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 Boulder, Colorado

Used 2020 Volvo VNR Volvo D13 Semi Trucks / Tractors

$42,000

speed 454,009 mi

sell

Key features

D13
6x4
Conventional Cab

location_on

Penske Used Trucks

Scranton, PA (1,541.9 mi)

Used 2020 International LT Cummins X15 Semi Trucks / Tractors

$57,750

speed 423,781 mi

sell

Key features

X15
SBA 6x4

location_on

Penske Used Trucks

Tampa, FL (1,542.4 mi)

Used 2020 Freightliner Cascadia - photo 1

Used 2020 Freightliner Cascadia - photo 2

Used 2020 Freightliner Cascadia Cummins X15 Day Cab Truck

$51,000

speed 425,743 mi

location_on

Penske Used Trucks

Tampa, FL (1,542.4 mi)

Used 2023 Volvo VNR Volvo D13 Semi Trucks / Tractors

$52,000

speed 486,088 mi

sell

Key features

D13
6x2
Conventional Cab

location_on

Penske Used Trucks

Tampa, FL (1,542.4 mi)

Used 2020 International LT Cummins X15 Semi Trucks / Tractors

$55,750

speed 459,886 mi

sell

Key features

X15
SBA 6x4

location_on

Penske Used Trucks

Tampa, FL (1,542.4 mi)

Used 2020 Freightliner Cascadia Cummins X15 Day Cab Truck

$52,250

speed 390,321 mi

location_on

Penske Used Trucks

Tampa, FL (1,542.4 mi)

Used 2020 Freightliner M2 106 Cummins L9 Day Cab Truck

$55,250

speed 149,717 mi

location_on

Penske Used Trucks

Tampa, FL (1,542.4 mi)

Used 2020 International LT Cummins X15 Semi Trucks / Tractors

$58,000

speed 420,796 mi

sell

Key features

X15
SBA 6x4

location_on

Penske Used Trucks

Tampa, FL (1,542.4 mi)

Used 2020 Freightliner Cascadia Detroit DD13 Semi Trucks / Tractors

$44,500

speed 426,369 mi

sell

Key features

DD13
6x4
Day Cab

location_on

Penske Used Trucks

Tampa, FL (1,542.4 mi)

Used 2019 Freightliner Cascadia - photo 1

Used 2019 Freightliner Cascadia - photo 2

Used 2019 Freightliner Cascadia Detroit DD13 Day Cab Truck

$46,250

speed 200,000 mi

location_on

Penske Used Trucks

Tampa, FL (1,542.4 mi)

Used 2020 Freightliner Cascadia Detroit DD13 Semi Trucks / Tractors

$50,750

speed 354,149 mi

sell

Key features

DD13
6x4
Day Cab

location_on

Penske Used Trucks

Tampa, FL (1,542.4 mi)

Used 2022 International LT Cummins X15 Semi Trucks / Tractors

$84,250

speed 281,651 mi

sell

Key features

X15
SBA 6x4

location_on

Penske Used Trucks

Tampa, FL (1,542.4 mi)

Used 2019 Freightliner Cascadia Detroit DD15AT Day Cab Truck

$37,750

speed 610,072 mi

location_on

Penske Used Trucks

Tampa, FL (1,542.4 mi)

Used 2024 Volvo VNL Volvo D13 TC Semi Trucks / Tractors

$92,000

speed 650,257 mi

sell

Key features

D13 TC
6x4

location_on

Penske Used Trucks

Tampa, FL (1,542.4 mi)

Used 2021 Freightliner Cascadia - photo 1

Used 2021 Freightliner Cascadia - photo 2

Used 2021 Freightliner Cascadia Detroit DD13 Day Cab Truck

$67,000

speed 280,866 mi

location_on

Penske Used Trucks

Tampa, FL (1,542.4 mi)

Used 2024 Volvo VNL Volvo D13 TC Semi Trucks / Tractors

$100,250

speed 557,803 mi

sell

Key features

D13 TC
6x4

location_on

Penske Used Trucks

Tampa, FL (1,542.4 mi)

Used 2020 Freightliner Cascadia Detroit DD13 Semi Trucks / Tractors

$54,250

speed 337,302 mi

sell

Key features

DD13
6x4
Day Cab

location_on

Penske Used Trucks

Tampa, FL (1,542.4 mi)

Used 2019 Freightliner Cascadia Detroit DD13 Day Cab Truck

$46,250

speed 133,846 mi

location_on

Penske Used Trucks

Tampa, FL (1,542.4 mi)

Used 2019 Freightliner Cascadia Detroit DD13 Day Cab Truck

$45,250

speed 249,902 mi

location_on

Penske Used Trucks

Tampa, FL (1,542.4 mi)

Used 2020 International LT Cummins X15 Semi Trucks / Tractors

$54,000

speed 486,541 mi

sell

Key features

X15
SBA 6x4

location_on

Penske Used Trucks

Tampa, FL (1,542.4 mi)

Used 2023 Volvo VNR Volvo D13 Semi Trucks / Tractors

$45,000

speed 542,499 mi

sell

Key features

D13
6x2
Conventional Cab

location_on

Penske Used Trucks

Tampa, FL (1,542.4 mi)

Used 2020 Freightliner Cascadia Detroit DD13 Semi Trucks / Tractors

$46,250

speed 611,349 mi

sell

Key features

DD13
6x4
Sleeper Cab

location_on

Penske Used Trucks

Tampa, FL (1,542.4 mi)

Used 2019 Freightliner Cascadia Detroit DD13 Day Cab Truck

$46,750

speed 472,368 mi

location_on

Penske Used Trucks

Tampa, FL (1,542.4 mi)

Used 2020 International LT Cummins X15 Semi Trucks / Tractors

$57,250

speed 431,298 mi

sell

Key features

X15
SBA 6x4

location_on

Penske Used Trucks

Tampa, FL (1,542.4 mi)

Used 2020 Freightliner Cascadia Cummins X15 Day Cab Truck

$66,250

speed 242,371 mi

location_on

Penske Used Trucks

Tampa, FL (1,542.4 mi)

Used 2020 Freightliner Cascadia Detroit DD13 Day Cab Truck

$52,000

speed 222,558 mi

location_on

Penske Used Trucks

Tampa, FL (1,542.4 mi)

Used 2020 Freightliner Cascadia Detroit DD13 Day Cab Truck

$59,750

speed 226,777 mi

location_on

Penske Used Trucks

Tampa, FL (1,542.4 mi)

Used 2021 Freightliner Cascadia Detroit DD13 Day Cab Truck

$71,500

speed 230,546 mi

location_on

Penske Used Trucks

Tampa, FL (1,542.4 mi)

Used 2020 Freightliner Cascadia Detroit DD13 Semi Trucks / Tractors

$54,000

speed 342,824 mi

sell

Key features

DD13
6x4
Day Cab

location_on

Penske Used Trucks

Tampa, FL (1,542.4 mi)

Used 2019 Freightliner Cascadia Detroit DD13 Day Cab Truck

$43,000

speed 262,377 mi

location_on

Penske Used Trucks

Tampa, FL (1,542.4 mi)

Semi Trucks for Sale near Boulder, Colorado

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Used 2020 Volvo VNR Volvo D13 Semi Trucks / Tractors

Used 2020 International LT Cummins X15 Semi Trucks / Tractors

Used 2020 Freightliner Cascadia Cummins X15 Day Cab Truck

Used 2023 Volvo VNR Volvo D13 Semi Trucks / Tractors

Used 2020 International LT Cummins X15 Semi Trucks / Tractors

Used 2020 Freightliner Cascadia Cummins X15 Day Cab Truck

Used 2020 Freightliner M2 106 Cummins L9 Day Cab Truck

Used 2020 International LT Cummins X15 Semi Trucks / Tractors

Used 2020 Freightliner Cascadia Detroit DD13 Semi Trucks / Tractors

Used 2019 Freightliner Cascadia Detroit DD13 Day Cab Truck

Used 2020 Freightliner Cascadia Detroit DD13 Semi Trucks / Tractors

Used 2022 International LT Cummins X15 Semi Trucks / Tractors

Used 2019 Freightliner Cascadia Detroit DD15AT Day Cab Truck

Used 2024 Volvo VNL Volvo D13 TC Semi Trucks / Tractors

Used 2021 Freightliner Cascadia Detroit DD13 Day Cab Truck

Used 2024 Volvo VNL Volvo D13 TC Semi Trucks / Tractors

Used 2020 Freightliner Cascadia Detroit DD13 Semi Trucks / Tractors

Used 2019 Freightliner Cascadia Detroit DD13 Day Cab Truck

Used 2019 Freightliner Cascadia Detroit DD13 Day Cab Truck

Used 2020 International LT Cummins X15 Semi Trucks / Tractors

Used 2023 Volvo VNR Volvo D13 Semi Trucks / Tractors

Used 2020 Freightliner Cascadia Detroit DD13 Semi Trucks / Tractors

Used 2019 Freightliner Cascadia Detroit DD13 Day Cab Truck

Used 2020 International LT Cummins X15 Semi Trucks / Tractors

Used 2020 Freightliner Cascadia Cummins X15 Day Cab Truck

Used 2020 Freightliner Cascadia Detroit DD13 Day Cab Truck

Used 2020 Freightliner Cascadia Detroit DD13 Day Cab Truck

Used 2021 Freightliner Cascadia Detroit DD13 Day Cab Truck

Used 2020 Freightliner Cascadia Detroit DD13 Semi Trucks / Tractors

Used 2019 Freightliner Cascadia Detroit DD13 Day Cab Truck

Frequently Asked Questions about Semi Trucks / Tractors

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