Story perspectives

Trump Removes DEF Sensor Mandate, Saving $13.79 Billion

3/28/2026

Summary

Story summary

On March 27, 2026, U.S. President Donald Trump announced the removal of Diesel Exhaust Fluid (DEF) sensor requirements to save farmers and truckers about 13.79 billion annually.
EPA Administrator Lee Zeldin said the change addresses widespread DEF failures and losses.
The EPA allows switching from Urea Quality Sensors to nitrous oxide sensors.
The move reduces regulatory burdens on agriculture, highlighted during the Great American Agriculture Celebration.

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Story summary

On March 27, 2026, U.S. President Donald Trump announced the removal of Diesel Exhaust Fluid (DEF) sensor requirements to save farmers and truckers about 13.79 billion annually.
EPA Administrator Lee Zeldin said the change addresses widespread DEF failures and losses.
The EPA allows switching from Urea Quality Sensors to nitrous oxide sensors.
The move reduces regulatory burdens on agriculture, highlighted during the Great American Agriculture Celebration.