2021 Peterbilt 579

The 2021 Peterbilt 579 delivers the perfect balance of performance, comfort, and efficiency—built for fleets and owner-operators who demand dependable long-haul capability. Powered by the proven PACCAR MX-13 engine producing 455 HP, this truck offers smooth, fuel-efficient power paired with the Eaton Fuller 12-Speed Endurant automated transmission for confident shifting and reduced driver fatigue. Inside, the spacious 80" sleeper provides a premium environment for productivity and rest, designed with driver-focused ergonomics, ample storage, and optimized climate and sound insulation. With its aerodynamic design, advanced engineering, and legendary Peterbilt durability, the 579 stands ready for long-distance operations with lower operating costs and exceptional reliability.