While not an MDX, my Ridgeline (pretty much the same 3.5l engine, drivetrain, etc) pulls my race car and trailer nicely (approx 4500 lbs), even over mountains like the Tejon pass. One thing is when going uphill, don't try and keep the revs low. You will overheat. Mash the gas and let the grade logic do its work. At 2500 lbs, I think you'll be pretty safe. I added on a nice B&M Racing ATF cooler on my Ridgeline just because of the mountain passes to get to the race tracks and most of the races are during the summer so I'll be towing in 100+ degree heat.