sharing little more than its displacement with its predecessor; the T444E became the first Ford PowerStroke engine. While the DT360 was withdrawn (largely replaced by the T444E), the DT466 (now the DT466E) was joined by the larger DT530E (competing primarily against the Cummins C8.3). For the 2000s, International began developing engines to comply with updated emissions standards for commercial vehicles. During 2003, the T444E was discontinued and replaced the VT engine family, introduced by the VT365 V8. For 2004, the DT engines received modernized fuel injection and a redesigned turbocharger; the DT530 was replaced by the DT570 (sized between the Caterpillar C9 and the Cummins ISL). In place of using Selective Catalytic Reduction (SCR) to treat engine emissions, International adopted Exhaust Gas Recirculation (EGR), a configuration used with success in automobiles with gasoline engines. For 2007 emissions compliance, International launched the "MaxxForce" branding for its diesel engines. The VT engine family consisted of the 4.5L MaxxForce 5 V6 and the 6.4L MaxxForce 7 V8 (replacing the VT365). The DT466 became the MaxxForceDT, with the DT and HT570 becoming the MaxxForce 9 and 10, respectively. For its Class 8 trucks, the company introduced "large-bore" engines for the first time, introducing the 10.5L MaxxForce 11 and the 12.4L MaxxForce 13. After the 2010 model year, Ford ended its engine supply agreement with International, continuing the PowerStroke range under its own designs. The MaxxForce 7 and DT engines were updated with twin turbochargers to improve emissions compliance. Following several years of difficulty reliably matching 2007 and 2010 emissions compliance, International chose to end diesel engine production following the 2015 model year, replacing the MaxxForce 7 and MaxxForceDT with the Cummins ISB6.7 and ISL9, respectively. In 2017, International reentered the diesel engine production segment, launching the A26 12.4L inline-6. Largely serving as a company-produced successor to the MaxxForce 13, the A26 was developed from the MAN D26 engine. In 2022, Navistar introduced the International S13 engine. Unlike the A26, the S13 engine operates on low revolutions and higher torque equating to fewer fuel injections and less fuel consumption. This engine uses selective catalytic reduction (SCR) technology, something that has never been used in Navistar's older engines. Plug-in electric vehicles Plug-in hybrid electric bus The U.S. Department of Energy announced in 2009 the selection of Navistar Corporation for a cost-shared award of up to million to develop, test, and deploy plug-in hybrid electric vehicle (PHEV)