Equipment unit · VIN-decoded · NHTSA vPIC

2020 Peterbilt 389

1NPXP4EX1LD656141 · Truck-Tractor · INCOMPLETE VEHICLE
Carriers run under1
27 mo
Inspections3
all-time
OOS inspections0
of 3
First seenJul 21, 2023
IN
Last seenOct 19, 2025
IA
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1NPXP4EX1LD656141
Make
Peterbilt
Model
389
Model year
2020
Body class
Truck-Tractor
Vehicle type
INCOMPLETE VEHICLE
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jul 26, 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
1NP

Deterministic · VIN positions 1–3.

Vehicle descriptor section
XP4EX

Deterministic · VIN positions 4–8.

Check digit
1 · valid

Deterministic · position 9; calculated value 1.

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
656141

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 · 36 decoded VINs at 100.0% prefix purity.

Model
389

Prefix basis · 36 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
389

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Truck-Tractor

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
INCOMPLETE VEHICLE

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 · Jul 21, 2023 – Oct 19, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Oct 19, 2025IAIII · Driver-only2WISCONSIN SPECIALIZED LLC 406984663845Z/WI
May 28, 2024WIII · Walk-around0WISCONSIN SPECIALIZED LLC 406984663845Z/WI
Jul 21, 2023INIII · Driver-only1WISCONSIN SPECIALIZED LLC 406984663845Z/WI
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
WISCONSIN SPECIALIZED LLC4069846Jul 21, 2023Oct 19, 20253WI
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.
63845ZWIWISCONSIN SPECIALIZED LLCJul 21, 2023Oct 19, 20253
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 26, 2026