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 Rockford, Illinois

Used 2020 Freightliner Cascadia - photo 1

Used 2020 Freightliner Cascadia - photo 2

Used 2020 Freightliner Cascadia Detroit DD13 Day Cab Truck

$45,250

speed 431,548 mi

location_on

Penske Used Trucks

Ocala, FL (991.1 mi)

(844) 572-5838

Used 2020 Freightliner Cascadia Detroit DD15AT Day Cab Truck

$47,250

speed 492,279 mi

location_on

Penske Used Trucks

Ocala, FL (991.1 mi)

(844) 572-5838

Used 2022 Freightliner Cascadia - photo 1

Used 2022 Freightliner Cascadia - photo 2

Used 2022 Freightliner Cascadia Detroit DD15AT Sleeper Truck

$72,250

speed 533,683 mi

location_on

Penske Used Trucks

Ocala, FL (991.1 mi)

(844) 572-5838

Used 2020 Freightliner Cascadia Detroit DD15AT Day Cab Truck

$35,000

speed 583,436 mi

location_on

Penske Used Trucks

Ocala, FL (991.1 mi)

(844) 572-5838

Used 2020 Freightliner Cascadia Detroit DD15AT Sleeper Truck

$49,750

speed 693,833 mi

location_on

Penske Used Trucks

Ocala, FL (991.1 mi)

(844) 572-5838

Used 2020 Freightliner Cascadia Detroit DD13 Day Cab Truck

$37,250

speed 570,557 mi

location_on

Penske Used Trucks

Ocala, FL (991.1 mi)

(844) 572-5838

Used 2022 Freightliner Cascadia Detroit DD13 Day Cab Truck

$54,750

speed 519,847 mi

location_on

Penske Used Trucks

Ocala, FL (991.1 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

$39,000

speed 526,400 mi

location_on

Penske Used Trucks

Ocala, FL (991.1 mi)

(844) 572-5838

Used 2020 Freightliner Cascadia Detroit DD13 Day Cab Truck

$54,750

speed 348,290 mi

location_on

Penske Used Trucks

Ocala, FL (991.1 mi)

(844) 572-5838

Used 2021 Freightliner Cascadia Detroit DD13 Day Cab Truck

$42,250

speed 492,410 mi

location_on

Penske Used Trucks

Ocala, FL (991.1 mi)

(844) 572-5838

Used 2021 Volvo VNR Volvo D13 Semi Trucks / Tractors

$85,250

speed 230,404 mi

sell

Key features

D13
6x4
Conventional Cab

location_on

Penske Used Trucks

Ocala, FL (991.1 mi)

(844) 572-5838

Used 2020 Freightliner Cascadia Detroit DD13 Day Cab Truck

$42,250

speed 518,852 mi

location_on

Penske Used Trucks

Ocala, FL (991.1 mi)

(844) 572-5838

Used 2021 Freightliner Cascadia Detroit DD13 Day Cab Truck

$60,250

speed 390,869 mi

location_on

Penske Used Trucks

Ocala, FL (991.1 mi)

(844) 572-5838

Used 2020 Freightliner Cascadia Detroit DD13 Day Cab Truck

$50,500

speed 422,425 mi

location_on

Penske Used Trucks

Ocala, FL (991.1 mi)

(844) 572-5838

Used 2021 Freightliner Cascadia Detroit DD15AT Day Cab Truck

$50,750

speed 487,239 mi

location_on

Penske Used Trucks

Ocala, FL (991.1 mi)

(844) 572-5838

Used 2022 Volvo VNL Volvo D13 TC Semi Trucks / Tractors

$80,250

speed 550,218 mi

sell

Key features

D13 TC
6x4

location_on

Penske Used Trucks

Ocala, FL (991.1 mi)

(844) 572-5838

Used 2008 Kenworth T300 Paccar PX-8 Day Cab Truck

$14,777

speed 174,757 mi

location_on

Randy Adams Inc.

New Braunfels, TX (1,003.8 mi)

(830) 625-5171

Used 2020 Freightliner Cascadia Detroit DD13 Day Cab Truck

$44,750

speed 437,448 mi

location_on

Penske Used Trucks

Schertz, TX (1,016.5 mi)

(844) 572-5838

Used 2020 Freightliner Cascadia Detroit DD13 Day Cab Truck

$46,000

speed 415,076 mi

location_on

Penske Used Trucks

Schertz, TX (1,016.5 mi)

(844) 572-5838

Used 2020 Freightliner Cascadia Detroit DD13 Day Cab Truck

$44,750

speed 436,820 mi

location_on

Penske Used Trucks

Schertz, TX (1,016.5 mi)

(844) 572-5838

New 2026 Freightliner Cascadia - photo 1

New 2026 Freightliner Cascadia - photo 2

$52,900

speed 521,593 mi

sell

Key features

X15
SBA 6x4
Sleeper Cab

location_on

Doggett Freightliner - San Antonio

San Antonio, TX (1,021.5 mi)

(830) 429-5002

Semi Trucks for Sale near Rockford, Illinois

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Used 2020 Freightliner Cascadia Detroit DD13 Day Cab Truck

Used 2020 Freightliner Cascadia Detroit DD15AT Day Cab Truck

Used 2022 Freightliner Cascadia Detroit DD15AT Sleeper Truck

Used 2020 Freightliner Cascadia Detroit DD15AT Day Cab Truck

Used 2020 Freightliner Cascadia Detroit DD15AT Sleeper Truck

Used 2020 Freightliner Cascadia Detroit DD13 Day Cab Truck

Used 2022 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 2021 Freightliner Cascadia Detroit DD13 Day Cab Truck

Used 2021 Volvo VNR Volvo D13 Semi Trucks / Tractors

Used 2020 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 2021 Freightliner Cascadia Detroit DD15AT Day Cab Truck

Used 2022 Volvo VNL Volvo D13 TC Semi Trucks / Tractors

Used 2008 Kenworth T300 Paccar PX-8 Day Cab Truck

Used 2020 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

New 2026 Freightliner Cascadia Detroit DD13 Day Cab Truck

Used 2022 Freightliner Cascadia Detroit DD13 Sleeper Truck

Used 2021 Freightliner Cascadia Detroit DD15 Sleeper Truck

Used 2022 Freightliner Cascadia Detroit DD13 Sleeper Truck

Used 2022 Freightliner Cascadia Detroit DD15 Sleeper Truck

Used 2022 Freightliner Cascadia Detroit DD13 Sleeper Truck

Used 2023 Freightliner Cascadia Detroit DD15 Sleeper Truck

Used 2022 Freightliner Cascadia Detroit DD15 Sleeper Truck

Used 2022 Freightliner Cascadia Cummins X12 Day Cab Truck

Used 2022 International LT Cummins X15 Semi Trucks / Tractors

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