Inside the Peterbilt 579 UltraLoft Epiq Max: Test Drive & Full Sleeper Tour

For this test drive, CCJ visits Peterbilt’s headquarters in Denton, Texas, to evaluate the Peterbilt 579 UltraLoft Epiq Max. The truck is equipped with a complete PACCAR powertrain, including an MX-13 engine, TX-12 transmission and DX-40 rear axles. Joined by Zach Gross, Peterbilt marketing manager, we take the truck on a 110-mile, 65,000-pound test haul from Denton to Bowie, Texas. Along the way, we review the PACCAR MX-13 powertrain, discuss the aerodynamic design of the UltraLoft Epiq Max and highlight its latest technology. We also step into the 80-inch UltraLoft sleeper for a closer look at its industry-leading 8 feet of headroom. What we cover in this video: Aerodynamics & Epiq Max Package: Front bumper air dams, tandem axle fairings, and robotic UltraLoft cab integration. Powertrain Performance: Real-world driving dynamics of the PACCAR MX-13 (455 hp) with a 65,000-lb load, comparing MX power vs. Cummins X15 specs. Cab Tech & Safety: Digital instrument cluster customization, Bendix Fusion 3.0 driver assistance, heated LED lighting, and camera mirror integration. Full UltraLoft Tour: Industry-leading 80-inch sleeper layout, SmartAir no-idle system, wardrobe storage, and work desk features. Truck Specs: 2024 Peterbilt Model 579 UltraLoft Epiq Max Engine: MX-13 455 HP / 1,650 ft-lbs Transmission: PACCAR TX-12 Front Suspension: Meritor MFS+12E 12,500 lbs Rear Axle: PACCAR DX-40 Rear Suspension: Peterbilt Flex Air Interior: Platinum Sterling Contents of this video 00:00 2024 Peterbilt Model 579 UltraLoft Epiq Max 00:44 What Makes It an Epiq? 01:31 What Makes It an UltraLoft? 02:29 Gen 2 Updates: Hood Redesign & Customizable Digital Dash 04:01 Gen 2 Updates: Powertrain, Fairings, Headlamps & Interior 05:26 Camera Mirror Systems & Modern Safety Integration 06:05 PACCAR MX-13 vs. Cummins X15 Powerplants 07:57 Additional UltraLoft Features 09:00 Interior Ergonomics & Driver Comfort: Work Tray, Switches & Storage 09:46 The Future of Truck Tech 11:55 “Passenger Carification” of Transportation 14:15 Owner-Operator Style Meets Fleet Efficiency 15:13 In-Depth UltraLoft Sleeper Tour (SmartAir, Storage, Bunk) 16:43 Final Drive Impressions: Test Drive Wrap-Up Visit CCJ Digital for the latest test drives and reviews: https://www.ccjdigital.com Subscribe to CCJ’s daily newsletter: https://bit.ly/ccjsubscribe #Peterbilt #Peterbilt579 #Testdrive #Trucking