Choose the Kenworth T680 for OTR driver comfort — its 76" sleeper options exceed the Western Star 57X's 72" maximum. The Western Star 57X offers more peak power (600 hp vs 510 hp), giving it an edge for heavy-haul and mountainous routes.
| Spec | Kenworth T680 947 available · from $14,999 | Western Star 57X 255 available · from $19,500 |
|---|---|---|
| Engine Options | ||
| Engine options | PACCAR MX-13, PACCAR MX-11 | Detroit DD16, Detroit DD13 Gen 5, Detroit DD15 Gen 5 |
| Horsepower range | 355–510 hp | 370–600 hp |
| Peak torque | 1,850 lb-ft | 2,050 lb-ft |
| Weight Ratings | ||
| GVWR (max) | — | — |
| GCWR | — | — |
| Transmission Options | ||
| Transmissions | PACCAR Automated Transmission, PACCAR TX-18 | Detroit DT12 Direct and Overdrive AMT |
| Dimensions | ||
| Wheelbase options | 0 options (undefined"–undefined") | 0 options (undefined"–undefined") |
Choose the Kenworth T680 for OTR driver comfort — its 76" sleeper options exceed the Western Star 57X's 72" maximum. The Western Star 57X offers more peak power (600 hp vs 510 hp), giving it an edge for heavy-haul and mountainous routes.
Both the Kenworth T680 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 Kenworth T680 is built by Kenworth 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 Kenworth T680 tops out at 510 hp / 1850 lb-ft torque. The Western Star 57X tops out at 600 hp / 2050 lb-ft. GVWR is similar lbs for the Kenworth T680 and similar lbs for the Western Star 57X.
TruckRadar has 1,202 Kenworth T680 and Western Star 57X trucks available right now from dealers nationwide. Search by make, model, price, and location at truckradar.ai.
| Sleeper sizes |
| 52", 76" |
| 60", 72" |
| Pricing (estimated) |
| Base MSRP range | — | — |