Mack Unveils EPA 2027-Compliant MP13 Engine With More Power, Better Fuel Economy Along with unveiling its EPA 2027-compliant MP13 engine, Mack outlined powertrain changes across its Class 6-8 lineup, including new Cummins-based X10 engines. Mack Trucks announced its new Mack MP13 diesel engine for EPA 2027 emissions regulations and outlined the 2027 powertrain changes for its lineup of Class 6-8 trucks during the Advanced Clean Transportation Expo in Las Vegas. The MP13 is the most powerful and efficient engine Mack has ever produced. It delivers up to 540 horsepower and 1,950 lb.-ft. of torque while providing up to 3% improved fuel efficiency compared with previous MP13 engines. Ad Loading... In addition, it delivers stronger stopping power, with up to 630 braking horsepower — more than 20% improvement over its prior iteration. The updated Mack mDrive automated manual transmission complements the engine with faster engine-to-transmission communication for quicker, smoother shifts. The MP13 meets EPA 2027 emissions standards through engine enhancements that deliver a more complete combustion and lower engine-out CO2, soot and particulate matter. Ad Loading... It attains a nearly 75% reduction in nitrogen oxides (NOx) over the previous engine. The MP13 also features an optimized torque curve that delivers peak torque as low as 900 RPM for improved drivability and downspeeding, a more efficient turbocharger, and advanced predictive software that smooths engine response to driver demands. How Mack is Meeting Emissions Limits The new MP13 is essentially the same platform as Volvo’s new D13 EPA 2027 engine, but with horsepower and power curves designed for Mack customers, said Govi Kannan, SVP global product owner, during a press conference at ACT Expo. It features the new compact graphite iron block and an added heater system for the aftertreatment. The graphite iron block is lighter weight than the previous block, offsetting some