Equipment unit · VIN-decoded · NHTSA vPIC

2024 Kenworth T680

3WKYD49X8RF538329 · Truck-Tractor · TRUCK
Carriers run under2
37 mo
Inspections20
all-time
OOS inspections4
of 20
First seenJul 7, 2023
TX
Last seenAug 10, 2026
TX
Inspected under 2 different carriers in 37 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
3WKYD49X8RF538329
Make
Kenworth
Model
T680
Model year
2024
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 16, 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
3WK

Deterministic · VIN positions 1–3.

Vehicle descriptor section
YD49X

Deterministic · VIN positions 4–8.

Check digit
8 · valid

Deterministic · position 9; calculated value 8.

Model year candidates
1994 or 2024

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

North American serial sequence
538329

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 · 1,094 decoded VINs at 100.0% prefix purity.

Model
T680

Prefix basis · 1,094 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
2024

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 · Jul 7, 2023 – Aug 10, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Aug 10, 2026TXI · Full5TRANSPORTES LARMEX SA DE CV 243635376AZ7M/MX
Aug 3, 2026TXI · Full2TRANSPORTES LARMEX SA DE CV 243635376AZ7M/MX
Jul 30, 2026TXI · Full5OOSTRANSPORTES LARMEX SA DE CV 243635376AZ7M/MX
Jul 27, 2026TXI · Full3TRANSPORTES LARMEX SA DE CV 243635376AZ7M/MX
Jul 27, 2026TXI · Full3TRANSPORTES LARMEX SA DE CV 243635376AZ7M/MX
Jul 24, 2026TXI · Full6TRANSPORTES LARMEX SA DE CV 243635376AZ7M/MX
Jun 12, 2026TXI · Full4TRANSPORTES LARMEX SA DE CV 243635376AZ7M/MX
Apr 23, 2026USI · Full0TRANSPORTES LARMEX SA DE CV 243635376AZ7M/MX
Dec 15, 2025TXI · Full2TRANSPORTES LARMEX SA DE CV 243635376AZ7M/MX
Dec 2, 2025USI · Full3TRANSPORTES LARMEX SA DE CV 243635376AZ7M/MX
Sep 19, 2024TXI · Full4OOSTRANSPORTES LARMEX SA DE CV 243635376AZ7M/MX
May 24, 2024USIII · Driver-only1OOSTRANSPORTES LARMEX SA DE CV 243635376AZ7M/MX
Apr 28, 2024USIII · Driver-only0TRANSPORTES LARMEX SA DE CV 243635376AZ7M/MX
Mar 29, 2024USII · Walk-around1FORZA NAFTA SERVICES SA DE CV 284000676AZ7M/MX
Oct 13, 2023TXII · Walk-around0TRANSPORTES LARMEX SA DE CV 243635376AZ7M/MX
Aug 9, 2023TXI · Full2TRANSPORTES LARMEX SA DE CV 243635376AZ7M/MX
Jul 20, 2023TXI · Full4TRANSPORTES LARMEX SA DE CV 243635376AZ7M/MX
Jul 19, 2023TXI · Full4OOSTRANSPORTES LARMEX SA DE CV 243635376AZ7M/MX
Jul 12, 2023TXI · Full2TRANSPORTES LARMEX SA DE CV 243635376AZ7M/MX
Jul 7, 2023TXI · Full4TRANSPORTES LARMEX SA DE CV 243635376AZ7M/MX
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
TRANSPORTES LARMEX SA DE CV2436353Jul 7, 2023Aug 10, 202619NL
FORZA NAFTA SERVICES SA DE CV2840006Mar 29, 2024Mar 29, 20241TA
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.
76AZ7MMX1TRANSPORTES LARMEX SA DE CVJul 7, 2023Aug 10, 202619
76AZ7MMXFORZA NAFTA SERVICES SA DE CVMar 29, 2024Mar 29, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 16, 2026