I thought I'd share my latest towing experience with my Honda Ridgeline and USA7's Mission trailer.
The first time I towed my trailer/Birkin combo I got just under 15mpg on the way to Carlisle when the Ridgeline had appr 2400 miles on it. I took it up to Buffalo in July with 8500 miles on it, and got 20.5 mpg with the unloaded trailer and 17.2 with the Birkin loaded on the way back. This was doing right around 65-68 mph. I had heard that the Ridgeline fuel mileage improves once you got past 7500 miles and my experience seems to verify that. It really makes a very good light/medium-duty tow package. I was able to put the gearbox and many other parts in the huge trunk under the bed, strap the motor in the bed with some other containers, and throw all the paperwork and clean parts under the back seat. The Ridgeline is very comfortable to drive, excellent in the rain and snow, and pulls my car/trailer combo like it's not there other than downshifting into 4th gear, and sometimes 3rd gear, when going up an incline on the highway. It might not be a torque-monster, and I don't think I'd like pulling the 5000# limit, but it suits my needs perfectly.