Small fleets, builders, and rural dealers are seeing rising costs and longer downtime, not because they’re neglecting maintenance, but because modern emissions hardware is fragile, complex, and poorly suited to the way trucks are used. This mismatch is creating a quiet crisis in the structural building industry.

These problems are self-inflicted. The U.S. Environmental Protection Agency sets multiple tier levels, referred to as Tier 4 standards, to reduce emissions from diesel engines. These standards for nonroad vehicles and machinery increase fuel and equipment prices for the agricultural and construction industries while decreasing reliability.

In addition, diesel exhaust fluid (DEF), which is required to meet these standards for many diesel engines, often causes engines to break down. These breakdowns result in additional maintenance and repair costs for small businesses.

For instance, I spoke with an Iowan manufacturer who bought two low-mileage 2015 Freightliners and was hit with more than 20,000 dollars in emission system repairs right after purchase. To escape that spiral, they moved to new trucks only to pay roughly 25,000 dollars extra per unit for emissions equipment alone, plus several thousand dollars per truck each year in DEF, filters, diagnostics, and added downtime.

Light-duty work trucks aren’t spared. A construction firm that uses the 2500 series pickups and runs about 10 of them normally sees constant check engine lights, forced regeneration, and clogged particulate filters. A forced regeneration can run 1,000 dollars, while a replacement Diesel Particulate Filter costs up to 3,500 dollars before labor.

A small Chevy dealer in eastern Iowa told me that about 75 percent of the three-quarter-ton pickups in his shop are there for emission system issues, averaging 1,500 dollars per visit, mostly on trucks used in agriculture.

Larger fleets are forced to maintain “shadow fleets” of backup trucks just to cover emission-related breakdowns. Others turn to glider kits or illegal deletes, risking fines because compliance has become economically punishing.

These are not abstract regulatory costs. They are a direct, compounding tax on the people who move building materials, raise crops, and keep local economies running.

These companies all expressed the same sentiment to the Office of Advocacy: the strict requirements of the Tier 4 standards compelled them to invest heavily in repairs and new equipment.

With so many businesses heavily impacted by EPA’s Tier 4 standards, Advocacy has placed the rule on our Most Wanted list, which identifies priority federal agency rules for rescission, withdrawal, or modification. Removing or modifying this rule will result in significant benefits for Iowa builders and will reduce costs for Americans.

If you are experiencing pain points and need assistance, please connect with a regional advocate in your area or contact the Office of Advocacy through the Red Tape Hotline. Call the Red Tape Hotline at 800-827-5722 and select option 3 or send an email to RedTape@sba.gov.

AUTHOR:

Joe Krenzelok, Region 7 Advocate

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