Choose the Peterbilt 579 for OTR driver comfort — its 76" sleeper options exceed the Peterbilt 520's 0" maximum. The Peterbilt 579 offers more peak power (605 hp vs 500 hp), giving it an edge for heavy-haul and mountainous routes. The Peterbilt 579 starts at a lower base MSRP ($135k vs $200k), offering better entry-level value.
| Spec | Peterbilt 520 60 available · from $127,500 | Peterbilt 579 1151 available · from $19,995 |
|---|---|---|
| Engine Options | ||
| Engine options | PACCAR MX-11, Cummins L9, Cummins X12 | PACCAR MX-13, PACCAR MX-11, Cummins X15 |
| Horsepower range | 260–500 hp | 370–605 hp |
| Peak torque | 1,700 lb-ft | 2,050 lb-ft |
| Weight Ratings | ||
| GVWR (max) | 66,000 lbs | 80,000 lbs |
| GCWR | 66,000 lbs | 220,000 lbs |
| Transmission Options | ||
| Transmissions | Allison 4500 RDS, PACCAR Automated 12-speed (TX-12) | PACCAR Automated 12-speed (TX-12), Eaton Fuller 10-speed, Allison 4700 RDS |
| Dimensions | ||
| Wheelbase options | 4 options (152"–212") | 7 options (210"–280") |
Choose the Peterbilt 579 for OTR driver comfort — its 76" sleeper options exceed the Peterbilt 520's 0" maximum. The Peterbilt 579 offers more peak power (605 hp vs 500 hp), giving it an edge for heavy-haul and mountainous routes. The Peterbilt 579 starts at a lower base MSRP ($135k vs $200k), offering better entry-level value.
Both the Peterbilt 520 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 Peterbilt 520 is built by Peterbilt 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 Peterbilt 520 tops out at 500 hp / 1700 lb-ft torque. The Peterbilt 579 tops out at 605 hp / 2050 lb-ft. GVWR is 66,000 lbs for the Peterbilt 520 and 80,000 lbs for the Peterbilt 579.
TruckRadar has 1,211 Peterbilt 520 and Peterbilt 579 trucks available right now from dealers nationwide. Search by make, model, price, and location at truckradar.ai.
| Sleeper sizes | No sleeper | 40", 52", 72", 76" |
| Pricing (estimated) |
| Base MSRP range | $200,000–$280,000 | $135,000–$185,000 |