2021 Kenworth W900 ISX / X15 — Used Market Prices & Trends

The 2021 Kenworth W900 powered by the ISX / X15 is currently represented by 7 active listings on TruckRadar, with a median asking price of $129,500 and median odometer reading of 447,266 miles. Over the past 90 days, asking prices have moved up 12.0%. Demand for late-model commercial trucks typically strengthens as fleets refresh ahead of Q3 bid cycles and peak freight season. Most units listed are configured as conventional cab with tandem rear axle (6x4) drivetrains. Geographically, the largest concentrations of 2021 W900 inventory sit in Pennsylvania, Florida, and Nebraska, where regional pricing ranges from $73,900 to $137,750. Common transmission pairings include manual and automated options. The 2021 W900 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 T680 and T880. Pricing reflects active asking prices from verified dealers and is not a substitute for a formal appraisal.

2021 Kenworth W900 ISX / X15 — Frequently Asked Questions