Equipment unit · VIN-decoded · NHTSA vPIC

2018 Kenworth T680

1XKYD49X5JJ177917 · Truck-Tractor · TRUCK
Carriers run under2
34 mo
Inspections6
all-time
OOS inspections1
of 6
First seenAug 12, 2023
US
Last seenJun 12, 2026
US
Inspected under 2 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
1XKYD49X5JJ177917
Make
Kenworth
Model
T680
Model year
2018
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 24, 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
1XK

Deterministic · VIN positions 1–3.

Vehicle descriptor section
YD49X

Deterministic · VIN positions 4–8.

Check digit
5 · valid

Deterministic · position 9; calculated value 5.

Model year candidates
1988 or 2018

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

North American serial sequence
177917

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
KENWORTH

Prefix basis · 43,483 decoded VINs at 100.0% prefix purity.

Model
T680

Prefix basis · 43,483 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
2018

Observed directly for this VIN via NHTSA vPIC.

Observed make
KENWORTH

Observed directly for this VIN via NHTSA vPIC.

Observed model
T680

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 · Aug 12, 2023 – Jun 12, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jun 12, 2026USI · Full1MTT TRANSPORTATION SERVICES LLC 35915011P19629/TX
Dec 22, 2025USI · Full2FRONTERA EXPRESS LIMITED LIABILITY COMPANY 1205403R644139/TX
Dec 3, 2025USI · Full2FRONTERA EXPRESS LIMITED LIABILITY COMPANY 1205403R644139/TX
Jun 9, 2025USII · Walk-around0FRONTERA EXPRESS LIMITED LIABILITY COMPANY 1205403R644139/TX
May 7, 2025USI · Full2OOSFRONTERA EXPRESS LIMITED LIABILITY COMPANY 1205403R644139/TX
Aug 12, 2023USII · Walk-around0FRONTERA EXPRESS LIMITED LIABILITY COMPANY 1205403R644139/TX
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
MTT TRANSPORTATION SERVICES LLC3591501Jun 12, 2026Jun 12, 20261TX
FRONTERA EXPRESS LIMITED LIABILITY COMPANY1205403Aug 12, 2023Dec 22, 20255TX
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.
1P19629TXMTT TRANSPORTATION SERVICES LLCJun 12, 2026Jun 12, 20261
R644139TXFRONTERA EXPRESS LIMITED LIABILITY COMPANYAug 12, 2023Dec 22, 20255
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 24, 2026