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Kenworth · Class 8 · Diesel

T680 / T680 Next Gen

Model years T680 ~2016-2020; Next Gen ~2021-2026 · Conventional aero; day cab, 40/52/76 in sleeper

A conventional Class 8 built for on-highway tractor (van/reefer/flatbed), day cab & sleeper line/regional haul. Powered by PACCAR MX-13 12.9L (405-510 hp); PACCAR MX-11 10.8L (355-430 hp); Cummins X15 15L (to 605 hp).

GVWR
52,000 lb
Est. payload
Body-dep.
Horsepower
355 hp
From (est.)
$152,000
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Full specifications

Make / ModelKenworth T680 / T680 Next Gen
Model yearsT680 ~2016-2020; Next Gen ~2021-2026
Weight classClass 8
Cab styleConventional aero; day cab, 40/52/76 in sleeper
GVWR~52,000-60,600 tractor (build dependent)
GCWROn-highway typ to ~80,000; to ~110,000 (MX-11 + automated regional)
Est. payloadTractor - governed by GCWR/trailer
Front axle (FAWR)12,000-14,600 (13,200 common steer); build dependent
Rear axle (RAWR)Tandem 40,000 std, 46,000 avail; build dependent
Rear axle configTandem
Wheelbase~210-231 typical (sleeper ~217-231; day cab ~210); varies
EnginePACCAR MX-13 12.9L (405-510 hp); PACCAR MX-11 10.8L (355-430 hp); Cummins X15 15L (to 605 hp)
Horsepower~355-510 (PACCAR); to 605 (X15)
Torque (lb-ft)MX-11 1,250-1,650; MX-13 1,450-1,850; X15 to 2,050
TransmissionPACCAR TX-12/TX-18 (PRO) automated; Eaton Endurant; Allison; Eaton manual
Typical bodiesOn-highway tractor (van/reefer/flatbed), day cab & sleeper line/regional haul
NotesNext Gen (2021) added aero/MPG gains, digital dash. BEV=T680E; hydrogen=T680 FCEV. Final specs depend on the specific build/order
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Tractor GVWR/axle/WB build-dependent; engine data verified Payload, GVWR and axle ratings are configuration-dependent estimates. Confirm against a VIN-decoded chassis spec sheet before ordering.

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