Equipment unit · VIN-decoded · NHTSA vPIC

2021 Kenworth T680

1XKYD49X3MJ435095 · Truck-Tractor · TRUCK
Carriers run under2
32 mo
Inspections19
all-time
OOS inspections7
of 19
First seenDec 30, 2023
NC
Last seenAug 25, 2026
CA
Inspected under 2 different carriers in 32 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
1XKYD49X3MJ435095
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 14, 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
3 · valid

Deterministic · position 9; calculated value 3.

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
435095

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 · Dec 30, 2023 – Aug 25, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Aug 25, 2026CAII · Walk-around2SIMIC LOGISTICS INC 3438557ZP49199/CA
Jun 3, 2026ORIII · Driver-only1OOSSIMIC LOGISTICS INC 3438557ZP49199/CA
Apr 22, 2026CAIII · Driver-only2SIMIC LOGISTICS INC 3438557ZP49199/CA
Feb 4, 2026CAI · Full0SIMIC LOGISTICS INC 3438557ZP49199/CA
Feb 4, 2026CAI · Full6OOSSIMIC LOGISTICS INC 3438557ZP49199/CA
Jan 22, 2026CAII · Walk-around2SIMIC LOGISTICS INC 3438557ZP49199/CA
Jan 22, 2026CAIII · Driver-only1SIMIC LOGISTICS INC 3438557ZP49199/CA
Oct 9, 2025WAII · Walk-around10OOSSIMIC LOGISTICS INC 3438557ZP49199/CA
Sep 18, 2025CAI · Full4OOSSIMIC LOGISTICS INC 3438557ZP49199/CA
Aug 28, 2025CAI · Full7OOSSIMIC LOGISTICS INC 3438557ZP21443/CA
Aug 27, 2025CAII · Walk-around4OOSSIMIC LOGISTICS INC 3438557ZP21443/CA
Aug 17, 2025CAII · Walk-around3SIMIC LOGISTICS INC 3438557ZP21443/CA
Jun 2, 2025CAIII · Driver-only0SIMIC LOGISTICS INC 3438557ZP21443/CA
May 23, 2025CAII · Walk-around3OOSSIMIC LOGISTICS INC 3438557ZP21443/CA
Mar 5, 2025ORIII · Driver-only0SIMIC LOGISTICS INC 3438557ZP11624/CA
Oct 13, 2024IDII · Walk-around3SIMIC LOGISTICS INC 3438557ZP11624/CA
Sep 10, 2024CAI · Full0SIMIC LOGISTICS INC 3438557ZP11624/CA
Jul 31, 2024CAII · Walk-around1SIMIC LOGISTICS INC 3438557ZP11624/CA
Dec 30, 2023NCII · Walk-around0MARTEN TRANSPORT LTD 744322484586/IN
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
SIMIC LOGISTICS INC3438557Jul 31, 2024Aug 25, 202618CA
MARTEN TRANSPORT LTD74432Dec 30, 2023Dec 30, 20231WI
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.
ZP49199CA1SIMIC LOGISTICS INCSep 18, 2025Aug 25, 20269
ZP21443CASIMIC LOGISTICS INCMay 23, 2025Aug 28, 20255
ZP11624CASIMIC LOGISTICS INCJul 31, 2024Mar 5, 20254
2484586INMARTEN TRANSPORT LTDDec 30, 2023Dec 30, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 14, 2026