LAS VEGAS, NV (May 5, 2026) – Mack Trucks today announced that the Mack® MP®13 engine, the most powerful and efficient engine Mack has ever produced, will be EPA 2027-compliant. Mack made the announcement and showcased the engine during the Advanced Clean Transportation (ACT) Expo 2026, May 4-7, at the Las Vegas Convention Center in Las Vegas, Nevada.