The final economy/emissions regulations announced Wednesday may have a wide-ranging impact on the new and used truck market. The ruling is broad and complex, but the main facets are simple enough to lay out.

The stated goal of the rule is to reduce GHG (greenhouse gas) emissions and improve energy security. Overall GHG (Greenhouse Gas) emissions will be measured by gram per ton-mile (basically, how many grams of CO2 are emitted per mile, taking weight into account). Fuel economy will be measured by gallon per ton-mile (how many gallons are used per mile, taking weight into account). The standards will phase in for the 2017 model year. Here’s a table outlining the standards for combination tractors:



The EPA states that these standards will achieve between 9-23% reduction in emissions and fuel consumption from 2010 baselines.

For medium duty trucks, EPA and NHTSA are setting standards similar to the CAFE (Corporate Average Fuel Economy) regulations in effect for light vehicles. Standards for each manufacturer will depend on sales mix, with less stringent targets for higher-capacity trucks. 2WD/4WD mix will also be taken into account. The standards will phase in starting in 2014, and increase in stringency each model year through 2018.

NHTSA’s corporate average standards for fuel economy will be voluntary in 2014 and 2015. The agencies are providing OEM’s with two timetable choices, as follows:


The agencies claim a 17% decrease in GHG emissions and a 15% improvement in fuel consumption for medium duty diesel vehicles compared to a common baseline.

For vocational and construction vehicles (including buses), the following standards will go into effect:



These regulations will result in a claimed 6-9% reduction in emissions compared to 2010.

Tire standards and air conditioning/refrigerant regulations are also included in the ruling – we’ll look at those at a later date.
ATD (American Truck Dealers Association) has been closely monitoring every step of this rulemaking procedure and advocating dealers’ interests. Check www.atd.org for updates.

And here’s the link to the official EPA site with all relevant documents. These are just the basics.

Stay tuned to this blog for further commentary going forward.