Equipment unit · VIN-decoded · NHTSA vPIC

2020 Peterbilt 579

1XPBDP9X9LD724688 · Truck-Tractor · TRUCK
Carriers run under4
25 mo
Inspections6
all-time
OOS inspections1
of 6
First seenOct 25, 2023
UT
Last seenNov 10, 2025
TX
Inspected under 4 different carriers in 25 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
1XPBDP9X9LD724688
Make
Peterbilt
Model
579
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 25, 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
9 · valid

Deterministic · position 9; calculated value 9.

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
724688

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.

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
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 25, 2023 – Nov 10, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Nov 10, 2025TXII · Walk-around0MCC XPRESS LLC 4106879PXA9944/OH
Nov 4, 2025OHI · Full0MCC XPRESS LLC 4106879PXA9944/OH
Sep 5, 2025TNI · Full3OOSDIAMOND STAR LLC 3461054PXA9944/OH
May 31, 2025TNIII · Driver-only1DIAMOND STAR LLC 3461054PXA9944/OH
Sep 5, 2024OHII · Walk-around0ADAM 1 TRUCKING LLC 2375845PXA9944/OH
Oct 25, 2023UTIII · Driver-only0EW WYLIE LLC 82762225256P/ND
03

Carriers this unit has run under

4 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
MCC XPRESS LLC4106879Nov 4, 2025Nov 10, 20252OH
DIAMOND STAR LLC3461054May 31, 2025Sep 5, 20252OH
ADAM 1 TRUCKING LLC2375845Sep 5, 2024Sep 5, 20241OH
EW WYLIE LLC827622Oct 25, 2023Oct 25, 20231ND
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.
PXA9944OHMCC XPRESS LLCNov 4, 2025Nov 10, 20252
PXA9944OHDIAMOND STAR LLCMay 31, 2025Sep 5, 20252
PXA9944OHADAM 1 TRUCKING LLCSep 5, 2024Sep 5, 20241
25256PNDEW WYLIE LLCOct 25, 2023Oct 25, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 25, 2026