Most new cars and trucks sitting on dealer lots have fuel economy estimates on their window sticker. The only group of vehicles that don't are heavy-duty trucks. This is due to the EPA not requiring automakers to publish estimates on trucks with gross weight ratings that exceed 8,500 pounds. This makes it difficult for folks to compare the heavy-duty trucks with one another or comparing the diesel variants with the light-duty gas versions. Consumer Reports doesn't believe it should be this way and is working on an effort to change this.
Consumer Reports recently tested a Chevrolet Silverado 2500HD, Ford F-250 Super Duty, and Ram 2500 equipped with their optional diesel engines to gauge fuel economy and compare it to their light-duty gas counterparts. Their results show the HD trucks were 1 to 2 MPGs lower than their light-duty counterparts. Of course, you might be saying, that's because heavy-duty trucks have more weight to move. Also, most buyers who are going for this type of truck tend to know what they're getting into.
Heavy-duty trucks begin to show their advantage when it comes to intense workloads, becoming more efficient than a similarly-equipped gas truck.
Still, we think heavy-duty trucks should have fuel economy estimates to help buyers when it comes time to purchase a heavy-duty truck.
“Heavy-duty pickup shoppers shouldn't be left in the dark when it comes to fuel economy,” said David Friedman, director of cars and product policy and analysis for Consumers Union, the policy and mobilization arm of Consumer Reports.