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Volvo Group detects premature degradation of NOx emissions control component; in talks with EPA, CARB

The Volvo Group—a global manufacturer of trucks, buses, construction equipment and marine and industrial engines, but not Volvo Cars—has reported that it has detected that an emissions control component used in certain markets is degrading more quickly than expected, which could cause the engines to exceed emissions limits for nitrogen oxides (NOx).

All products equipped with the component meet emissions limits at delivery; the degradation is due to a materials issue that occurs over time. A full analysis of the issue is not completed and it is not possible to assess the financial impact at this stage; however, the Group said in a statement that the cost could be “material”.

The investigation so far indicates that the degradation does not seem to affect all vehicles and engines in the same way and to the same extent. The company is now in the process of informing the appropriate authorities in various markets, and beginning discussions regarding remediation plans.

The degradation of the component does not pose a product safety issue, nor does it negatively affect vehicle or engine performance in areas other than emissions control. The degradation is a result of a materials issue that occurs over time.

The Group emphasized that all engines and vehicles equipped with the component meet emissions limits at delivery. The largest volume of potentially affected engines has been sold in North America and Europe.

The US Environmental Protection Agency (EPA) and the California Air Resources Board (CARB) have been meeting with Volvo to discuss ways to address the faulty emissions control component in the vehicles, according to reports.

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