Kenworth T680 vs Peterbilt 579
Two used Cummins X15 options, compared on the numbers that decide it: used price, the failure that costs the most, and recall exposure. Every figure links back to its sourced record.
| Kenworth T680 | Peterbilt 579 | |
|---|---|---|
| Used price (observed) | $12,000 (1 comp) | $9,000 (1 comp) |
| Category | Cummins X15 | Cummins X15 |
| Top documented risk | Fuel pump is the headline complaint (medium) | Fuel pump is the headline complaint (medium) |
| Recall status | None found | None found |
| Our verdict | inspect | inspect |
| Full record | T680 details → | 579 details → |
The bottom line
Kenworth T680: one observed listing at $12,000 — thin comp set. Biggest documented cost risk: Fuel pump is the headline complaint. Buy only after inspection.
Peterbilt 579: one observed listing at $9,000 — thin comp set. Biggest documented cost risk: Fuel pump is the headline complaint. Buy only after inspection.
Both records show every price, failure mode and recall check with the source. Open the full record for the inspection checklist before you buy: Kenworth T680 · Peterbilt 579.