Equipment unit · VIN-decoded · NHTSA vPIC

2020 Kenworth T680

1XKYD49X4LJ418952 · Truck-Tractor · TRUCK
Carriers run under3
33 mo
Inspections10
all-time
OOS inspections1
of 10
First seenAug 11, 2023
GA
Last seenMay 12, 2026
ND
Inspected under 3 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
1XKYD49X4LJ418952
Make
Kenworth
Model
T680
Model year
2020
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 18, 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
4 · valid

Deterministic · position 9; calculated value 4.

Model year candidates
1990 or 2020

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

North American serial sequence
418952

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
2020

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 · Aug 11, 2023 – May 12, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
May 12, 2026NDII · Walk-around1COLIBREX INC 386437656KT6Z/MO
May 7, 2026ORII · Walk-around4OOSCOLIBREX INC 386437656KT6Z/MO
Apr 24, 2026UTIII · Driver-only0COLIBREX INC 386437656KT6Z/MO
Nov 17, 2025LAIII · Driver-only3COLIBREX INC 386437678KT0H/MO
Aug 13, 2025UTI · Full1COLIBREX INC 386437678KTOH/MO
Mar 14, 2025WAII · Walk-around1COLIBREX INC 386437678KT0H/MO
Mar 13, 2025SDIII · Driver-only0COLIBREX INC 386437678KT0H/MO
Jun 20, 2024COIII · Driver-only1CIRCLE O INC 306389778KTOH/MO
May 2, 2024TNIII · Driver-only0CIRCLE O INC 306389778KT0H/MO
Aug 11, 2023GAIII · Driver-only0MARTEN TRANSPORT LTD 744322912959/IN
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
COLIBREX INC3864376Mar 13, 2025May 12, 20267OH
CIRCLE O INC3063897May 2, 2024Jun 20, 20242IL
MARTEN TRANSPORT LTD74432Aug 11, 2023Aug 11, 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.
56KT6ZMOCOLIBREX INCApr 24, 2026May 12, 20263
78KT0HMOCOLIBREX INCMar 13, 2025Nov 17, 20253
78KTOHMOCOLIBREX INCAug 13, 2025Aug 13, 20251
78KTOHMOCIRCLE O INCJun 20, 2024Jun 20, 20241
78KT0HMOCIRCLE O INCMay 2, 2024May 2, 20241
2912959INMARTEN TRANSPORT LTDAug 11, 2023Aug 11, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 18, 2026