed down, but, so did everyone else!
At Camping World, the norm is a 30' trailer with all the bells and whistles -and it weighs several tons! They expect diesel pickups to be the tow vehicles! Teardrops are NOT on their radar! The weight of a tear is well WITHIN 2500 lbs recommended weight for a Forester to tow -its why we got the Forester instead of a Honda CR-V
We took towed our teardrop from SO cal to Lincoln City, OR this summer on a 20 day trip -no problems! It handles great!
I went to a trailer shop that specializes is trailers and hitches. They did a great job, and we have been very happy.
KEEP DREAMING -it will work!
Eileen