What are the most popular brands of semi trucks in the US?

The most popular semi truck brands in the US, known for their reliability, performance, and widespread use, include: Freightliner: Explore our current Freightliner semi truck listings here. International: Find your next International semi truck here. Peterbilt: Browse all available Peterbilt semi trucks for sale. Kenworth: View our selection of Kenworth semi trucks. Volvo: Discover Volvo semi trucks currently available. Mack: See our inventory of Mack semi trucks.

How many miles is too many on a used semi truck?

A well-maintained semi truck engine is built to run 750,000 to over 1,000,000 miles before a major overhaul. Mileage alone isn't the right filter — service history, engine condition, and whether the truck has had any major powertrain work matter more. A 600,000-mile truck with documented maintenance and recent engine work can be a better buy than a 400,000-mile truck with no service records.

Should I buy a day cab or sleeper semi truck?

It depends on your operation. If your routes are regional or local and drivers return home nightly, a day cab is the more practical and cost-efficient choice — it's lighter, simpler, and less expensive to maintain. If you're running long-haul or OTR freight where drivers spend nights on the road, a sleeper provides the comfort and compliance with hours-of-service regulations that an OTR operation requires.

Can I search semi trucks by location on Comvoy?

Yes. Comvoy lets you filter semi truck listings by location so you can find trucks available near you or in a specific state — reducing transport costs and making it easier to inspect before you buy. You can also filter by make, model year, mileage, and price to narrow results to your exact spec.

How much weight can a semi truck carry?

The legal limit for a loaded semi-truck in the US is 80,000 pounds, though the actual capacity can vary depending on the truck and trailer configuration.

How many gears do semi trucks have?

They can have up to 18 gears, providing the necessary torque and power for hauling heavy loads efficiently.

How much fuel do semi trucks use?

Fuel efficiency varies depending on engine size, load weight, and driving conditions, but expect lower mpg than cars, typically around 5-8 mpg.

Do you need a special license to drive a semi truck?

Yes, a Commercial Driver's License (CDL) with specific endorsements is required to operate a semi-truck legally.

What are the challenges of being a truck driver?

Long hours on the road, loneliness, traffic congestion, and dealing with varying weather conditions are some of the challenges truck drivers face.

What kinds of trailers can semi trucks haul?

Semi trucks can haul many different types of trailers. The most commonly hauled trailers are dry vans, reefers, flatbeds, tankers, and lowboys.

Semi Trucks for Sale near Castle Rock, Colorado

Used 2020 Freightliner Cascadia - photo 1

Used 2020 Freightliner Cascadia - photo 2

Used 2020 Freightliner Cascadia Detroit DD15AT Sleeper Truck

$65,500

speed 518,105 mi

location_on

Penske Used Trucks

Atlanta, GA (1,199.8 mi)

Used 2020 Freightliner Cascadia Detroit DD15AT Day Cab Truck

$33,250

speed 625,415 mi

location_on

Penske Used Trucks

Atlanta, GA (1,199.8 mi)

Used 2022 Freightliner Cascadia - photo 1

Used 2022 Freightliner Cascadia - photo 2

Used 2022 Freightliner Cascadia Detroit DD15AT Sleeper Truck

$94,500

speed 392,914 mi

location_on

Penske Used Trucks

Atlanta, GA (1,199.8 mi)

Used 2020 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

$49,117

speed 730,120 mi

location_on

Ryder Used Trucks

Atlanta, GA (1,200.1 mi)

Used 2020 Freightliner Cascadia Detroit DD13 Day Cab Truck

$28,000

speed 740,251 mi

location_on

Ryder Used Trucks

Atlanta, GA (1,200.1 mi)

Used 2023 Freightliner Cascadia - photo 1

Used 2023 Freightliner Cascadia - photo 2

Used 2023 Freightliner Cascadia Detroit DD13 Day Cab Truck

$42,500

speed 812,110 mi

location_on

Ryder Used Trucks

Atlanta, GA (1,200.1 mi)

Used 2019 Freightliner Cascadia - photo 1

Used 2019 Freightliner Cascadia - photo 2

Used 2019 Freightliner Cascadia Detroit DD13 Semi Trucks / Tractors

$45,887

speed 224,733 mi

sell

Key features

DD13'17 450/1650
6x4
Day Cab

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Ryder Used Trucks

Atlanta, GA (1,200.1 mi)

New 2027 Volvo VNL Volvo D13 Sleeper Truck

contact for price

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Vanguard Truck Centers - Atlanta

Forest Park, GA (1,201.7 mi)

New 2027 Volvo VNL Volvo D13 Sleeper Truck

contact for price

location_on

Vanguard Truck Centers - Atlanta

Forest Park, GA (1,201.7 mi)

New 2027 Volvo VNR Volvo D13 Day Cab Truck

contact for price

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Vanguard Truck Centers - Atlanta

Forest Park, GA (1,201.7 mi)

New 2026 Volvo VNR Volvo D13 Day Cab Truck

contact for price

location_on

Vanguard Truck Centers - Atlanta

Forest Park, GA (1,201.7 mi)

New 2026 Volvo VNR Volvo D13 Day Cab Truck

contact for price

location_on

Vanguard Truck Centers - Atlanta

Forest Park, GA (1,201.7 mi)

Used 2021 Freightliner Cascadia - photo 1

Used 2021 Freightliner Cascadia - photo 2

Used 2021 Freightliner Cascadia Detroit DD13 Day Cab Truck

$46,750

speed 527,378 mi

location_on

Penske Used Trucks

Norcross, GA (1,201.5 mi)

Used 2021 Freightliner Cascadia Detroit DD13 Sleeper Truck

$65,250

speed 566,520 mi

location_on

Penske Used Trucks

Norcross, GA (1,201.5 mi)

Used 2021 Freightliner Cascadia Detroit DD15AT Day Cab Truck

$63,250

speed 332,806 mi

location_on

Penske Used Trucks

Norcross, GA (1,201.5 mi)

Used 2023 International LT Cummins X15 Semi Trucks / Tractors

$77,500

speed 429,044 mi

sell

Key features

X15
SBA 6x4

location_on

Penske Used Trucks

Norcross, GA (1,201.5 mi)

Used 2024 Freightliner Cascadia - photo 1

Used 2024 Freightliner Cascadia - photo 2

Used 2024 Freightliner Cascadia Detroit DD15 Sleeper Truck

$119,900

speed 311,081 mi

location_on

Vanguard Truck Centers - Atlanta

Forest Park, GA (1,201.7 mi)

Used 2023 Volvo VNL Volvo D13 Sleeper Truck

$84,900

speed 438,652 mi

location_on

Vanguard Truck Centers - Atlanta

Forest Park, GA (1,201.7 mi)

Used 2022 Kenworth T680 Paccar MX13 Sleeper Truck

$64,900

speed 340,000 mi

location_on

Vanguard Truck Centers - Atlanta

Forest Park, GA (1,201.7 mi)

Used 2016 Volvo VNL Volvo D16 Sleeper Truck

$74,500

speed 1,304,740 mi

location_on

Vanguard Truck Centers - Atlanta

Forest Park, GA (1,201.7 mi)

Used 2021 Volvo VNL Volvo D13 Sleeper Truck

$59,900

speed 542,000 mi

location_on

Vanguard Truck Centers - Atlanta

Forest Park, GA (1,201.7 mi)

Used 2024 Freightliner Cascadia Detroit DD15 Sleeper Truck

$134,900

speed 256,902 mi

location_on

Vanguard Truck Centers - Atlanta

Forest Park, GA (1,201.7 mi)

Used 2021 Volvo VNL Volvo D13 Sleeper Truck

$59,900

speed 574,883 mi

location_on

Vanguard Truck Centers - Atlanta

Forest Park, GA (1,201.7 mi)

Used 2020 Volvo VNL Volvo D13 Sleeper Truck

$54,900

speed 655,938 mi

location_on

Vanguard Truck Centers - Atlanta

Forest Park, GA (1,201.7 mi)

Used 2020 Volvo VNR Volvo D13 Sleeper Truck

$59,900

speed 430,633 mi

location_on

Vanguard Truck Centers - Atlanta

Forest Park, GA (1,201.7 mi)

Used 2026 Volvo VNL Volvo D13TC Sleeper Truck

$164,900

speed 186,973 mi

location_on

Vanguard Truck Centers - Atlanta

Forest Park, GA (1,201.7 mi)

Used 2020 Volvo VNL Volvo D13 Sleeper Truck

$54,900

speed 558,451 mi

location_on

Vanguard Truck Centers - Atlanta

Forest Park, GA (1,201.7 mi)

Used 2021 Volvo VNL Volvo D13 Sleeper Truck

$59,900

speed 579,703 mi

location_on

Vanguard Truck Centers - Atlanta

Forest Park, GA (1,201.7 mi)

Used 2024 Kenworth T680 Cummins X15 Sleeper Truck

$114,900

speed 240,235 mi

location_on

Vanguard Truck Centers - Atlanta

Forest Park, GA (1,201.7 mi)

Used 2021 Volvo VNL Volvo D13 Sleeper Truck

$54,900

speed 524,305 mi

location_on

Vanguard Truck Centers - Atlanta

Forest Park, GA (1,201.7 mi)

Semi Trucks for Sale near Castle Rock, Colorado

Filters

4,840 results

Applied

Location

Condition

Listing Type

Used 2020 Freightliner Cascadia Detroit DD15AT Sleeper Truck

Used 2020 Freightliner Cascadia Detroit DD15AT Day Cab Truck

Used 2022 Freightliner Cascadia Detroit DD15AT Sleeper Truck

Used 2020 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

Used 2020 Freightliner Cascadia Detroit DD13 Day Cab Truck

Used 2023 Freightliner Cascadia Detroit DD13 Day Cab Truck

Used 2019 Freightliner Cascadia Detroit DD13 Semi Trucks / Tractors

New 2027 Volvo VNL Volvo D13 Sleeper Truck

New 2027 Volvo VNL Volvo D13 Sleeper Truck

New 2027 Volvo VNR Volvo D13 Day Cab Truck

New 2026 Volvo VNR Volvo D13 Day Cab Truck

New 2026 Volvo VNR Volvo D13 Day Cab Truck

Used 2021 Freightliner Cascadia Detroit DD13 Day Cab Truck

Used 2021 Freightliner Cascadia Detroit DD13 Sleeper Truck

Used 2021 Freightliner Cascadia Detroit DD15AT Day Cab Truck

Used 2023 International LT Cummins X15 Semi Trucks / Tractors

Used 2024 Freightliner Cascadia Detroit DD15 Sleeper Truck

Used 2023 Volvo VNL Volvo D13 Sleeper Truck

Used 2022 Kenworth T680 Paccar MX13 Sleeper Truck

Used 2016 Volvo VNL Volvo D16 Sleeper Truck

Used 2021 Volvo VNL Volvo D13 Sleeper Truck

Used 2024 Freightliner Cascadia Detroit DD15 Sleeper Truck

Used 2021 Volvo VNL Volvo D13 Sleeper Truck

Used 2020 Volvo VNL Volvo D13 Sleeper Truck

Used 2020 Volvo VNR Volvo D13 Sleeper Truck

Used 2026 Volvo VNL Volvo D13TC Sleeper Truck

Used 2020 Volvo VNL Volvo D13 Sleeper Truck

Used 2021 Volvo VNL Volvo D13 Sleeper Truck

Used 2024 Kenworth T680 Cummins X15 Sleeper Truck

Used 2021 Volvo VNL Volvo D13 Sleeper Truck

Frequently Asked Questions about Semi Trucks / Tractors

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