Peterbilt Models 2025. The legendary peterbilt model 589 delivers maximum power, reliability and uptime, advanced driver technologies, supreme comfort, and iconic style and craftsmanship. Peterbilt model 537 is the class 7 workhorse that's ready for every upfit.
579 model engine design is more fuel efficient than previous models. Peterbilt model 537 is the class 7 workhorse that’s ready for every upfit.