The agency says total exports of goods were down $3.7 billion to $112.7 billion, marking a third consecutive quarterly drop.
Exports of energy products were down $1.6 billion, on lower volumes of crude petroleum and refined petroleum products and there were also drops in exports of consumer goods and industrial chemical products.
Imports declined $2.5 billion in the third quarter, following a high set in the previous quarter.
Motor vehicles and parts imports fell $700 million and energy products declined $500 million.
The overall balance on trade in goods posted a $4.8 billion deficit in the third quarter, following a $3.6 billion deficit in the previous quarter.
The trade surplus with the United States declined by $600 million, as exports were down $2.4 billion and imports were off by $1.8 billion.