Equipment unit · VIN-decoded · NHTSA vPIC

2021 Kenworth T680

1XKYDP9X4MJ458631 · Truck-Tractor · TRUCK
Carriers run under2
33 mo
Inspections11
all-time
OOS inspections1
of 11
First seenJun 23, 2023
OR
Last seenMar 10, 2026
AZ
Inspected under 2 different carriers in 33 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
1XKYDP9X4MJ458631
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 17, 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
YDP9X

Deterministic · VIN positions 4–8.

Check digit
4 · valid

Deterministic · position 9; calculated value 4.

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
458631

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 · 26,022 decoded VINs at 100.0% prefix purity.

Model
T680

Prefix basis · 26,022 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 · Jun 23, 2023 – Mar 10, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Mar 10, 2026AZII · Walk-around15OOSMARTINEZ & SONS TRANSPORT INC 27361639H31827/CA
Jan 21, 2025CAI · Full1LTA BRO INC 1349469XP97460/CA
Sep 5, 2024ORIII · Driver-only0LTA BRO INC 1349469XP97460/CA
Aug 16, 2024ORIII · Driver-only0LTA BRO INC 1349469XP97460/CA
Jul 18, 2024CAII · Walk-around0LTA BRO INC 1349469XP97460/CA
Jun 12, 2024CAI · Full0LTA BRO INC 1349469XP97460/CA
May 15, 2024CAIII · Driver-only1LTA BRO INC 1349469XP97460/CA
Sep 1, 2023WAIII · Driver-only3LTA BRO INC 1349469XP97460/CA
Jun 29, 2023WAIII · Driver-only6LTA BRO INC 1349469XP97460/CA
Jun 28, 2023CAIII · Driver-only1LTA BRO INC 1349469XP97460/CA
Jun 23, 2023ORIII · Driver-only2LTA BRO INC 1349469XP97460/CA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
MARTINEZ & SONS TRANSPORT INC2736163Mar 10, 2026Mar 10, 20261CA
LTA BRO INC1349469Jun 23, 2023Jan 21, 202510CA
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.
9H31827CAMARTINEZ & SONS TRANSPORT INCMar 10, 2026Mar 10, 20261
XP97460CALTA BRO INCJun 23, 2023Jan 21, 202510
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 17, 2026