Equipment unit · VIN-decoded · NHTSA vPIC

2021 Peterbilt 579

1XPBD49X3MD756181 · Truck-Tractor · TRUCK
Carriers run under3
22 mo
Inspections5
all-time
OOS inspections2
of 5
First seenApr 15, 2024
TX
Last seenFeb 26, 2026
CA
Inspected under 3 different carriers in 22 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
1XPBD49X3MD756181
Make
Peterbilt
Model
579
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
Jun 28, 2026
vPIC returns make / model / year / body class / GVWR. Fields it does not resolve are shown as Not decoded rather than guessed.
02

Inspection history

Every roadside inspection of this VIN, newest first · Apr 15, 2024 – Feb 26, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Feb 26, 2026CAI · Full0—3G LOGISTICS LLC 3543734ZP11232/CA
Aug 26, 2025AZI · Full8OOSALVAREZ & SON'S TRANSPORT INC 2866207ZP11232/CA
Aug 6, 2025AZII · Walk-around12OOSALVAREZ & SON'S TRANSPORT INC 2866207ZP11232/CA
Feb 12, 2025CAII · Walk-around1—ALVAREZ & SON'S TRANSPORT INC 28662077027892/CO
Apr 15, 2024TXII · Walk-around1—FIRSTFLEET INC 3138913376784/IN
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
3G LOGISTICS LLC3543734Feb 26, 2026Feb 26, 20261CA
ALVAREZ & SON'S TRANSPORT INC2866207Feb 12, 2025Aug 26, 20253CA
FIRSTFLEET INC313891Apr 15, 2024Apr 15, 20241TN
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.
ZP11232CA—3G LOGISTICS LLCFeb 26, 2026 → Feb 26, 20261
ZP11232CA—ALVAREZ & SON'S TRANSPORT INCAug 6, 2025 → Aug 26, 20252
7027892CO—ALVAREZ & SON'S TRANSPORT INCFeb 12, 2025 → Feb 12, 20251
3376784IN—FIRSTFLEET INCApr 15, 2024 → Apr 15, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 28, 2026