Equipment unit · VIN-decoded · NHTSA vPIC

2021 Peterbilt 579

1XPBD49X6MD753176 · Truck-Tractor · TRUCK
Carriers run under3
34 mo
Inspections13
all-time
OOS inspections1
of 13
First seenAug 21, 2023
NC
Last seenJun 27, 2026
CA
Inspected under 3 different carriers in 34 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
1XPBD49X6MD753176
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 17, 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 · Aug 21, 2023 – Jun 27, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jun 27, 2026CAII · Walk-around1—TIMBERWOLF TRUCKING INC 2028538ZP56998/CA
May 17, 2026TXIII · Driver-only0—TIMBERWOLF TRUCKING INC 2028538ZP56998/CA
May 12, 2026ALIII · Driver-only1—TIMBERWOLF TRUCKING INC 2028538ZP56998/CA
May 3, 2026UTIII · Driver-only0—TIMBERWOLF TRUCKING INC 2028538ZP56998/CA
Oct 28, 2025CAV · Vehicle-only0—TIMBERWOLF TRUCKING INC 2028538ZP56998/CA
Aug 27, 2025TNIII · Driver-only1—TIMBERWOLF TRUCKING INC 2028538ZP38400/CA
Jul 18, 2025KSIII · Driver-only2—TIMBERWOLF TRUCKING INC 2028538ZP56998/CA
May 14, 2025USI · Full2OOSLAUT TRANSPORTATION INC 2532266ZP38400/CA
May 12, 2025OKIII · Driver-only0—LAUT TRANSPORTATION INC 2532266ZP38400/CA
Dec 28, 2024CAII · Walk-around0—TIMBERWOLF TRUCKING INC 2028538ZP38400/CA
Nov 1, 2023NCI · Full0—NEW TAYLOR TRANSPORTATION LLC 311077S0713HY/TN
Sep 20, 2023NCI · Full0—NEW TAYLOR TRANSPORTATION LLC 311077S0713HY/TN
Aug 21, 2023NCI · Full0—NEW TAYLOR TRANSPORTATION LLC 311077S0713HY/TN
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
TIMBERWOLF TRUCKING INC2028538Dec 28, 2024Jun 27, 20268CA
LAUT TRANSPORTATION INC2532266May 12, 2025May 14, 20252CA
NEW TAYLOR TRANSPORTATION LLC311077Aug 21, 2023Nov 1, 20233NC
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.
ZP56998CA1TIMBERWOLF TRUCKING INCJul 18, 2025 → Jun 27, 20266
ZP38400CA—TIMBERWOLF TRUCKING INCDec 28, 2024 → Aug 27, 20252
ZP38400CA—LAUT TRANSPORTATION INCMay 12, 2025 → May 14, 20252
S0713HYTN—NEW TAYLOR TRANSPORTATION LLCAug 21, 2023 → Nov 1, 20233
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 17, 2026
2021 Peterbilt 579 — VIN 1XPBD49X6MD753176