If you’re shopping for a used semi truck in 2026, the market is giving buyers more reason to pay attention. Used Class 8 retail activity strengthened during the first half of the year while freight rates and carrier conditions also improved. That does not mean every truck is a good buy—the right engine, transmission, mileage, maintenance history, specifications and purchase price still matter. Whether you’re an owner-operator or managing a fleet, here are five used semi trucks we believe are worth considering in 2026:
Freightliner Glider Kit Trucks remain a unique option for buyers specifically looking for older, pre-emissions powertrains and a more mechanically simple truck. Many are equipped with engines such as the Detroit Series 60, and their appeal often comes from familiarity, serviceability and the absence of later emissions systems. Condition varies significantly from truck to truck, so engine history, rebuild documentation, chassis condition and compliance requirements should all be carefully reviewed before purchasing.
These trucks are widely available with various mileage and features. For a closer look at our current inventory of Freightliner Glider Kit Trucks, visit our semi-trucks page.
The Freightliner Cascadia 126 remains one of the most common choices in the used Class 8 market. Buyers can find a wide range of model years, mileage levels and configurations, commonly paired with Detroit DD13 or DD15 engines and Detroit DT12 automated transmissions. Its large dealer and service network, aerodynamic design and broad parts availability make the Cascadia 126 especially attractive to fleets and owner-operators looking for a truck that is familiar and straightforward to support.
With a range of options available, from basic to fully loaded models, there’s a Cascadia 126 to fit various needs. Check out available Freightliner Cascadia 126 models in our current listings.
The Freightliner Cascadia 125 is an older platform than the Cascadia 126, but it can still offer strong value for buyers focused on acquisition cost and proven components. Many are equipped with Detroit DD13 or DD15 engines and are available as both sleepers and day cabs. As these trucks age, maintenance history and overall condition become especially important, so buyers should pay close attention to engine work, emissions-system history, transmission condition and chassis maintenance.
You’ll find a variety of configurations, from sleeper cabs to day cabs. Browse our current selection of Freightliner Cascadia 125 trucks for sale.
The Kenworth T680 continues to be a strong used-truck option for buyers who value driver comfort, aerodynamic styling and a premium cab environment. Trucks equipped with the Cummins X15 are especially popular with buyers who prefer the Cummins powertrain. Specifications vary widely, so axle ratio, transmission, horsepower, sleeper configuration and maintenance history should be considered alongside mileage and price.
Available with various mileage and features, the T680 is a great choice for both long-haul and regional applications. Explore our current inventory of Kenworth T680 trucks available for purchase.
Rounding out our list is the Peterbilt 579, a popular choice among fleets and owner-operators looking for a premium highway tractor. Many used 579s are available with Cummins X15 power, automated transmissions and spacious sleeper configurations. Driver comfort, resale appeal and a wide range of specifications make the 579 worth considering, but buyers should still compare maintenance records, engine hours, mileage and overall condition between individual trucks.
Whether you’re looking for a day cab or a sleeper cab, the Peterbilt 579 is available in various configurations. Take a look at the Peterbilt 579 trucks currently available on our website.
Choosing the right used semi truck can help control acquisition cost, maintenance exposure and downtime while giving your business the equipment it needs to generate revenue. At 5 Star Truck Sales, we offer a wide selection of high-quality used trucks from leading manufacturers. Browse our latest inventory of semi trucks for sale and contact us today to schedule a test drive or request more information.