Trying to Compare the Orig. Spec MPG for Over the Road Tractors...can't find data
 

I hope someone can lead me to the right source, I'm looking to do a comparison of MPG data for Sterlings, Peters, Ints. and so forth built from 2001 to 2014 and was hoping for a chart of sorts.

While there is plenty for cars I'm not having any success find the data for the rigs. Any ideas?

MPG on a road tractor depends on things that aren't specific to the company that builds the cab, and frame. Engine size, gearbox, and axle ratios can be specified by the customer when the truck is ordered, so there's a broad range of different factory installed equipment that would have come in the same model truck.

Maybe you could talk to a trucking co, or an owner/operator and see what they know.

I was hoping just to get a base line from the OEM but I can't find anything that is not 2014...

Fleet operators are your best source