2021 Kenworth T680

$39,999

UsedClass 8Sleeper Truck

Kansas City, MO

Miles

528,655 mi

Year

2021

Engine

PACCAR MX 13 Liter

Horsepower

455 HP

Transmission

Automatic

Fuel

Diesel

Specifications

Full model specs

Engine

Make: PACCAR
Model: MX 13 Liter
HP: 455
Fuel: Diesel

Drivetrain

Transmission: Automatic

Dealer

Arrow Truck Sales Kansas City

Kansas City, MO

Visit dealer page

Asking

$39,999

Search trucks

−$5,000 · 81d

1 photo

VIN ARRWSTCK000271756 · Stock #arrow-271756

2021 Kenworth T680

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UsedClass 8Sleeper Truck

Asking price over time

1 dealer-initiated drop · total −$5,000 (11.1%)

This listing90-day comp medianDealer drop

Asking now

$39,999

Initial ask

$44,999

Comp median

$49,999

Days listed

Comp median is the median asking price across N similar trucks (same make/model/year/spec) in the last 90 days. Not a valuation. We never tell you whether to buy.

Finance calculator

2021 Kenworth T680 · 528,655 mi

Est. monthly

$766.55

Vehicle price

Pre-tax purchase price

Term (months)

Down payment (10%)

$4,000

Owner-ops: 10–20% typical

APR (9.50%)

Prime 7–9% · Median 9–12% · Subprime 14%+

Trade-in value

Deducted from financed amount

Condition

Drives Federal Excise Tax (FET)

Federal Excise Tax (FET)

FET applies$0

Skip if straight truck under 33k GVWR or trailer under 26k GVWR.

Off — used vehicles are exempt

Sales tax (0.00%)

Often 0% for interstate commercial use

Doc fee

Some states cap (CA $85, NY $75)

Title + registration

State title + lien fee

Balloon payment at end

Lowers monthly; paid as lump at term

Apply Section 179 first-year deduction

Heavy trucks (GVWR > 14,000 lbs) qualify for full deduction up to $1,220,000 in 2026. Assumes purchase in service this tax year. Consult a CPA.

Amount financed

$36,499

Total interest

$9,494

Total cost

$49,993

Effective / month

$766.55

Estimate only. Actual financing depends on credit, dealer program, and lender terms. Heavy-truck APRs typically range 7–18% depending on credit tier, vehicle age, and LTV. Interstate commercial-use purchases are often exempt from state sales tax. TruckRadar is not a lender. Consult a commercial-vehicle lender for binding quotes.

Market Index

2021 Kenworth T680 MX 13 Liter

View full index →

Median Price

$44,999

This listing

−11% vs. comp median

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