Choose the Peterbilt 389 for OTR driver comfort — its 78" sleeper options exceed the Western Star 57X's 72" maximum. The Western Star 57X offers more peak power (600 hp vs 0 hp), giving it an edge for heavy-haul and mountainous routes.
| Spec | Peterbilt 389 271 available · from $46,950 | Western Star 57X 372 available · from $17,950 |
|---|---|---|
| Engine Options | ||
| Engine options | — | Detroit DD16, Detroit DD13 Gen 5, Detroit DD15 Gen 5 |
| Horsepower range | — | 370–600 hp |
| Peak torque | — | 2,050 lb-ft |
| Weight Ratings | ||
| GVWR (max) | — | — |
| GCWR | — | — |
| Transmission Options | ||
| Transmissions | — | Detroit DT12 Direct and Overdrive AMT |
| Dimensions | ||
| Wheelbase options | 0 options (undefined"–undefined") | 0 options (undefined"–undefined") |
| Sleeper sizes | 72", 78" | |
Choose the Peterbilt 389 for OTR driver comfort — its 78" sleeper options exceed the Western Star 57X's 72" maximum. The Western Star 57X offers more peak power (600 hp vs 0 hp), giving it an edge for heavy-haul and mountainous routes.
Both the Peterbilt 389 and Western Star 57X hold strong resale value among owner-operators and fleets. Resale depends heavily on mileage, maintenance history, and regional demand — not OEM brand alone. Check current listings on TruckRadar for real-world asking prices.
No. The Peterbilt 389 is built by Peterbilt and the Western Star 57X is built by Western Star. Both are Class 8 conventional tractors but differ in powertrain options, cab dimensions, dealer networks, and MSRP.
The Peterbilt 389 tops out at 0 hp / 0 lb-ft torque. The Western Star 57X tops out at 600 hp / 2050 lb-ft. GVWR is similar lbs for the Peterbilt 389 and similar lbs for the Western Star 57X.
TruckRadar has 643 Peterbilt 389 and Western Star 57X trucks available right now from dealers nationwide. Search by make, model, price, and location at truckradar.ai.
| 60", 72" |
| Pricing (estimated) |
| Base MSRP range | $155,000–$215,000 | — |