VIN 1FUPAPYB4MH388456 — 1991 Freightliner (FREIGHTLIN) USF-1E
Recorded with Alberto Diaz · USDOT 812100
Vehicle identity
| VIN | 1FUPAPYB4MH388456 |
| Model year | 1991 |
| Make | Freightliner (FREIGHTLIN) |
| Model | USF-1E |
| Vehicle type | TRUCK TRACTOR |
| License plates | MX 03AL3Y (MX) TX 42X784V (Texas) |
| Inspection window | 2024-11-22 to 2026-11-03 |
Recorded vehicle, plate and carrier history
These are dated observations in the records available to us. They do not establish ownership, a sale, a transfer date, or continuous use between observations. The latest observation may not describe today’s vehicle or carrier.
| Observed dates | VIN | Plate | Reported carrier |
|---|---|---|---|
| 2026-11-03 | 1FUPAPYB4MH388456 | MX 03AL3Y | ALBERTO DIAZ · USDOT 812100 |
| 2025-03-14 | 1FUPAPYB4MH388456 | TX 42X784V | MTX TRUCK LINES · USDOT 3174568 |
Evidence: FMCSA inspection observations and retained snapshots of our vehicle records. Coverage is incomplete; an unreported change cannot be dated from these records.
Most recently recorded carrier for this vehicle
Alberto Diaz Active
- USDOT
- 812100
- MC
- 313163
- Status
- Active
- Type
- Motor Carrier
- Based in
- Nuevo Laredo, TA
- Power units
- 1
- Drivers
- 1
- Inspections (24 mo)
- 11
- Crashes (24 mo)
- 0
- Vehicle OOS rate
- 81.8%
Carrier recorded at the latest inspection in the available records (2026-11-03). This does not establish current ownership or confirm that the carrier still operates this vehicle.
View full carrier profile →Authority, insurance & bonds, safety scores, crash history, inspections and the full fleet list.This vehicle has also been operated by 1 other carrier (listed below).
What this means
1FUPAPYB4MH388456 is a 1991 Freightliner USF-1E operated by Alberto Diaz (USDOT 812100). License plates on its inspection records: MX 03AL3Y, TX 42X784V. 5 roadside inspections on FMCSA record. 4 out-of-service results on record.
What this VIN is
1991 Freightliner USF-1E is the vehicle NHTSA’s VIN registry returns for 1FUPAPYB4MH388456. It is a truck-tractor built by DAIMLER TRUCK NORTH AMERICA LLC at the MT. HOLLY, NORTH CAROLINA plant. Powertrain: S-60 engine, 11.1L displacement, running on diesel. Its gross vehicle weight rating (Class 8: 33,001 lb and above (14,969 kg and above)) places it in Class 8 heavy-duty (33,001 lb GVWR and above) — the line-haul tractor / heavy straight-truck tier.
Roadside inspection & out-of-service record
This specific vehicle appears in 5 FMCSA roadside inspections between 2024-11-22 and 2026-11-03. Its records show 4 out-of-service violations across 5 inspections. Out-of-service breakdown: 3 vehicle, 1 driver. Its most recent inspection (2026-11-03) was in US, a Level I — full inspection of the driver and the vehicle. Of 18 recorded violations, the most come from Vehicle Maintenance (14), followed by Fatigued Driving (HOS) (4). Vehicle Maintenance covers brakes, lights, tires, load securement and other mechanical condition items.
Operator history
This VIN appears under 2 different carriers in our records, oldest first: Mtx Truck Lines (USDOT 3174568) from 2024-11-22 to 2025-03-14 — 4 inspections, 4 out-of-service; Alberto Diaz (USDOT 812100) on 2026-11-03 — 1 inspection, none out of service.
Full spec sheet (NHTSA vPIC decode)
| Make | FREIGHTLINER |
| Model | USF-1E |
| Model Year | 1991 |
| Vehicle Type | TRUCK NHTSA’s top-level vehicle category derived from the VIN. |
| Body Class | Truck-Tractor The body style NHTSA assigns from the VIN — e.g. truck-tractor, straight truck, or cutaway. |
| G V W R | Class 8: 33,001 lb and above (14,969 kg and above) Class 8 heavy-duty (33,001 lb GVWR and above) — the line-haul tractor / heavy straight-truck tier |
| Manufacturer | DAIMLER TRUCK NORTH AMERICA LLC The legal manufacturer of record in NHTSA’s database. |
| Plant City | MT. HOLLY Where the chassis was assembled — useful for verifying the VIN against the build record. |
| Plant State | NORTH CAROLINA |
| Plant Country | UNITED STATES (USA) |
| Engine Model | S-60 The engine family installed at the factory — a major driver of resale value and parts availability. |
| Engine Configuration | In-Line Cylinder layout (e.g. inline-6), the dominant configuration in Class 8 diesels. |
| Engine Cylinders | 6 |
| Displacement L | 11.1 Engine displacement in liters — bigger generally means more torque for heavy loads. |
| Fuel Type Primary | Diesel Primary fuel — diesel dominates heavy trucking; CNG/electric change maintenance and range. |
| Brake System Type | Air Air vs hydraulic brakes — air brakes are standard on heavy trucks and require an endorsement. |
| Drive Type | 6x4 Axle drive configuration (e.g. 6x4), which affects traction and fuel economy. |
FMCSA BASIC safety category breakdown
| BASIC Category | Violations | Status |
|---|---|---|
| Vehicle Maintenance | 14 | ⚠ High |
| Fatigued Driving (HOS) | 4 | ! Moderate |
| Unsafe Driving | 0 | ✓ Clean |
| Driver Fitness | 0 | ✓ Clean |
| Controlled Substances | 0 | ✓ Clean |
| Hazmat | 0 | ✓ Clean |
Operator history — 2 carriers operated this VIN
Related vehicles
- 3AKY8HCB1YDG67343 Freightliner (2 insp · 7 OOS)
- 2FUYDSEB4VA773314 Freightliner (4 insp · 6 OOS)
- 1FUYSZYB5XLA24306 Freightliner (4 insp · 5 OOS)
- 13N148309T1566431 Fontaine (3 insp)
- 1TTF4820562014486 TRANSCRAFT (1 insp)
- 1H2P04527NW036604 WILS (1 insp)
Related
Frequently Asked Questions
What does VIN 1FUPAPYB4MH388456 decode to?
Why was 1991 Freightliner USF-1E VIN 1FUPAPYB4MH388456 placed out of service?
Which carriers have operated VIN 1FUPAPYB4MH388456?
What license plate is on VIN 1FUPAPYB4MH388456?
Vetting a used truck purchase?
Tell us what you're looking for and we'll send matching new or used trucks — no obligation.