Originally Posted by an8sec70cuda
Just for comparison...as far as fuel mileage.

2005 Chevrolet 2500HD 4x4 6.0 GAS engine.
unloaded (no trailer) normal driving...12 mpg
loaded OPEN car trailer...10-11 mpg and felt like it had plenty of power.
loaded 24' ENCLOSED trailer...around 5 mpg (at best) and felt like it had NO power.

2006 GMC 2500HD 4x4 Duramax diesel
unloaded (no trailer) normal driving...16-17 mpg
never calculated it w/ the open car trailer b/c I rarely use it anymore.
loaded 24' ENCLOSED trailer...10 mpg and has plenty of power. Feels like it would still drag it 80 mph w/ 4 flat tires. The truck is basically stock, no programmer/tuner or anything.
I don't tend to drive very easy when pulling the trailer. It has the power so I like to use it, lol.

When I say the enclosed is loaded, it has my 3500 lb. cuda, a golf cart, plus tools and other crap in it.


My truck is a 2012 Ram quad cab, Hemi auto, 3.92 rear axle.
Gets right at 18-20 mpg empty
I rented an open U haul trailer last year to pick up a car in Ca averaged right at 14mpg. and you could barely notice it was even there.
my trip back form Ky with this enclosed and a partial load is getting in the 8-10 range
It never felt like it didnt have any power or did it have any trouble pulling or stopping it

on-Trailer.jpg