AutoStatsIQ
Data through Oct 2026
Model year

2026 Peterbilt 520

Body and fuel not decoded. Owner complaints on file from no date to no date.

Recalls (2)Complaints (0)Investigations (0)Bulletins (29)
Recall campaigns covering this model year256k vehicles or units across those campaigns
Owner complaints0Not enough peers on file
Severity indexNoneCrash, fire, injury or death per 100
First 24 monthsOpenWindow has not closed yet
Complaints over time

Complaints about the 2026 Peterbilt 520 by year filed

Owner complaints about this model year, by the year they were filed with NHTSA.

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Source: NHTSA ODI complaints file. The lighter column runs through October.
Components

Complaints by component

Owner complaints by component. Hover or focus a bar for the crash, fire, injury or death count.

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Source: NHTSA ODI complaints file. A complaint can name more than one component; it is counted under the first.
Recalls

2 recall campaigns cover the 2026 Peterbilt 520

Check a specific vehicle by VIN on NHTSA's site: a campaign may cover only part of a model year's production.

Recall campaigns for the 2026 Peterbilt 520
CampaignFiledSubjectComponentVehiclesRemedy
26V-022Jan 19, 2026Right-hand stand-up (RHSU) configuration on the steering cross-shaft may become stressed and failSteering219Part replacement
25V-436Jun 26, 2025Tail brake light, upper and lower beam headlights, reverse light, and turn signal may not illuminate as intendedLighting56,260Software update
Source: NHTSA ODI recalls file.
Look up a VIN at NHTSA
Owner complaints

What owners reported about the 2026 Peterbilt 520

The full text of every complaint filed with NHTSA about this model year, newest first. Complaints are filed by owners and are not verified by NHTSA; NHTSA removes personal details before publishing.

0 complaints on file.

    Source: NHTSA ODI complaints file.
    Investigations

    NHTSA has not opened an investigation on this model year

    Source: NHTSA ODI investigations file.
    All investigations
    Service bulletins

    29 manufacturer communications cover this model year

    Technical service bulletins and other notices the manufacturer sent to dealers. A bulletin is not a recall.

    • P001 Sep 11, 2026 · Service Bulletin/Repair Instructions
      "Kenworth: Dealers should check the chassis list and SIR weekly for VIN changes. 2 chassis added to the chassis list. Peterbilt: Dealers should check the chassis list and SIR weekly for VIN changes. 10 chassis added to the chassis list."
    • P001 Sep 3, 2026 · Service Bulletin/Repair Instructions
      "KW: The chassis list has been updated to include 1 chassis. The total chassis count is now 53. A link to the PACCAR Powertrain Prognostics Webcast has been added in the Links section. PB: The chassis list has been updated to include 8 chassis. The total c…
    • P001 Aug 27, 2026 · Service Bulletin/Repair Instructions
      "KW: The chassis list has been updated to include 1 chassis. The total chassis count is now 53. A link to the PACCAR Powertrain Prognostics Webcast has been added in the Links section. PB: The chassis list has been updated to include 8 chassis. The total c…
    • 43-089 Aug 21, 2026 · Service Bulletin/Repair Instructions
      This optional software update is expected to be available after 08/28/2026.
    • P001 Aug 19, 2026 · Service Bulletin/Repair Instructions
      "PB: The chassis list has been updated to include 11 chassis. The total chassis count is now 122. KW: The chassis list has been updated to include 3 chassis. The total chassis count is now 52."
    • P001 Aug 13, 2026 · Service Bulletin/Repair Instructions
      "KW -The chassis list has been updated to include 2 chassis. Total chassis count is now 49. PB - The chassis list has been updated to include10 chassis. The total chassis count is now 111."
    • 24KWC/24PBC Aug 13, 2026 · Service Bulletin/Repair Instructions
      Updated Sheppard Steering Gear Classification Tool link in Inspection Procedure
    • 43-089 Aug 13, 2026 · Service Bulletin/Repair Instructions
      This optional software update is expected to be available in late August 2026 for chassis equipped with EPA 2024 EMY 2024-2026 PACCAR MX-11 and MX-13 engines. This bulletin will be updated when the software is ready. This update provides customers with addi…
    • 43-089 Aug 13, 2026 · Service Bulletin/Repair Instructions
      This optional software update is expected to be available in late August 2026 for chassis equipped with EPA 2024 EMY 2024-2026 PACCAR MX-11 and MX-13 engines. This bulletin will be updated when the software is ready. This update provides customers with addi…
    • 46-029 Aug 13, 2026 · Service Bulletin/Repair Instructions
      When DAVIE version 26.21.2 is used to update the VECU3 to software version 3.4.46.0, the VECU3 5071 component group may display as --- after programming.
    • 43-089 Aug 1, 2026 · Service Bulletin/Repair Instructions
      This optional software update is expected to be available on 08/07/26 for chassis equipped with EPA 2024 EMY 2024-2026 PACCAR MX-11 and MX-13 engines. This update provides customers with additional time to service their trucks before a DEF-related derate oc…
    • 43-089 Jul 21, 2026 · Service Bulletin/Repair Instructions
      An optional software update is expected to be available on or after 07/31/26 for chassis equipped with EPA 2024 engine model year (EMY) 2024-2026 PACCAR MX-11 and MX-13 engines. This update provides customers with additional time to service their trucks bef…
    • 25KWD 25PBD Jul 2, 2026 · Service Campaign
      Additional US chassis have been added, along with additional Canadian chassis under identical safety recall 26PACB.
    • 99-052 Jul 2, 2026 · Service Bulletin/Repair Instructions
      There is an update to the Base Emissions Warranty Limits table [PR1.1]and general certification information in certain Engine Model Year (EMY) 2026 MX-11 and MX-13 Operator’s Manuals.
    • P001 Jun 30, 2026 · Service Campaign
      Leveraging PACCAR’s advanced Prognostic prediction algorithms, certain PACCAR MX-11 and MX-13 EMY 2024-2026 engines will receive proactive replacement instructions for the PM sensor to maximize uptime and maintain optimal performance.
    • 26PACA May 20, 2026 · Service Bulletin/Repair Instructions
      ​Updated cross shaft and bearing installation steps have been added to the repair procedures.
    • 46-028 May 14, 2026 · Service Campaign
      Certain Peterbilt Model 520 BEV chassis with an Accelera Power Control and Accessory System (PCAS) were manufactured without a check valve in the power steering system.
    • E340 Apr 10, 2026 · Emissions
      KW Certain vehicle model year 2026 Kenworth chassis equipped with EMY2025 PACCAR MX engines require an amended engine label. The engine label is now available for order and installation. PB Certain vehicle model year 2026 Peterbilt chassis equipped with EMY…
    • E339 Apr 10, 2026 · Emissions
      EMY25 Engine Label Replacement - (KW) Certain vehicle model year 2026 Kenworth chassis equipped with EMY2025 PACCAR MX engines require a revised engine label update. (PB) Certain vehicle model year 2026 Peterbilt chassis equipped with EMY2025 PACCAR MX engi…
    • E326 Apr 1, 2026 · Emissions
      EPA17-24 MX Fuel Injector Connector - This bulletin has been revised to include all EPA17-24 and CARB24 PACCAR MX engines.
    • 15-034 Feb 13, 2026 · Service Campaign
      Battery Electric Vehicle (BEV) de-energizing and re-energizing procedures have been added to the bulletin for Peterbilt Model 520 BEV.
    • 26PACA Feb 28, 2026 · Service Campaign
      KW: ​Certain Kenworth L770 chassis may have Right-Hand (RH) steering cross shaft bearing mounting holes that are misaligned, resulting in increased stress on the steering cross shaft on the Right-Hand Stand-Up (RHSU) controls configuration. Failure of the R…
    • 46-024 Jan 30, 2026 · Service Bulletin/Repair Instructions
      CARB Label Procedure Update The repair procedure removes the aftermarket change request, adds GHG label inspection, and directs dealers to open a TCS365 case to order new labels. Warranty codes for inspection and label replacement have been updated. Cert…
    • 25PACF Dec 23, 2025 · Service Bulletin/Repair Instructions
      Parts and procedures are now available for all affected chassis equipped with Vehicle Electronic Control Unit (VECU) part number Q21-1157-013-011 / Q21-1157-013-013 / Q21-1157-002-002 / Q21-1157-004-004 / Q21-1157-006-006 / Q21-1157-009-009. See attached Pa…
    • 46-024 Dec 31, 2025 · Service Bulletin/Repair Instructions
      Certain Battery Electric Vehicles that are subject to California Air Resources Board (CARB) regulations have Vehicle Emissions Control Information (VECI) labels that are missing the CARB Enhanced EV and FCEV Statement.
    • 15-034 Dec 23, 2025 · Service Bulletin/Repair Instructions
      Certain Kenworth L770 and Peterbilt Model 520 chassis may encounter a slight increase in effort in the right-hand steering shaft when turning the wheel.
    • 46-019 Nov 4, 2025 · Service Bulletin/Repair Instructions
      Repair procedures and warranty information for model 520EV are now available. Certain Peterbilt 579EV and 520EV chassis have the First Responder Guide (FRG) label incorrectly showing the cut loop on the wrong side and are missing the Low Voltage Battery Dis…
    • 01-090 Nov 4, 2025 · Service Bulletin/Repair Instructions
      Repair procedures and warranty information for model 520EV are now available. The cab heater coolant system on Peterbilt 579EV and 520EV models may not deaerate properly, causing pump malfunctions and inadequate cab heating. Update coolant deaeration return…
    • 25PACF Aug 1, 2025 · Service Campaign
      Procedures are now available for Phase 1 chassis equipped with Internal Combustion Engines (ICE) and Vehicle Electronic Control Unit (VECU) part number Q21-1157-013-011 / Q21-1157-013-013. Parts and procedures for Phase 2 chassis will be available at a late…
    Source: NHTSA manufacturer communications files.
    About service bulletins