A 2021 Peterbilt 579 averages $30,000 today, with most selling between $10,000 and $39,990. ForCar prices the Peterbilt 579 from real US listings across 5 model years ($24,500–$73,000) — trade-in, private-party and dealer, adjusted for mileage. Free, no signup.
A 2015 Peterbilt 579 still asks 243% of what a 2021 one does — that's how much value it holds after 6 years. Among 20 pickups we price, that ranks #1, above the 60% class median. The steepest single-year drop comes at year 7 (−46.6%). Calculated from 19 listings.
Peterbilt 579 value by year
What a Peterbilt 579 is worth at each model year, from real US listings — the low (trade-in), median (private-party) and high (dealer) price.
| Year | Trade-in | Median | Dealer | Listings |
|---|---|---|---|---|
| 2021 | $10,000 | $39,990 | 3 | |
| 2018 | $24,500 | $24,500 | 3 | |
| 2017 | $25,950 | $40,000 | 4 | |
| 2015 | $73,000 | $73,000 | 3 | |
| 2014 | $38,950 | $38,950 | 6 |
How the Peterbilt 579 depreciates
Median market price by model year — how a Peterbilt 579 loses (or holds) value as it ages, from real listings. See how it tracks against the typical depreciation curve by age:
The newest Peterbilt 579 averages $30,000; a 7-year-older one runs about $38,950 — roughly -30% lost over 7 years. The steepest drop is usually in the first few years.
Does the Peterbilt 579 hold value better than its rivals?
Every pickup we price, ranked by how much of its 2021 price a 2015 car still asks. Higher is better — the Peterbilt 579 sits at #1 of 20, against a class median of 60%.
The Peterbilt 579 market right now
What the market asks for a Peterbilt 579 at each model year — the median of 33 real listings we track. Pro plots every individual listing on this chart.
Adjust your Peterbilt 579 value for mileage
Pick a model year and enter your odometer — see what your exact Peterbilt 579 is worth on today's market.
Trade-in, private-party & dealer price
Every Peterbilt 579 has three prices. Our low–median–high range maps to what a dealer pays you, what you'd get selling it yourself, and what a lot charges — compare with current used-market prices across all models.
For a 2021 Peterbilt 579: a dealer trade-in offer is around $10,000, selling private-party nets about $30,000, and a lot asks near $39,990 — a $29,990 spread on the same car.
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Get an exact Peterbilt 579 value by VIN
Trim, engine and options move the value. Decode your Peterbilt 579's VIN free to pin the exact build, then check its market value.
More on the Peterbilt 579
Peterbilt 579 value FAQ
How much is a Peterbilt 579 worth?
A 2021 Peterbilt 579 averages $30,000 today (roughly $10,000–$39,990). Value depends on the year and mileage — see the table above for every model year, or add your mileage for an exact number.
Does mileage change the Peterbilt 579 value?
Yes — higher mileage lowers value. Enter your odometer reading in the mileage tool above to adjust the estimate from the model-year average.
Is the Peterbilt 579 value free?
Yes, every estimate is free with no signup, from real US market listings.
How is this calculated?
ForCar aggregates real asking prices for the Peterbilt 579 from current US listings into the low (10th percentile), median and high (90th percentile) price per model year.
Which Peterbilt 579 year is the best value?
See the value-by-year table and depreciation above — older years cost less but the newest years hold value best. The sweet spot is usually a few years old, where the steepest depreciation has already happened.
Is this a free Peterbilt 579 Blue Book alternative?
Yes. ForCar is a free, no-signup alternative to Kelley Blue Book and NADA — instead of a private formula, you see what Peterbilt 579s are actually listed for right now, by year and mileage.
Mark ForCar as a preferred source and our data shows up first in your Google results. One click, no account.