Equipment unit · VIN-decoded · NHTSA vPIC

2018 Kenworth T680

1XKYD49X7JJ139637 · Truck-Tractor · TRUCK
Carriers run under1
22 mo
Inspections7
all-time
OOS inspections1
of 7
First seenJul 4, 2023
TX
Last seenMay 15, 2025
TX
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1XKYD49X7JJ139637
Make
Kenworth
Model
T680
Model year
2018
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 21, 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
7 · valid

Deterministic · position 9; calculated value 7.

Model year candidates
1988 or 2018

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

North American serial sequence
139637

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
2018

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 4, 2023 – May 15, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
May 15, 2025TXIII · Driver-only0SAMAX EXPRESS INC 2457309R511914/TX
Apr 24, 2025TXI · Full7OOSSAMAX EXPRESS INC 2457309R511914/TX
Mar 19, 2025TXII · Walk-around4SAMAX EXPRESS INC 2457309R511914/TX
Sep 13, 2024ORII · Walk-around1SAMAX EXPRESS INC 2457309R511914/TX
Apr 24, 2024TXII · Walk-around1SAMAX EXPRESS INC 2457309R511914/TX
Mar 24, 2024TXII · Walk-around0SAMAX EXPRESS INC 2457309R511914/TX
Jul 4, 2023TXII · Walk-around3SAMAX EXPRESS INC 2457309R511914/TX
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
SAMAX EXPRESS INC2457309Jul 4, 2023May 15, 20257TX
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.
R511914TXSAMAX EXPRESS INCJul 4, 2023May 15, 20257
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 21, 2026