Navistar International has lost its bid to force the U.S.
Environmental Protection Agency (EPA) to recall competitors' 2010
engines using Selective Catalytic Reduction (SCR) technology. A
federal judge ruled that the engine manufacturer cannot force the
EPA to recall products, which Navistar claims are more pollutant
and do not comply with standards under the Clean Air Act.
Navistar says the SCR engines approved by the EPA actually
violate emissions standards when on the road.
The company responded to increasingly strict emissions
reductions standards with Exhaust Gas Recirculation (EGR), as
opposed to competitors Volvo and Daimler, which adopted SCR
technology. As a consequence, Navistar's sales have fallen, and in
the last four weeks its market value slid by as much as 5.1%, the
biggest drop since December 21, 2011.
In July 2011, discoverDEF.com
reported that Navistar was suing the EPA for "unlawful and
preferential" support for SCR technology.