2023 Peterbilt 579 ISX 15L — Used Market Prices & Trends

The 2023 Peterbilt 579 powered by the ISX 15L is currently represented by 8 active listings on TruckRadar, with a median asking price of $83,900 and median odometer reading of 420,122 miles. Over the past 90 days, asking prices have moved down 4.8%. Seasonal softening in the used truck market tends to occur as fleets delay purchasing decisions during slower freight periods. Most units listed are configured as conventional cab with tandem rear axle (6x4) drivetrains. Geographically, the largest concentrations of 2023 579 inventory sit in Missouri, where regional pricing ranges from $83,900 to $83,900. Common transmission pairings include manual and automated options. The 2023 579 typically appears in dealer inventory for an average of 30 to 60 days before sale, based on TruckRadar listing turnover data. Buyers comparing this configuration often also evaluate the 567 and 389. Pricing reflects active asking prices from verified dealers and is not a substitute for a formal appraisal.

2023 Peterbilt 579 ISX 15L — Frequently Asked Questions