Re: towing over vehicle capacity
This may be a bit late but I own three vehicles, an '04 Ford Crown Victoria, a '04 F150, and a 95 Ranger pickup. The F150 is rated at something like 5500 lbs or so, the Ranger at 1100 with the long bed 4 cylinder stick, and the Crown Vic at 1000lb with towing package, which mine does not have.
My heaviest boat is about 2200 lbs. The F150 is a 4x2 and hates the ramp, it spins and carries on if I don't put 500 or so pounds in the bed. It pulls fine on the road. The same with the Ranger, it tows just about anything I hang on the hitch and even gets good mileage doing it, but its limit on the ramp is about 800lbs at most places. The Crown Vic, which isn't really a tow vehicle, got a hitch added to carry a bike rack, with no intention of ever towing a trailer. However, after buying a boat 400 miles from home one day, it got put to the test.
I got to both try towing with it and launching with it as we test ran the boat before buying it. I did better than either of my trucks, in both towing, launching, and gas mileage. Not to mention power. For a vehicle that isn't supposed to be able to tow it sure does a great job at it. The boat weighed in at 2,200 on the trailer and I never even felt it back there, on my truck, that boat bucks and jerks all over. The Ranger tows it smoothly but I wouldn't attempt trying to keep the Ranger alive trying to climb the ramp with that much weight. It has enough trouble getting going without a boat on it with a 2.31:1 rear axle ratio. To make it worse, the Crown Vic is faster by plenty. I bought both new, and neither have more than 16,000 miles on them. The Ranger has 40K and was also bought new by me.
I've since used the Crown Vic twice to take my smaller boat on trips, it does fine and it hardly even affects gas mileage. The truck drops from 13 to about 10 mpg with any trailer. The Ranger from 25 down to about 12 mpg.
What makes me wonder is why my F150 and my Crown Vic both use the same motor and transmission, both have the same gear ratio, and both are in the 4100lb range, yet the Crown Vic has gotten 27 mpg, but the F150 has trouble getting 14 mpg?