Choose the Peterbilt 389 for OTR driver comfort — its 78" sleeper options exceed the Mack Granite's 0" maximum. The Mack Granite offers more peak power (505 hp vs 0 hp), giving it an edge for heavy-haul and mountainous routes.
| Spec | Mack Granite 491 available · from $39,500 | Peterbilt 389 271 available · from $46,950 |
|---|---|---|
| Engine Options | ||
| Engine options | Mack MP8, Mack MP7, Cummins L9N | — |
| Horsepower range | NaN–505 hp | — |
| Peak torque | 1,850 lb-ft | — |
| Weight Ratings | ||
| GVWR (max) | — | — |
| GCWR | — | — |
| Transmission Options | ||
| Transmissions | Mack mDRIVE HD | — |
| 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 Mack Granite's 0" maximum. The Mack Granite offers more peak power (505 hp vs 0 hp), giving it an edge for heavy-haul and mountainous routes.
Both the Mack Granite and Peterbilt 389 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 Mack Granite is built by Mack and the Peterbilt 389 is built by Peterbilt. Both are Class 8 conventional tractors but differ in powertrain options, cab dimensions, dealer networks, and MSRP.
The Mack Granite tops out at 505 hp / 1850 lb-ft torque. The Peterbilt 389 tops out at 0 hp / 0 lb-ft. GVWR is similar lbs for the Mack Granite and similar lbs for the Peterbilt 389.
TruckRadar has 762 Mack Granite and Peterbilt 389 trucks available right now from dealers nationwide. Search by make, model, price, and location at truckradar.ai.
| Pricing (estimated) |
| Base MSRP range | — | $155,000–$215,000 |