StaffAllpar HomeMore NewsCarsTrucksUpcomingRepairsTest drives

Chassis cabs to get higher mpg

by David Zatz on

Federal agencies will propose tighter rules for efficiency in medium and heavy duty trucks (Classes 4-8), including Ram 4500 and 5500 chassis cabs. Preliminary rules are to be released by March 2015, with a final rule for the 2019 model  year unveiled by March 2016.

The 2014 model year marked the first fuel efficiency standards for trucks in this class, required by a law passed by Congress and signed by President Bush in 2007. The intent is to reduce fuel usage in the covered trucks by up to 20%.

The first set of rules, enacted in 2011 and working from 2014-2018, are expected to save truckers $50 billion in fuel costs (530 billion barrels of oil), at the cost of around $8 billion in higher vehicle prices. This is a hefty net savings, and should result in a slight reduction of America’s trade deficit and possibly lower diesel prices for other drivers. The largest fuel savings are targeted at “big rigs” (combination tractors).

David Zatz founded Allpar in 1998 (based on a site he had begun in 1993-94), after years of writing reviews for retail trades. He has been quoted by the New York Times, the Daily Telegraph, the Detroit News, and USA Today. Before making Allpar a full-time career, he was a consultant in organizational psychology. You can reach him by using our contact form (much preferred) or by calling (313) 766-2304


Aussies go for Mopar squads
2017 Jeep Compass
Compass’ loose nuts

Another alternator recall

More Mopar Car
and Truck News

Some popular Allpar pages





Dodge Demon

2018 Wrangler JL



Staff details/contactsTerms of ServiceInformation is presented to the best of our knowledge. Plans change and sometimes mistakes are made. Decisions or purchases made based on this site's verbiage or images are done at the reader's own risk. Also see the Allpar News archives, 1997-2008 • Copyright © 2008-2017, Allpar LLC. All rights reserved. • Mopar, Dodge, Jeep, Chrysler, HEMI, and certain other names are trademarks of Fiat Chrysler Automobiles.