What's My Semi Truck Worth?

If you own a semi truck and are thinking about selling, the first question is always the same: what's it actually worth?

The honest answer is that no single number applies to every truck. A commercial truck's value depends on a combination of specifications, condition, and what the market is doing right now. This guide breaks down the factors that matter most so you can walk into a sale with realistic expectations.

The Factors That Determine Semi-Truck Value

Year, Make, and Model

Newer trucks generally carry more value, but age alone doesn't tell the story. A well-maintained 2018 Freightliner Cascadia can be worth more than a rough 2021 model with the same specs. Make and model matter because some brands hold their value better and are easier to resell — Freightliner, Peterbilt, and Kenworth all have strong secondary markets.

Mileage

Mileage is one of the single biggest value drivers. A truck with 400,000 miles is typically worth more than the same truck with 900,000 miles, because major components — engine, transmission, aftertreatment system — have more usable life left. For a deeper dive, read How Mileage Affects Semi-Truck Value.

Engine and Transmission

The drivetrain configuration matters. A Detroit DD15 with 455 HP and an Eaton automated manual transmission is valued differently than a truck with a 500 HP Cummins and a 13-speed manual. Buyers also look at whether the engine has been overhauled and when.

Cab Type

Day cabs and sleeper trucks serve different markets. A high-roof sleeper with a 72-inch bunk has a different buyer pool than a day cab running local routes. Sleeper size and configuration affect who the truck appeals to and what it's worth.

Condition

This is where many sellers get surprised. A truck that looks clean but has a check engine light, a DPF that needs cleaning, or tires at 4/32" will be valued lower than one that's road-ready. Honest condition assessment — including known mechanical issues — helps you get a realistic offer faster.

Specifications and Features

APU (auxiliary power unit), aluminum wheels, liftgate, wet kit, custom gear ratios — these all affect value. Some add real resale value; others matter only to specific buyers. For model-specific details, see our manufacturer guides like Sell My Freightliner or Sell My Peterbilt.

Market Demand

The used truck market fluctuates. Freight volumes, fuel prices, new truck supply, and fleet replacement cycles all push values up or down. A truck that was worth $60,000 a year ago may be worth more or less today depending on conditions.

Why Online "Calculators" Fall Short

You'll find websites that promise instant truck value estimates. Most pull from historical averages and don't account for your specific truck's specs, condition, or location. They can give you a ballpark, but they can't tell you what someone will actually pay you today.

A real purchase evaluation requires:

• Your truck's VIN (to decode exact specs)
• Mileage and condition
• Engine and transmission details
• Location (transport costs affect net value)
• Photos of the truck's actual condition

How to Get a Real Value for Your Truck

The most accurate way to find out what your truck is worth is to submit it for a purchase evaluation. A real buyer will decode your VIN, review your specs and condition, look at current market data, and give you an offer based on your specific truck — not a generic average.

You don't have to accept the offer, and there's no obligation. It's the fastest way to get a real number.