VIN 1XPDD49X2LD633521 — 2020 Peterbilt 520
Recorded with Mg Bros Trucking Llc · USDOT 3994207
Vehicle identity
| VIN | 1XPDD49X2LD633521 |
| Model year | 2020 |
| Make | Peterbilt |
| Model | 520 |
| Vehicle type | TRUCK TRACTOR |
| License plate | CA YP31414CA (California) |
| Last inspected | 2025-08-20 |
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 |
|---|---|---|---|
| 2025-08-20 | 1XPDD49X2LD633521 | CA YP31414CA | MG BROS TRUCKING LLC · USDOT 3994207 |
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
Mg Bros Trucking Llc Active
- USDOT
- 3994207
- MC
- 1499274
- Status
- Active
- Type
- Motor Carrier
- Based in
- Yuba City, CA
- Power units
- 2
- Drivers
- 2
- Inspections (24 mo)
- 43
- Crashes (24 mo)
- 1
- Vehicle OOS rate
- 31.3%
Carrier recorded at the latest inspection in the available records (2025-08-20). 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.
What this means
1XPDD49X2LD633521 is a 2020 Peterbilt 520 operated by Mg Bros Trucking Llc (USDOT 3994207). License plate on its inspection records: CA YP31414CA. 1 roadside inspection on FMCSA record. No out-of-service violations are recorded for this VIN in the available inspection records. Other violations may still be present. 4 NHTSA recalls match the year/make/model.
What this VIN is
2020 Peterbilt 520 is the vehicle NHTSA’s VIN registry returns for 1XPDD49X2LD633521. 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 1 FMCSA roadside inspection (most recent activity 2025-08-20). Across those inspections it was never placed out of service. Its most recent inspection (2025-08-20) was in Oregon, a Level III — driver and paperwork only. No violations were recorded against this vehicle in our inspection window.
Operator history
Operated by Mg Bros Trucking Llc (USDOT 3994207) on 2025-08-20 — 1 inspection, none out of service.
Recalls & owner complaints
4 NHTSA safety recalls have been issued for the 2020 Peterbilt 520 platform. The most recent, 21V720000, concerns paccar incorporated (paccar) is recalling certain 2020-2021 peterbilt 520 vehicles. the quick release valve on the rear brake signal hose m… Recalls are issued by make/model/year and may cover only a specific build range, so a match here does not confirm this exact VIN was included. Owners have filed 3 complaints with NHTSA against this make/model/year.
Full spec sheet (NHTSA vPIC decode)
| Make | PETERBILT |
| Model | 520 |
| Model Year | 2020 |
| 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. |
Operator & inspection history
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4 recall(s) matching this make/model/year
Issue: PACCAR Incorporated (PACCAR) is recalling certain 2020-2021 Peterbilt 520 vehicles. The quick release valve on the rear brake signal hose may be missing. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 121, "Air Brake Systems."
Risk: A missing quick release valve cannot ensure correct rear brake release timing, increasing the risk of a crash or injury.
Fix: Dealers will inspect the vehicles for a missing quick release valve, and install one if necessary, free of charge. Owner notification letters were mailed on October 7, 2021. Owners may contact PACCAR's customer service at 1-940-591-4220 (Peterbilt)
Issue: PACCAR Incorporated (PACCAR) is recalling certain 2020-2021 Peterbilt 520 vehicles. The stability control brake relay may have the Spring Brake Modulating (SBM) Valve or the lift axle hose incorrectly connected.
Risk: A stability control event meant to only actuate the ABS controlled wheel ends could actuate lift axle brakes or modulate park brake chambers and could possibly de-stabilize the vehicle, increasing the risk of a crash.
Fix: PACCAR will notify owners, and dealers will inspect the suspect chassis and correct the brake relay plumbing if needed, free of charge. PACCAR has issued owners an interim notification on January 4, 2020. Owner notification letters were mailed on J
Issue: PACCAR Incorporated (PACCAR) is recalling certain 2020 Peterbilt 520 vehicles. Incorrect bolts may have been used to secure the steering assist cylinder bracket, possibly allowing the bolts to loosen.
Risk: Loose bolts may cause the bracket to flex or break, potentially damaging adjacent components or locking up the steering, increasing the risk of crash.
Fix: PACCAR will notify owners, and dealers will install hardware with thread adhesive and replace any components damaged by the improperly secured steer assist bracket, free of charge. The recall began August 17, 2020. Owners may contact PACCAR custome
Issue: PACCAR Incorporated (PACCAR) is recalling certain 2020 Kenworth T800, T880 and W990 and Peterbilt 348, 367, 389, 520, and 567 vehicles. The forward rear axle output shafts may have been improperly heat treated during manufacturing, possibly resulting in the shafts fracturing.
Risk: If the rear axle output shaft fractures, the shaft or interaxle driveline could detach and become a road hazard, increasing the risk of a crash.
Fix: PACCAR will notify owners, and dealers will inspect and replace the output shafts, as necessary, free of charge. The recall began February 19, 2020. Owners may contact Kenworth customer service at 1-425-828-5888 or Peterbilt customer service at 1-
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