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Electrical systemPart report

2020 Peterbilt 579 Electrical system Problems

Complaints
2about this part
Share
40%of 5 total for the year
Median mileage
349,571miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 2 complaints about the electrical system of the 2020 Peterbilt 579, 40% of the 5 complaints for this model year. Where a mileage was given, the median is 349,571 miles. 3 recall campaigns on record are filed under a similar system.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“Odometer Fraud. The contact purchased a 2020 Peterbilt 579. The contact stated that while attempting to register the vehicle, it was discovered that there was a mileage discrepancy. The vehicle was a dealer sale. At the time of purchase, the vehicle mileage was 217,000, and at the time of registration, it was discovered that the mileage was 349,571.”

NHTSA complaint #11688101, filed 2025-09, 349,571 miles

Related recalls

Related service bulletins

Electrical system: other model years

YearComplaintsShare of year
2022229%
2020240%
2018457%

Other parts of the 2020 Peterbilt 579

Transmission and drivetrain
2 complaintsBrakes
1 complaintsElectronic stability control
1 complaintsEngine
1 complaintsForward collision avoidance
1 complaints

← All problems reported for the 2020 Peterbilt 579

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology