Equipment unit · VIN-decoded · NHTSA vPIC

2021 Kenworth T680

1XKYD49X1MJ448136 · Truck-Tractor · TRUCK
Carriers run under1
10 mo
Inspections5
all-time
OOS inspections2
of 5
First seenSep 16, 2025
FL
Last seenJul 24, 2026
TN
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1XKYD49X1MJ448136
Make
Kenworth
Model
T680
Model year
2021
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jul 10, 2026
vPIC returns make / model / year / body class / GVWR. Fields it does not resolve are shown as Not decoded rather than guessed.
Decode evidence & sources

Deterministic structure

These fields come directly from VIN positions and the published checksum calculation, with zero store IO.

World manufacturer identifier
1XK

Deterministic · VIN positions 1–3.

Vehicle descriptor section
YD49X

Deterministic · VIN positions 4–8.

Check digit
1 · valid

Deterministic · position 9; calculated value 1.

Model year candidates
1991 or 2021

Position 10 repeats every 30 years; both candidates are retained and neither is silently selected.

North American serial sequence
448136

Deterministic · positions 12–17 for a North American WMI.

Sourced platform inference

The prefix store publishes only at support ≥ 3 and purity ≥ 90%. Prefix confidence is shown beside every established platform claim.

Make
KENWORTH

Prefix basis · 43,483 decoded VINs at 100.0% prefix purity.

Model
T680

Prefix basis · 43,483 decoded VINs at 100.0% prefix purity.

Model line
Not established

No sourced model-line label is established.

No source established for this field.

Generation
Not established

No sourced generation label is established.

No source established for this field.

Cab type
Not established

No sourced cab label is established.

No source established for this field.

Federal observation (NHTSA vPIC)

What the federal corpus observed directly for this exact VIN — independent of, and sometimes more specific than, the prefix-level inference above.

Observed model year
2021

Observed directly for this VIN via NHTSA vPIC.

Observed make
KENWORTH

Observed directly for this VIN via NHTSA vPIC.

Observed model
T680

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Truck-Tractor

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
TRUCK

Observed directly for this VIN via NHTSA vPIC.

GVWR
Class 8: 33,001 lb and above (14,969 kg and above)

Observed directly for this VIN via NHTSA vPIC.

Not established

  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Sep 16, 2025 – Jul 24, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jul 24, 2026TNII · Walk-around1OOSNANAK TRANSPORTATION INC 3365225W0775HY/TN
Jul 2, 2026LAIII · Driver-only0NANAK TRANSPORTATION INC 3365225W0775HY/TN
Jan 23, 2026SCIII · Driver-only2NANAK TRANSPORTATION INC 3365225W0775HY/TN
Oct 14, 2025KYI · Full4OOSNANAK TRANSPORTATION INC 3365225W0775HY/TN
Sep 16, 2025FLII · Walk-around0NANAK TRANSPORTATION INC 3365225L1802874560/TN
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
NANAK TRANSPORTATION INC3365225Sep 16, 2025Jul 24, 20265TN
Names are left-joined from the FMCSA census; a DOT with no census match falls back to its number.
04

Plate & unit-number history

The same truck under different plate registrations across carriers

PlateState / prov.Unit no.CarrierDate rangeInsp.
W0775HYTN1NANAK TRANSPORTATION INCOct 14, 2025Jul 24, 20264
L1802874560TNNANAK TRANSPORTATION INCSep 16, 2025Sep 16, 20251
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 10, 2026