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NHTSA Owner Complaints

2015 Peterbilt 579

4 owner-reported issues

Owner-reported data
Total complaints
4
Crash reports
0
Fire reports
2
Open recalls
0
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What this means

Fewer than 5 NHTSA complaints filed on 2015 Peterbilt 579. Either the truck is too new for a meaningful sample, or owners aren't reporting issues to NHTSA. The dominant complaint patterns are: POWER TRAIN (25%), FUEL SYSTEM, GASOLINE,ELECTRICAL SYSTEM,ENGINE (25%), SUSPENSION (25%). These three categories cover 75% of all reports — typical signal that there are 2-3 known systemic issues on this make/model/year, not random faults.

Top reported issues
  • #1POWER TRAIN
    1 (25%)
  • #2FUEL SYSTEM, GASOLINE,ELECTRICAL SYSTEM,ENGINE
    1 (25%)
  • #3SUSPENSION
    1 (25%)
  • #4UNKNOWN OR OTHER
    1 (25%)
Recent complaint examples
UNKNOWN OR OTHER0000-00-00

WE PURCHASED THIS TRUCK ON 4/09/21 AND ON 4/13/21 WHILE IT WAS PARKED AT THE YARD IT CUT ON FIRE BY ITSELF, NO EXTERNAL CAUSE OTHER THAN SOMETHING WRONG WITH THE TRUCK THAT WE WERE NOT TOLD OR AWARE. IT LOOKS LIKE IT COULD BE SOME DEFECTIVE PARTS FROM MANUFACTURE THAT HAVE 3 RECA…

Fire
FUEL SYSTEM, GASOLINE,ELECTRICAL SYSTEM,ENGINE0000-00-00

DRIVER WAS DRIVING AND TRUCK JUST SHUT OFF, FORCING HIM TO SIDE OF ROAD, HAD TO GET TOWED DUE TO FACT THAT COULD NOT REPAIR. AT DEALER I AM TOLD FUEL PUMP LEAKED INTO ELECTRICAL HARNESS AND ECM. CAUSING TRUCK TO SHUT DOWN AND NOT START.…

POWER TRAIN0000-00-00

LEAKING FITTINGS ON TRANSMISSION COOLER CAUSED FLUID TO RUN OUT AND SEIZED TRANSMISSION, WHILE DRIVER WAS IN MOTION ON HIGHWAY, DUE TO BAD INSTALLATION AT FACTORY. UPON INSPECTION FOUND 3 OUT OF 5 TRUCKS WITH SAME PROBLEM. WARRANTY COVERAGE WAS DENIED BY EATON AND PETERBILT CLAIM…

SUSPENSION0000-00-00

TL* THE CONTACT OWNS A 2015 PETERBILT 579. WHILE DRIVING 55 MPH, THE DRIVER NOTICED SMOKE COMING FROM THE PASSENGER SIDE OF THE VEHICLE. UPON FURTHER INSPECTION, THE DRIVER NOTICED THAT THE FRONT PASSENGER SIDE AXLE WAS ON FIRE. THE DRIVER WAS ABLE TO EXTINGUISH THE FIRE. IN ADDI…

Fire

Related

Frequently Asked Questions

Are these Peterbilt 579 2015 complaints verified by NHTSA?
NHTSA collects complaints from owners but does NOT verify each one. The complaints below are unfiltered owner reports — useful for spotting patterns, but a single complaint doesn't prove a defect. Pay attention to: (1) volume of complaints on the same component, (2) consistency of described symptoms, and (3) whether NHTSA has opened a formal investigation or issued a recall on the same component. If a component appears in 5+% of complaints, that's usually a real pattern worth taking seriously.
Should I avoid buying a 2015 Peterbilt 579 based on these complaints?
It depends on the components reported. 4 complaints across roughly tens of thousands of trucks of this model year is a light signal. Compare against other model years of the same truck — if 2022 has 3x more complaints than 2020 or 2024, that specific year has issues. Also check whether the most-reported component is something you can preventively address (e.g., DEF system issues can be mitigated with quality fluid + dealer software updates).
Have any of these complaints led to recalls on the 2015 Peterbilt 579?
Not currently. Owner complaints don't automatically trigger recalls — NHTSA reviews complaint patterns and opens investigations when warranted. Recalls usually happen when a complaint pattern correlates with documented field failures or safety incidents. Even without recalls, repeated complaints on the same component is signal worth noting in your purchase decision.
How do I file my own complaint about a Peterbilt truck?
Visit NHTSA.gov/file-complaint. You'll need: your VIN, the date of incident, description of what happened, and component affected (drivetrain, brakes, etc.). Filing takes ~10 minutes and adds your data point to the public record. This is the input that triggers NHTSA investigations. For commercial trucks, fleet operators reporting issues at scale (10+ similar reports) often accelerate NHTSA's review timeline.
What's the most expensive complaint pattern on the 2015 Peterbilt 579?
Based on the complaint data: the top reported issue is 'POWER TRAIN' with 1 reports. Depending on the specific failure mode, this can range from a few hundred dollars (sensor replacement) to several thousand (transmission rebuild, DPF replacement, engine work). The complaint pattern alone won't tell you cost — check the symptoms described for hints about the actual root cause. Most commercial-truck complaints describe symptoms ($1,500–$5,000 repair range is typical), not catastrophic failures.

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