Equipment unit · VIN-decoded · NHTSA vPIC

2021 Kenworth T680

1XKYDP9X5MJ449033 · Truck-Tractor · TRUCK
Carriers run under3
21 mo
Inspections4
all-time
OOS inspections0
of 4
First seenOct 10, 2024
CA
Last seenJul 18, 2026
CA
Inspected under 3 different carriers in 21 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
1XKYDP9X5MJ449033
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
Jul 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
YDP9X

Deterministic · VIN positions 4–8.

Check digit
5 · valid

Deterministic · position 9; calculated value 5.

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
449033

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 · Oct 10, 2024 – Jul 18, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jul 18, 2026CAIII · Driver-only0SUPERTRANSPORT LLC 230936553KT7W/MO
Mar 19, 2026CAI · Full0SUPERTRANSPORT LLC 230936553KT7W/MO
Nov 10, 2025KYII · Walk-around2DIAMOND GROUP LOGISTICS CO 3043555P1311028/IL
Oct 10, 2024CAII · Walk-around1SYSTEM TRANSPORT INC 27935RP11465/WA
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
SUPERTRANSPORT LLC2309365Mar 19, 2026Jul 18, 20262MO
DIAMOND GROUP LOGISTICS CO3043555Nov 10, 2025Nov 10, 20251IL
SYSTEM TRANSPORT INC27935Oct 10, 2024Oct 10, 20241WA
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.
53KT7WMO1SUPERTRANSPORT LLCMar 19, 2026Jul 18, 20262
P1311028ILDIAMOND GROUP LOGISTICS CONov 10, 2025Nov 10, 20251
RP11465WASYSTEM TRANSPORT INCOct 10, 2024Oct 10, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 21, 2026