AI-generated · grounded in NHTSA data
Reliability & 5-year cost of ownership — 2023 Peterbilt 579
Overall rating NHTSA-grounded
Below average
Estimated 5-year repair + maintenance cost: $15,000–$30,000
The 2023 Peterbilt 579 faces several critical recalls involving its electrical, brake, and powertrain systems. Given the severity and potential safety issues, these factors significantly impact its reliability, earning it a below-average rating despite low complaint numbers.
Most-common failures
| Part | Typical mileage | Cost range | Frequency |
|---|---|---|---|
| HV contactors | 20,000–40,000 miles | $500–$1,500 | common |
| Fuel tank | 30,000–50,000 miles | $800–$2,000 | occasional |
| Digital display | 10,000–20,000 miles | $300–$700 | occasional |
| Engine control module | 40,000–60,000 miles | $1,000–$2,500 | occasional |
| Parking brake module | 15,000–30,000 miles | $400–$1,000 | rare |
Scheduled maintenance to budget
Routine items every owner should plan for.
- Oil and filter change every 10,000 miles
- Brake inspection and replacement every 30,000 miles
- Transmission fluid change every 60,000 miles
- Replace air and fuel filters every 20,000 miles
- Cooling system flush every 60,000 miles
Warning signs to watch for
Symptoms that signal a major upcoming repair.
- Loss of drive power
- Stiff steering
- Brake warning lights
- Display screen freezing
- Unusual engine noise
Generated by gpt-4o on 6/16/2026. Cost ranges are conservative estimates that account for typical regional variation.