AutoStatsIQ
Data through Oct 2026
Model year

2021 Peterbilt 320

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

Recalls (2)Complaints (0)Investigations (0)Bulletins (15)
Recall campaigns covering this model year217k vehicles or units across those campaigns
Owner complaints0Not enough peers on file
Severity indexNoneCrash, fire, injury or death per 100
First 24 months0Complaints in its first two years
Complaints over time

Complaints about the 2021 Peterbilt 320 by year filed

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

No campaigns match these filters.Reset filters
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.

No campaigns match these filters.Reset filters
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 2021 Peterbilt 320

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 2021 Peterbilt 320
CampaignFiledSubjectComponentVehiclesRemedy
22V-939Dec 16, 2022Suspension tracking rod brackets may fail and detach from the forward drive axle, causing the axle to become unstableSuspension15,658Repair or modification
21V-004Jan 11, 2021Steering column support structure may crack or break in certain right-hand, stand-up drive modelsSteering1,021Part replacement
Source: NHTSA ODI recalls file.
Look up a VIN at NHTSA
Owner complaints

What owners reported about the 2021 Peterbilt 320

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

    15 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."
    • 32-025 Nov 22, 2024 · Service Bulletin/Repair Instructions
      Info Only Unnecessary starter replacements can result from customer complaints regarding engine starting issues. A new Starter Troubleshooting Guide has been created to provide a comprehensive list of starting system checks, which should reduce unnecessary…
    • 7-700 Oct 22, 2024 · Warranty Program/Extension
      7/700 Service Agreement - Letter Only.
    • 45-064 Oct 18, 2022 · Service Bulletin/Repair Instructions
      Info Only - PACCAR is introducing Over-the-Air (OTA) software updates for engine MY17 and newer chassis equipped with Cummins X15, X12, ISX12, ISX12N, L9N, PX-7, and PX-9 engines The technology will leverage the existing Remote Diagnostic cs hardware to del…
    • 13-060 Aug 3, 2022 · Service Bulletin/Repair Instructions
      The service information for Bendix Air Dryer maintenance is being updated to include new procedures.
    • E290 Mar 31, 2022 · Service Bulletin/Repair Instructions
      This bulletin provides information on the EPA21 MX fuel injector cleaning procedure and includes suggested fuel system cleaning fluids. This procedure also provides information to determine if it is necessary to replace the fuel injectors.
    • TIB 98-020 Mar 18, 2022 · Service Bulletin/Repair Instructions
      Information Only – New Level 1 required tools are available to support MY21B MX engines.
    • 51-013 Feb 4, 2022 · Service Bulletin/Repair Instructions
      Due to major data carriers phasing out 3G networks, chassis currently utilizing first generation Peoplenet Mobile Gateway (PMG001) will experience severe 3G service degradation as early as January of 2022. Chassis currently utilizing 3G antennas as a primar…
    • E282 Dec 17, 2021 · Service Bulletin/Repair Instructions
      Information Only: Due to differences between the PACCAR MX-11 or MX-13 2021A and 2021B engines, technicians must be able to identify which of these engines are in a chassis.
    • 43-071 Sep 21, 2021 · Service Bulletin/Repair Instructions
      Fix-As-Fail – Due to undersupply issues, only a limited supply of Diesel Exhaust Fluid (DEF) sensors are available. As a temporary solution, after PACCAR confirms a DEF sensor is not available, a temporary software update will allow a vehicle to continue op…
    • 15-029 May 27, 2021 · Service Bulletin/Repair Instructions
      Information Only - Power steering reservoir cap may separate during removal when it is pulled upward instead of twisted.
    • 02-160 Feb 10, 2021 · Service Bulletin/Repair Instructions
      Information Only – Windshield washer pumps have a high No Trouble Found rate. Washer pumps may fail to spray due to a clogged filter.
    • 13-055 Oct 1, 2020 · Service Bulletin/Repair Instructions
      Fix as Fail: Peterbilt has introduced an improved mounting bracket for low mount air tanks for vehicles built between January 01, 2017 and July 06, 2020. Torsional vibration may stress the currently-installed brackets and cause them to fail near the bottom…
    • 32-015 Jun 8, 2020 · Service Bulletin/Repair Instructions
      Information Only: This bulletin provides dealers with a battery warranty quick reference guide to ensure the appropriate tests for battery warranty are performed in order to prevent battery warranty claims filed with incorrect or incomplete information.
    • 43-067 Jun 10, 2020 · Service Bulletin/Repair Instructions
      Fix as Fail: For all conventional models, except 387/587, equipped with Side-of-Cab (“SOC”) exhaust and built from 03/6/2006 to 1/20/2020, the clamps that secure the SOC exhaust stacks may not be tightened properly. This may allow the exhaust stack to rota…
    Source: NHTSA manufacturer communications files.
    About service bulletins