Equipment unit · VIN-decoded · NHTSA vPIC

2023 Peterbilt 579

1XPBD49X8PD872576 · Truck-Tractor · TRUCK
Carriers run under3
26 mo
Inspections9
all-time
OOS inspections0
of 9
First seenOct 15, 2023
UT
Last seenDec 19, 2025
IN
Inspected under 3 different carriers in 26 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
1XPBD49X8PD872576
Make
Peterbilt
Model
579
Model year
2023
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 29, 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
1XP

Deterministic · VIN positions 1–3.

Vehicle descriptor section
BD49X

Deterministic · VIN positions 4–8.

Check digit
8 · valid

Deterministic · position 9; calculated value 8.

Model year candidates
1993 or 2023

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

North American serial sequence
872576

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
PETERBILT

Prefix basis · 26,166 decoded VINs at 100.0% prefix purity.

Model
579

Prefix basis · 26,166 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
2023

Observed directly for this VIN via NHTSA vPIC.

Observed make
PETERBILT

Observed directly for this VIN via NHTSA vPIC.

Observed model
579

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 15, 2023 – Dec 19, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Dec 19, 2025INIII · Driver-only0PROSTAR EXPRESS INC 3489998TEMP/TX
Nov 26, 2025MSIII · Driver-only0PROSTAR EXPRESS INC 3489998R645844/TX
Oct 27, 2025INIII · Driver-only2PROSTAR EXPRESS INC 3489998R645844/TX
Sep 25, 2025LAIII · Driver-only1PROSTAR EXPRESS INC 3489998R645844/TX
Feb 28, 2025WAIII · Driver-only2EZ EXPRESS INC 4047444R645844/TX
Jul 3, 2024ARIII · Driver-only0EZ EXPRESS INC 4047444R645844/TX
May 16, 2024AZI · Full0EZ EXPRESS INC 4047444R645844/TX
Apr 16, 2024COII · Walk-around1EZ EXPRESS INC 4047444R645844/TX
Oct 15, 2023UTIII · Driver-only1MATRIX LOGISTICS INC 3157032R645844/TX
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
PROSTAR EXPRESS INC3489998Sep 25, 2025Dec 19, 20254IL
EZ EXPRESS INC4047444Apr 16, 2024Feb 28, 20254TX
MATRIX LOGISTICS INC3157032Oct 15, 2023Oct 15, 20231IL
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.
TEMPTXPROSTAR EXPRESS INCDec 19, 2025Dec 19, 20251
R645844TXPROSTAR EXPRESS INCSep 25, 2025Nov 26, 20253
R645844TX1EZ EXPRESS INCApr 16, 2024Feb 28, 20254
R645844TXMATRIX LOGISTICS INCOct 15, 2023Oct 15, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 29, 2026