T680

T680 is a designation used for multiple products, but it is most widely associated with the Kenworth T680, a Class 8 heavy-duty tractor-trailer built by Kenworth Truck Company, a subsidiary of PACCAR. The T680 was introduced in the early 2010s as part of a move toward improved fuel efficiency through enhanced aerodynamics and integrated design.

The Kenworth T680 is a conventional-cab tractor intended for long-haul and regional application. It is offered in day cab and sleeper configurations to suit different fleet requirements. The model emphasizes aerodynamic features and driver comfort, with an integrated cab design, carefully shaped surfaces to reduce drag, and options intended to support modern fleet operations. Powertrain choices typically include PACCAR engines, such as the MX series, and a range of transmissions from major suppliers, with configurations that support both efficiency and performance. Advanced safety, telematics, and connectivity options have been made available as fleet technologies evolved.

Since its introduction, the T680 has been adopted widely across North American trucking fleets for long-haul and regional duties. It is recognized for fuel-efficiency improvements and versatility in configuration, with ongoing updates to meet changing emissions standards and customer needs. While primarily associated with Kenworth, the T680 designation may appear in other product lines or markets in different contexts, though the Kenworth model is the most prominent reference.