My 2018 Ridgeline noticeably vibrates when towing my boat between 25-35 mph. At 60 or 70 on the highway, it's fine. The boat, motor and trailer are about 2,500 pounds so capacity should not be an issue. The dealer - Honda North in Topsfield, Mass. - wants me to bring it in towing the trailer. But the dealer is a half hour away and there's no way I could navigate its jammed parking lot with the boat in tow (19' Key West center console). Maybe I should put it in D4 when I tow? Plus, I've been at the dealer twice in the past three weeks, once for an oil change and once because the emissions light came on. The fix was all new fuel injectors at just over 8,000 miles on the vehicle. The emissions light also came on at 500 miles. I am sort of disillusioned with the vehicle. My 2011 Silverado, which I traded, is looking really good right. No problems for the 51k miles I put on it.