Equipment unit · VIN-decoded · NHTSA vPIC

2021 Thomas Built MVP-EF (Engine Front)

1T88Y9D20M1169526 · Bus - School Bus · BUS
Carriers run under2
37 mo
Inspections6
all-time
OOS inspections0
of 6
First seenJun 15, 2023
MI
Last seenJul 21, 2026
MI
Inspected under 2 different carriers in 37 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
1T88Y9D20M1169526
Make
Thomas Built
Model
MVP-EF (Engine Front)
Model year
2021
Body class
Bus - School Bus
Vehicle type
BUS
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jul 7, 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
1T8

Deterministic · VIN positions 1–3.

Vehicle descriptor section
8Y9D2

Deterministic · VIN positions 4–8.

Check digit
0 · valid

Deterministic · position 9; calculated value 0.

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
169526

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
THOMAS BUILT

Prefix basis · 84 decoded VINs at 100.0% prefix purity.

Model
MVP-EF (Engine Front)

Prefix basis · 84 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
2021

Observed directly for this VIN via NHTSA vPIC.

Observed make
THOMAS BUILT

Observed directly for this VIN via NHTSA vPIC.

Observed model
MVP-EF (Engine Front)

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Bus - School Bus

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
BUS

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 · Jun 15, 2023 – Jul 21, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jul 21, 2026MIV · Vehicle-only0DEAN MANAGEMENT SERVICES INC 2885145104X578/MI
Jul 21, 2026MIV · Vehicle-only0DEAN TRANSPORTATION INC 1538328104X578/MI
Jul 8, 2025MIV · Vehicle-only0DEAN MANAGEMENT SERVICES INC 2885145104X578/MI
Jul 8, 2025MIV · Vehicle-only0DEAN TRANSPORTATION INC 1538328104X578/MI
Jun 15, 2023MIV · Vehicle-only0DEAN MANAGEMENT SERVICES INC 2885145104X578/MI
Jun 15, 2023MIV · Vehicle-only0DEAN TRANSPORTATION INC 1538328104X578/MI
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
DEAN TRANSPORTATION INC1538328Jun 15, 2023Jul 21, 20263MI
DEAN MANAGEMENT SERVICES INC2885145Jun 15, 2023Jul 21, 20263MI
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.
104X578MI1DEAN TRANSPORTATION INCJun 15, 2023Jul 21, 20263
104X578MI1DEAN MANAGEMENT SERVICES INCJun 15, 2023Jul 21, 20263
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 7, 2026