Choose the Peterbilt 579 for OTR driver comfort — its 76" sleeper options exceed the Freightliner 108SD's 0" maximum. The Peterbilt 579 offers more peak power (605 hp vs 380 hp), giving it an edge for heavy-haul and mountainous routes.
| Spec | Freightliner 108SD 14 available · from $51,649 | Peterbilt 579 1021 available · from $19,990 |
|---|---|---|
| Engine Options | ||
| Engine options | Cummins L9, Detroit DD8, Cummins B6.7 | PACCAR MX-13, PACCAR MX-11, Cummins X15 |
| Horsepower range | 220–380 hp | 370–605 hp |
| Peak torque | 1,250 lb-ft | 2,050 lb-ft |
| Weight Ratings | ||
| GVWR (max) | — | 80,000 lbs |
| GCWR | — | 220,000 lbs |
| Transmission Options | ||
| Transmissions | Eaton Fuller, Eaton Fuller, Allison 2000 Series, Allison 3000 Series | PACCAR Automated 12-speed (TX-12), Eaton Fuller 10-speed, Allison 4700 RDS |
| Dimensions | ||
| Wheelbase options | 3 options (108"–156") | 7 options (210"–280") |
Choose the Peterbilt 579 for OTR driver comfort — its 76" sleeper options exceed the Freightliner 108SD's 0" maximum. The Peterbilt 579 offers more peak power (605 hp vs 380 hp), giving it an edge for heavy-haul and mountainous routes.
Both the Freightliner 108SD and Peterbilt 579 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 Freightliner 108SD is built by Freightliner and the Peterbilt 579 is built by Peterbilt. Both are Class 8 conventional tractors but differ in powertrain options, cab dimensions, dealer networks, and MSRP.
The Freightliner 108SD tops out at 380 hp / 1250 lb-ft torque. The Peterbilt 579 tops out at 605 hp / 2050 lb-ft. GVWR is similar lbs for the Freightliner 108SD and 80,000 lbs for the Peterbilt 579.
TruckRadar has 1,035 Freightliner 108SD and Peterbilt 579 trucks available right now from dealers nationwide. Search by make, model, price, and location at truckradar.ai.
| Sleeper sizes | — | 40", 52", 72", 76" |
| Pricing (estimated) |
| Base MSRP range | — | $135,000–$185,000 |