Equipment unit · VIN-decoded · NHTSA vPIC

2021 Kenworth T680

1XKYD49X0MJ435944 · Truck-Tractor · TRUCK
Carriers run under2
31 mo
Inspections6
all-time
OOS inspections1
of 6
First seenSep 30, 2023
CA
Last seenApr 10, 2026
NV
Inspected under 2 different carriers in 31 months
A unit that bounces between many operators can indicate slip-seating, heavy sub-haul, or double-brokering. Review the carrier timeline below for load integrity — context for human judgment, not a verdict.
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1XKYD49X0MJ435944
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
Jun 24, 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
0 · valid

Deterministic · position 9; calculated value 0.

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
435944

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 30, 2023 – Apr 10, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Apr 10, 2026NVIII · Driver-only1OOSCARLOS MARTINEZ 10341901034190/UT
Feb 20, 2026KSII · Walk-around2CARLOS MARTINEZ 1034190TEMP/UT
Nov 22, 2024CAIII · Driver-only0SWIFT TRANSPORTATION COMPANY OF ARIZONA LLC 542832970628/IN
May 10, 2024CAIII · Driver-only0SWIFT TRANSPORTATION COMPANY OF ARIZONA LLC 542832970628/IN
Jan 13, 2024CAI · Full0SWIFT TRANSPORTATION COMPANY OF ARIZONA LLC 542832970628/IN
Sep 30, 2023CAI · Full0SWIFT TRANSPORTATION COMPANY OF ARIZONA LLC 542832970628/IN
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
CARLOS MARTINEZ1034190Feb 20, 2026Apr 10, 20262UT
SWIFT TRANSPORTATION COMPANY OF ARIZONA LLC54283Sep 30, 2023Nov 22, 20244AZ
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.
1034190UTCARLOS MARTINEZApr 10, 2026Apr 10, 20261
TEMPUTCARLOS MARTINEZFeb 20, 2026Feb 20, 20261
2970628INSWIFT TRANSPORTATION COMPANY OF ARIZONA LLCSep 30, 2023Nov 22, 20244
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 24, 2026