Equipment unit · VIN-decoded · NHTSA vPIC

2023 Peterbilt 579

1XPBDP9X1PD874526 · Truck-Tractor · TRUCK
Carriers run under2
36 mo
Inspections6
all-time
OOS inspections2
of 6
First seenAug 29, 2023
CA
Last seenAug 27, 2026
TX
Inspected under 2 different carriers in 36 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
1XPBDP9X1PD874526
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
Jul 12, 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
BDP9X

Deterministic · VIN positions 4–8.

Check digit
1 · valid

Deterministic · position 9; calculated value 1.

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
874526

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 · 21,366 decoded VINs at 100.0% prefix purity.

Model
579

Prefix basis · 21,366 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.

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 29, 2023 – Aug 27, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Aug 27, 2026TXII · Walk-around2—MTA EXPRESS LLC 389028549P938N/TX
Aug 11, 2026TXII · Walk-around2OOSMTA EXPRESS LLC 3890285NONE/TX
Dec 30, 2024CAII · Walk-around1OOSS & B TRUCKING LLC 2502164A535721/MS
Oct 24, 2024SCIII · Driver-only2—S & B TRUCKING LLC 2502164A535721/MS
Sep 5, 2024ARIII · Driver-only0—S & B TRUCKING LLC 2502164A535721/MS
Aug 29, 2023CAI · Full0—S & B TRUCKING LLC 2502164A318714/MS
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
MTA EXPRESS LLC3890285Aug 11, 2026Aug 27, 20262TX
S & B TRUCKING LLC2502164Aug 29, 2023Dec 30, 20244MS
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.
49P938NTX1MTA EXPRESS LLCAug 27, 2026 → Aug 27, 20261
NONETX1MTA EXPRESS LLCAug 11, 2026 → Aug 11, 20261
A535721MS—S & B TRUCKING LLCSep 5, 2024 → Dec 30, 20243
A318714MS—S & B TRUCKING LLCAug 29, 2023 → Aug 29, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 12, 2026