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Introducing the Model Peterbilt 579 UltraLoft with an integral cab-sleeper design, the UltraLoft takes the already superior Model 579 to a new level of driver comfort and performance. The distinctive, bold exterior features a sculpted roofline optimized to achieve a smooth airflow around the vehicle. The Peterbilt 579 UltraLoft also features a brand-new standard sun visor with integrated marker lights as well as extenders and closeouts to deliver a 2% improvement in aerodynamic efficiency. On the brand-new sleeper, large, tilting upper windows allow more natural light inside the cabin, and full-height doors provide easy access to the luggage compartment. With the addition of the new Peterbilt 579 UltraLoft, Peterbilt now offers the most comprehensive lineup of fuel-efficient, aerodynamic trucks in the industry.
The Peterbilt 579 UltraLoft offers the ultimate driving, living and working environment. The high-quality interior is created from soft-touch materials and features a superb fit and finish for an outstanding driver experience. Headroom is exceptional, with an interior height of over eight feet. The Peterbilt 579 UltraLoft interior offers the largest storage capacity available in any comparable vehicle, with more than 70 cubic feet of space including multiple compartments, a large wardrobe closet and several cubbies that can accommodate up to two CPAP machines. Access to the upper bunk is optimal thanks to a cleverly designed fold-away ladder that disappears when not in use. The interior also features many creature comforts such as space for small appliances, entertainment options, power outlets and other special touches that make the Model 579 UltraLoft the preferred choice of drivers.
The fully integrated PACCAR Powertrain is a major advancement in innovative technologies that provides Peterbilt customers with long-term value. The PACCAR MX-13 and MX-11 engines, the PACCAR Transmission and the PACCAR 40k Axle are designed to work seamlessly together for superior performance.