2020 Peterbilt 579 problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
4 owner complaints analyzed
6 distinct recall campaigns
264,786 mi median reported failure mileage
Scope: 2020 model year. Data snapshot: . 2 complaints include usable failure mileage.
This selection has limited data. It remains available for lookup but is excluded from search indexing.
Most common problems
Electrical System:Instrument Panel:Speedometer/Odometer is the most frequently named component, appearing in 1 of 4 complaints (25.0%). A complaint can name multiple components.
| Topic | Matching reports | Share of complaints |
|---|---|---|
| Braking behavior | 1 | 25.0% |
Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
| Category | Count |
|---|---|
| Electrical System:Instrument Panel:Speedometer/Odometer | 1 |
| Electronic Stability Control (Esc) | 1 |
| Forward Collision Avoidance: Automatic Emergency Braking | 1 |
| Power Train | 1 |
| Service Brakes | 1 |
Electrical System:Instrument Panel:Speedometer/Odometer: 1; Electronic Stability Control (Esc): 1; Forward Collision Avoidance: Automatic Emergency Braking: 1; Power Train: 1; Service Brakes: 1
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 0 |
| 25,000 to 49,999 | 0 |
| 50,000 to 74,999 | 0 |
| 75,000 to 99,999 | 0 |
| 100,000 to 149,999 | 0 |
| 150,000 and above | 2 |
Under 25,000: 0; 25,000 to 49,999: 0; 50,000 to 74,999: 0; 75,000 to 99,999: 0; 100,000 to 149,999: 0; 150,000 and above: 2
150,000 and above miles has the most reports with usable mileage (2). 2 complaints have missing, zero or invalid mileage.
Complaints over time
Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.
| Category | Count |
|---|---|
| 2020 | 1 |
| 2023 | 1 |
| 2025 | 1 |
| 2026 | 1 |
2020: 1; 2023: 1; 2025: 1; 2026: 1
Pattern summary
Electrical System:Instrument Panel:Speedometer/Odometer leads the component reports. Braking behavior appears in 1 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.
Calculated from recorded counts. An AI narrative has not been published for this selection.
Complaint evidence
Examples provide context, not a representative sample or a verified diagnosis.
Owner report 11560967 · 2023-12-19 (December 19, 2023)
Vehicle has a following distance sensor on front bumper. Sensor is sensing overpasses when traveling underneath them and that should not be detected. Vehicle is automatically applying hard braking. This is causing a possible rear end collision and or loss of vehicle controll in wet conditions.
Owner-reported narrative. Look up ODI 11560967 at NHTSA ↗