Equipment unit · VIN-decoded · NHTSA vPIC

2021 Carmex

3A9DM3923MG019241 · TRAILER
Carriers run under4
30 mo
Inspections15
all-time
OOS inspections1
of 15
First seenDec 7, 2023
TX
Last seenJun 9, 2026
TX
Inspected under 4 different carriers in 30 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
3A9DM3923MG019241
Make
Carmex
Model
Not decoded
Model year
2021
Body class
Not decoded
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jun 16, 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
3A9

Deterministic · VIN positions 1–3.

Vehicle descriptor section
DM392

Deterministic · VIN positions 4–8.

Check digit
3 · valid

Deterministic · position 9; calculated value 3.

Model year candidates
1991 or 2021

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

North American serial sequence
019241

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.

Not established

No supported platform claim is established for this prefix

The resolver answered successfully but returned no row above the evidence floor. This does not mean the vehicle has no platform or that no data exists; it means this store cannot make the claim.

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
2021

Observed directly for this VIN via NHTSA vPIC.

Observed make
CARMEX

Observed directly for this VIN via NHTSA vPIC.

Observed model
Not established

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Not established

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
TRAILER

Observed directly for this VIN via NHTSA vPIC.

GVWR
Not established

Observed directly for this VIN via NHTSA vPIC.

Not established

  • platform make
  • platform model
  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Dec 7, 2023 – Jun 9, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jun 9, 2026TXI · Full4OOSQUALITY TANK SA DE CV 286460068UH5Y/MX
Jun 5, 2026TXII · Walk-around0QUALITY TANK SA DE CV 286460068UH5Y/MX
Apr 30, 2026USII · Walk-around1QUALITY TANK SA DE CV 286460068UH5Y/MX
Apr 20, 2026TXII · Walk-around0QUALITY TANK SA DE CV 286460068UH5Y/MX
Apr 15, 2026TXII · Walk-around0QUALITY TANK SA DE CV 286460068UH5Y/MX
Mar 3, 2026USI · Full0QUALITY TANK SA DE CV 286460068UH5Y/MX
Jan 2, 2026TXI · Full2QT EXPRESS ENTERPRISES LLC 312971668UH5Y/MX
Jul 22, 2025TXI · Full0QUALITY TANK SA DE CV 286460068UH5Y/MX
Apr 9, 2025TXII · Walk-around0QUALITY TANK SA DE CV 286460068UH5Y/MX
Mar 25, 2025TXII · Walk-around0QUALITY TANK SA DE CV 286460068UH5Y/MX
Dec 9, 2024TXI · Full1INTERNATIONAL QTXPRESS LLC 322701568UH5Y/MX
Nov 30, 2024TXII · Walk-around1QUALITY TANK SA DE CV 286460068UH5Y/MX
Nov 23, 2024TXII · Walk-around1FLETES MINEROS MARELI SA DE CV 408742368UH5Y/MX
Aug 15, 2024TXII · Walk-around1QUALITY TANK SA DE CV 286460068UH5Y/MX
Dec 7, 2023TXII · Walk-around0QUALITY TANK SA DE CV 286460068UH5Y/MX
03

Carriers this unit has run under

4 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
QUALITY TANK SA DE CV2864600Dec 7, 2023Jun 9, 202612NL
QT EXPRESS ENTERPRISES LLC3129716Jan 2, 2026Jan 2, 20261CA
INTERNATIONAL QTXPRESS LLC3227015Dec 9, 2024Dec 9, 20241TX
FLETES MINEROS MARELI SA DE CV4087423Nov 23, 2024Nov 23, 20241NL
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.
68UH5YMXQUALITY TANK SA DE CVDec 7, 2023Jun 9, 202612
68UH5YMXQT EXPRESS ENTERPRISES LLCJan 2, 2026Jan 2, 20261
68UH5YMXINTERNATIONAL QTXPRESS LLCDec 9, 2024Dec 9, 20241
68UH5YMXFLETES MINEROS MARELI SA DE CVNov 23, 2024Nov 23, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 16, 2026