2024 Kenworth T680

Duty cycle profile points to highway miles, with 496,894 showing a truck that has lived in the seat and should be evaluated like a high-use fleet unit. Service history matters here, oil sample trends, overhead set records, aftertreatment maintenance, and any prior derate events are more meaningful than cosmetics at this mileage. Powertrain details are not provided, so verification should focus on engine family, transmission model, and rear ratio from the build sheet and dash data. ECM hours, idle percentage, and total fuel used are key cross-checks against odometer, along with fault history for aftertreatment, EGR, and turbo controls. Frame rails and crossmembers should be checked for straightness, corrosion at fastener points, and any evidence of prior repairs around suspension hangers and the fifth wheel area. Fifth wheel top plate wear, slider rail condition, and air line routing at the back of cab are common inspection points for a unit that has seen steady coupling cycles. Cab interior wear tells the truth on use, seat base play, pedal pad wear, steering wheel shine, and sleeper trim condition should align with the stated miles. Cooling stack cleanliness, charge-air piping boots, and belt drive components deserve close attention, along with tire wear pattern consistency to flag alignment, bushing, or ride height issues.