2018 PTRB 579
VIN 1XPBD49X1JD498836
Operating carrier of this vehicle
Melisark Holdings Llc Active
- USDOT
- 4383863
- MC
- 1718946
- Status
- Active
- Type
- Motor Carrier
- Based in
- Laredo, TX
- Power units
- 1
- Drivers
- 1
- Inspections (24 mo)
- 3
- Crashes (24 mo)
- 0
- Vehicle OOS rate
- 66.7%
What this means
1XPBD49X1JD498836 decodes to a 2018 PTRB 579. 3 roadside inspections on FMCSA record. 2 out-of-service results — investigate the specific causes.
What this VIN is
2018 PTRB 579 is the vehicle NHTSA’s VIN registry returns for 1XPBD49X1JD498836. It is a truck-tractor built by PETERBILT MOTORS COMPANY at the DENTON, TEXAS plant. Powertrain: ISX engine, 15L 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 3 FMCSA roadside inspections between 2025-08-19 and 2025-09-10. It was placed out of service 2 times. That is roughly 66.7% of its inspections producing an out-of-service order — above the national vehicle out-of-service average of about 20%. Out-of-service breakdown: 2 vehicle. Of 10 recorded violations, the most come from Vehicle Maintenance (9), followed by Fatigued Driving (HOS) (1). These are FMCSA BASIC safety categories — the same buckets that drive a carrier’s CSA score.
Operator history
This vehicle was operated by MELISARK HOLDINGS LLC (DOT 4383863) during our inspection window. Open the carrier profile for that operator’s full safety record, authority status, and fleet size.
How to use this report
If you’re buying this truck: ask the seller for repair records tied to the 2 out-of-service events above, and confirm the items were corrected, not just cleared. If you’re investigating an incident: the operator history above links to the carrier’s full FMCSA profile, where you can review authority, insurance, and crash records. This page aggregates public FMCSA roadside data and NHTSA vPIC decode for this VIN; it is informational and not a substitute for a title search or a hands-on inspection.
Full spec sheet (NHTSA vPIC decode)
| Make | PETERBILT |
| Model | 579 |
| Model Year | 2018 |
| 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 | PETERBILT MOTORS COMPANY The legal manufacturer of record in NHTSA’s database. |
| Plant City | DENTON Where the chassis was assembled — useful for verifying the VIN against the build record. |
| Plant State | TEXAS |
| Plant Country | UNITED STATES (USA) |
| Engine Model | ISX 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 | 15 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 | 9 | ⚠ High |
| Fatigued Driving (HOS) | 1 | — Minor |
| Unsafe Driving | 0 | ✓ Clean |
| Driver Fitness | 0 | ✓ Clean |
| Controlled Substances | 0 | ✓ Clean |
| Hazmat | 0 | ✓ Clean |
Operator & inspection history
Related vehicles
- 1UYVS25398P316032 UTIL (2 insp)
- 3H3V532C4FT071040 HYUNDAI TR (1 insp)
Related
Frequently Asked Questions
What does VIN 1XPBD49X1JD498836 decode to?
Why was 2018 PTRB 579 VIN 1XPBD49X1JD498836 placed out of service?
How complete is this data for VIN 1XPBD49X1JD498836?
Vetting a used truck purchase?
Tell us what you're looking for and we'll send matching new or used trucks — no obligation.