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.

Used Semi Trucks / Trucks for Sale in Colorado

Used 2023 Kenworth T880 Paccar MX/MX-13 Semi Trucks / Tractors

$84,950

speed 256,851 mi

sell

Key features

MX13 EPA21
6x4

location_on

MHC Internet Truck Sales

Denver, CO

Used 2023 Kenworth T880 Paccar MX/MX-13 Semi Trucks / Tractors

$84,950

speed 261,712 mi

sell

Key features

MX13 EPA21
6x4

location_on

MHC Internet Truck Sales

Denver, CO

Used 2023 Kenworth T880 Paccar MX/MX-13 Day Cab Truck

$92,950

speed 196,311 mi

location_on

MHC Internet Truck Sales

Denver, CO

Used 2021 International LT Cummins X15, Signature Sleeper Truck

$50,974

speed 554,164 mi

location_on

Ryder Used Trucks

Commerce City, CO

Used 2021 International LT Cummins X15, Signature Sleeper Truck

$40,258

speed 689,902 mi

location_on

Ryder Used Trucks

Commerce City, CO

Used 2022 Volvo VNL Volvo D13 Sleeper Truck

$79,950

speed 471,486 mi

location_on

American Motors

Commerce City, CO

Used 2020 International LT Cummins X15, Signature Day Cab Truck

$38,995

speed 479,547 mi

location_on

Ryder Used Trucks

Commerce City, CO

Used 2021 International LT Cummins X15, Signature Sleeper Truck

$45,955

speed 626,596 mi

location_on

Ryder Used Trucks

Commerce City, CO

Used 2020 Freightliner Cascadia - photo 1

Used 2020 Freightliner Cascadia - photo 2

Used 2020 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

contact for price

speed 879,980 mi

location_on

Ryder Used Trucks

Commerce City, CO

Used 2019 Freightliner Cascadia - photo 1

Used 2019 Freightliner Cascadia - photo 2

Used 2019 Freightliner Cascadia Detroit Diesel DD15 Day Cab Truck

$37,338

speed 569,804 mi

location_on

Ryder Used Trucks

Commerce City, CO

Used 2020 Freightliner Cascadia Detroit DD13 Day Cab Truck

$37,950

speed 299,235 mi

location_on

American Motors

Commerce City, CO

Used 2023 Kenworth T880 Paccar MX/MX-13 Day Cab Truck

$89,950

speed 244,998 mi

location_on

MHC Internet Truck Sales

Denver, CO

Used 2023 Freightliner Cascadia - photo 1

Used 2023 Freightliner Cascadia - photo 2

Used 2023 Freightliner Cascadia Detroit DD15AT Sleeper Truck

$52,250

speed 830,157 mi

location_on

Penske Used Trucks

Aurora, CO

Used 2021 International LT Cummins X15, Signature Sleeper Truck

$48,914

speed 582,613 mi

location_on

Ryder Used Trucks

Commerce City, CO

Used 2021 International LT Cummins X15, Signature Sleeper Truck

$40,385

speed 688,490 mi

location_on

Ryder Used Trucks

Commerce City, CO

Used 2019 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

$47,688

speed 704,995 mi

location_on

Ryder Used Trucks

Commerce City, CO

Used 2020 International LoneStar - photo 1

Used 2020 International LoneStar - photo 2

Used 2020 International LoneStar Cummins X15, Signature Day Cab Truck

$59,950

speed 616,622 mi

location_on

American Motors

Commerce City, CO

Used 2022 Kenworth W990 Paccar MX/MX-13 Semi Trucks / Tractors

$119,950

speed 195,655 mi

sell

Key features

MX13
6x4

location_on

American Motors

Commerce City, CO

Used 2002 Sterling L9500 Caterpillar C15 Day Cab Truck

$54,950

speed 57,796 mi

location_on

American Motors

Commerce City, CO

Used 2021 Peterbilt 579 Paccar MX/MX-13 Sleeper Truck

$49,950

speed 482,481 mi

location_on

MHC Internet Truck Sales

Denver, CO

Used 2022 Kenworth T680 Paccar MX/MX-13 Sleeper Truck

$79,500

speed 347,995 mi

location_on

MHC Internet Truck Sales

Pueblo, CO

Used 2023 Kenworth T880 Paccar MX/MX-13 Day Cab Truck

$89,950

speed 221,966 mi

location_on

MHC Internet Truck Sales

Denver, CO

Used 2021 Freightliner Cascadia - photo 1

Used 2021 Freightliner Cascadia - photo 2

Used 2021 Freightliner Cascadia Detroit DD13 Day Cab Truck

$40,000

speed 576,579 mi

location_on

Penske Used Trucks

Aurora, CO

Used 2023 Freightliner Cascadia Detroit DD13 Sleeper Truck

$52,000

speed 836,529 mi

location_on

Penske Used Trucks

Aurora, CO

Used 2021 Freightliner Cascadia Detroit DD13 Day Cab Truck

$42,250

speed 557,230 mi

location_on

Penske Used Trucks

Aurora, CO

Used 2023 Freightliner Cascadia Detroit DD13 Sleeper Truck

$47,000

speed 884,505 mi

location_on

Penske Used Trucks

Denver, CO

Used 2021 Freightliner Cascadia Detroit DD13 Day Cab Truck

$43,000

speed 550,725 mi

location_on

Penske Used Trucks

Aurora, CO

Used 2021 Freightliner Cascadia Detroit DD13 Day Cab Truck

$51,500

speed 501,114 mi

location_on

Penske Used Trucks

Aurora, CO

Used 2020 Freightliner Cascadia Detroit DD13 Day Cab Truck

$34,950

speed 547,471 mi

location_on

American Motors

Commerce City, CO

Used 2020 Freightliner Cascadia Detroit DD13 Day Cab Truck

$34,950

speed 534,163 mi

location_on

American Motors

Commerce City, CO

Used Semi Trucks / Trucks for Sale in Colorado

Filters

147 results

Applied

Location

Condition

Listing Type

Used 2023 Kenworth T880 Paccar MX/MX-13 Semi Trucks / Tractors

Used 2023 Kenworth T880 Paccar MX/MX-13 Semi Trucks / Tractors

Used 2023 Kenworth T880 Paccar MX/MX-13 Day Cab Truck

Used 2021 International LT Cummins X15, Signature Sleeper Truck

Used 2021 International LT Cummins X15, Signature Sleeper Truck

Used 2022 Volvo VNL Volvo D13 Sleeper Truck

Used 2020 International LT Cummins X15, Signature Day Cab Truck

Used 2021 International LT Cummins X15, Signature Sleeper Truck

Used 2020 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

Used 2019 Freightliner Cascadia Detroit Diesel DD15 Day Cab Truck

Used 2020 Freightliner Cascadia Detroit DD13 Day Cab Truck

Used 2023 Kenworth T880 Paccar MX/MX-13 Day Cab Truck

Used 2023 Freightliner Cascadia Detroit DD15AT Sleeper Truck

Used 2021 International LT Cummins X15, Signature Sleeper Truck

Used 2021 International LT Cummins X15, Signature Sleeper Truck

Used 2019 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

Used 2020 International LoneStar Cummins X15, Signature Day Cab Truck

Used 2022 Kenworth W990 Paccar MX/MX-13 Semi Trucks / Tractors

Used 2002 Sterling L9500 Caterpillar C15 Day Cab Truck

Used 2021 Peterbilt 579 Paccar MX/MX-13 Sleeper Truck

Used 2022 Kenworth T680 Paccar MX/MX-13 Sleeper Truck

Used 2023 Kenworth T880 Paccar MX/MX-13 Day Cab Truck

Used 2021 Freightliner Cascadia Detroit DD13 Day Cab Truck

Used 2023 Freightliner Cascadia Detroit DD13 Sleeper Truck

Used 2021 Freightliner Cascadia Detroit DD13 Day Cab Truck

Used 2023 Freightliner Cascadia Detroit DD13 Sleeper Truck

Used 2021 Freightliner Cascadia Detroit DD13 Day Cab Truck

Used 2021 Freightliner Cascadia Detroit DD13 Day Cab Truck

Used 2020 Freightliner Cascadia Detroit DD13 Day Cab Truck

Used 2020 Freightliner Cascadia Detroit DD13 Day Cab Truck

Frequently Asked Questions about Semi Trucks / Tractors

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