A 1998 Peterbilt 378 averages $58,000 today, with most selling between $57,000 and $58,000. ForCar prices the Peterbilt 378 from real US listings across 1 model years ($58,000–$58,000) — trade-in, private-party and dealer, adjusted for mileage. Free, no signup.
Peterbilt 378 value by year
What a Peterbilt 378 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 |
|---|---|---|---|---|
| 1998 | $57,000 | $58,000 | 21 |
Adjust your Peterbilt 378 value for mileage
Pick a model year and enter your odometer — see what your exact Peterbilt 378 is worth on today's market.
Trade-in, private-party & dealer price
Every Peterbilt 378 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 1998 Peterbilt 378: a dealer trade-in offer is around $57,000, selling private-party nets about $58,000, and a lot asks near $58,000 — a $1,000 spread on the same car.
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Get an exact Peterbilt 378 value by VIN
Trim, engine and options move the value. Decode your Peterbilt 378's VIN free to pin the exact build, then check its market value.
More on the Peterbilt 378
Peterbilt 378 value FAQ
How much is a Peterbilt 378 worth?
A 1998 Peterbilt 378 averages $58,000 today (roughly $57,000–$58,000). 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 378 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 378 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 378 from current US listings into the low (10th percentile), median and high (90th percentile) price per model year.
Is this a free Peterbilt 378 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 378s are actually listed for right now, by year and mileage.