Pricing a 2020-2023 Peterbilt 579 in Today's Market

The sleeper config carries the price. A 72" Ultraloft in clean condition trades at a 10-15% premium to a 58" Mid-Roof of the same year and mileage.

Mileage tiers have hardened in 2026: sub-200K trucks have held value, 200-400K cluster tightly, and 400K+ trade against residual engine & transmission life remaining.

TRP / premium spec packages (premium interior, 1550 MaxxForce delete, Eaton Ultrashift Plus) add $8-12K to a clean 579.

Freight rates matter. When spot rates soften, used truck resale softens with a 60-day lag. Watch the DAT national van rate and discount inventory you're holding through a soft quarter.