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 2018 Freightliner Cascadia - photo 1

Used 2018 Freightliner Cascadia - photo 2

contact for price

location_on

DeBary Truck Sales

Sanford, FL (1,561.2 mi)

(407) 374-1475

Used 2019 Freightliner Cascadia Detroit DD13 Day Cab Truck

contact for price

speed 114,981 mi

location_on

DeBary Truck Sales

Sanford, FL (1,561.2 mi)

(407) 374-1475

Used 2004 Freightliner M2 106 Mercedes-Benz MBE-900 Day Cab Truck

$5,950

location_on

DeBary Truck Sales

Sanford, FL (1,561.2 mi)

(407) 374-1475

Used 2007 Freightliner M2 106 Mercedes-Benz MBE-900 Day Cab Truck

$5,950

location_on

DeBary Truck Sales

Sanford, FL (1,561.2 mi)

(407) 374-1475

Used 2019 Freightliner Cascadia Detroit DD13 Day Cab Truck

$19,900

location_on

DeBary Truck Sales

Sanford, FL (1,561.2 mi)

(407) 374-1475

$77,750

speed 494,311 mi

sell

Key features

D13
6x4

location_on

Penske Used Trucks

New Castle, DE (1,563 mi)

(844) 572-5838

Used 2018 Freightliner Cascadia Detroit DD13 Day Cab Truck

$48,000

speed 257,750 mi

location_on

Penske Used Trucks

New Castle, DE (1,563 mi)

(844) 572-5838

Used 2021 Freightliner Cascadia - photo 1

Used 2021 Freightliner Cascadia - photo 2

Used 2021 Freightliner Cascadia Detroit DD13 Day Cab Truck

$57,500

speed 290,855 mi

location_on

Penske Used Trucks

Bethlehem, PA (1,564 mi)

(844) 572-5838

Used 2018 Freightliner Cascadia Detroit DD13 Day Cab Truck

$36,500

speed 495,202 mi

location_on

Penske Used Trucks

Bethlehem, PA (1,564 mi)

(844) 572-5838

Used 2023 International LT Cummins X15 Semi Trucks / Tractors

$47,000

speed 700,100 mi

sell

Key features

X15
SBA 6x4

location_on

Penske Used Trucks

Bethlehem, PA (1,564 mi)

(844) 572-5838

Used 2022 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

$57,995

speed 660,117 mi

location_on

Ryder Used Trucks

Orlando, FL (1,565.4 mi)

(855) 459-6420

Used 2022 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

$58,660

speed 681,561 mi

location_on

Ryder Used Trucks

Orlando, FL (1,565.4 mi)

(855) 459-6420

Used 2020 Freightliner Cascadia - photo 1

Used 2020 Freightliner Cascadia - photo 2

Used 2020 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

$82,881

speed 273,131 mi

location_on

Ryder Used Trucks

Orlando, FL (1,565.4 mi)

(855) 459-6420

Used 2020 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

$54,227

speed 630,810 mi

location_on

Ryder Used Trucks

Orlando, FL (1,565.4 mi)

(855) 459-6420

Used 2022 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

$58,397

speed 695,584 mi

location_on

Ryder Used Trucks

Orlando, FL (1,565.4 mi)

(855) 459-6420

Used 2022 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

$56,501

speed 707,981 mi

location_on

Ryder Used Trucks

Orlando, FL (1,565.4 mi)

(855) 459-6420

Used 2021 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

$51,771

speed 751,661 mi

location_on

Ryder Used Trucks

Orlando, FL (1,565.4 mi)

(855) 459-6420

Used 2022 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

$52,832

speed 782,681 mi

location_on

Ryder Used Trucks

Orlando, FL (1,565.4 mi)

(855) 459-6420

Used 2022 Freightliner Cascadia Detroit Diesel DD15 Semi Trucks / Tractors

$59,995

speed 633,172 mi

sell

Key features

DD15 GHG'21 455/1500
6x4
Sleeper Cab

location_on

Ryder Used Trucks

Orlando, FL (1,565.4 mi)

(855) 459-6420

Used 2022 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

$59,793

speed 680,073 mi

location_on

Ryder Used Trucks

Orlando, FL (1,565.4 mi)

(855) 459-6420

Used 2022 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

$50,995

speed 773,641 mi

location_on

Ryder Used Trucks

Orlando, FL (1,565.4 mi)

(855) 459-6420

Used 2022 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

$64,860

speed 612,663 mi

location_on

Ryder Used Trucks

Orlando, FL (1,565.4 mi)

(855) 459-6420

Semi Trucks for Sale near Boulder, Colorado

Filters

4,800 results

Applied

Location

Condition

Listing Type

Used 2018 Freightliner Cascadia Detroit DD13 Day Cab Truck

Used 2016 Mack CXU600 Day Cab Truck

Used 2022 Kenworth T680 Cummins ISX / X15 Sleeper Truck

Used 2019 Freightliner Cascadia Detroit DD13 Day Cab Truck

Used 2019 Freightliner Cascadia Detroit DD13 Day Cab Truck

Used 2004 Freightliner M2 106 Mercedes-Benz MBE-900 Day Cab Truck

Used 2007 Freightliner M2 106 Mercedes-Benz MBE-900 Day Cab Truck

Used 2019 Freightliner Cascadia Detroit DD13 Day Cab Truck

Used 2019 Freightliner Cascadia Semi Trucks / Tractors

Used 2022 Freightliner Cascadia Detroit DD15AT Sleeper Truck

Used 2022 Freightliner Cascadia Detroit DD13 Sleeper Truck

Used 2018 Freightliner Cascadia Detroit DD13 Day Cab Truck

Used 2019 Freightliner Cascadia Detroit DD13 Day Cab Truck

Used 2021 Volvo VNL Volvo D13 Semi Trucks / Tractors

Used 2018 Freightliner Cascadia Detroit DD13 Day Cab Truck

Used 2021 Freightliner Cascadia Detroit DD13 Day Cab Truck

Used 2018 Freightliner Cascadia Detroit DD13 Day Cab Truck

Used 2023 International LT Cummins X15 Semi Trucks / Tractors

Used 2022 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

Used 2022 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

Used 2020 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

Used 2020 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

Used 2022 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

Used 2022 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

Used 2021 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

Used 2022 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

Used 2022 Freightliner Cascadia Detroit Diesel DD15 Semi Trucks / Tractors

Used 2022 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

Used 2022 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

Used 2022 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

Frequently Asked Questions about Semi Trucks / Tractors

Most Popular Work Truck and Van Inventory

Right Truck. Right Place. Right Time.