AutoStatsIQ
Data through Oct 2026
Model year

2021 International Prostar

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

Recalls (0)Complaints (0)Investigations (0)Bulletins (20)
Recall campaigns covering this model year0No recall campaign lists this model year
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 International Prostar 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

No recall campaign lists the 2021 International Prostar

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

Source: NHTSA ODI recalls file.
Look up a VIN at NHTSA
Owner complaints

What owners reported about the 2021 International Prostar

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

    20 manufacturer communications cover this model year

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

    • IK2600083 Jul 24, 2026 · Service Bulletin/Repair Instructions
      The new clusters in the post-2007 models store the mileage in memory. When replacing the cluster, follow these instructions to program the current vehicle mileage into the memory of the new cluster.
    • IK2600255 Apr 23, 2026 · Service Bulletin/Repair Instructions
      This document provides guidance for assessing the feasibility of implementing a customer-requested change to an engine or vehicle parameter/feature. Customer requested changes will be approved in accordance with the requirements specified in 40 CFR Part 103…
    • IK4300035 Feb 3, 2026 · Service Bulletin/Repair Instructions
      This tool is designed to compare Diamond Logic feature data across multiple vehicle configuration files. It allows users to quickly load files either manually or directly from the Diamond Logic Builder Vehicles folder using VIN-based selection. As files are…
    • IK2600255 Jan 26, 2026 · Other
      This document provides guidance for assessing the feasibility of implementing a customer-requested change to an engine or vehicle parameter/feature. Customer requested changes will be approved in accordance with the requirements specified in 40 CFR Part 103…
    • IK2600090 Feb 5, 2026 · Other
      New CARB Idle Reduction Change Request
    • IK2600047 Jan 2, 2026 · Service Bulletin/Repair Instructions
      Engine replacements for all International engines will need to follow this procedure.
    • IK2600279 Dec 19, 2025 · Service Bulletin/Repair Instructions
      This document provides: Steps to take when switch pack programming fails, or when switch pack disappears after body control module update Sample scenarios Additional information to assist readers in understanding DLB switch pack programming
    • IK1600272 Dec 19, 2025 · Service Bulletin/Repair Instructions
      This document will guide the user through a step-by-step procedure for detecting water leaks in vehicle cabs and windshields using an ultrasonic sound detector.
    • IK1201009 Nov 6, 2025 · Service Bulletin/Repair Instructions
      In some geographic areas, ambient temperatures reaching below 15°F (-10 °C), including high levels of humidity, an operator may experience engine stalling, low performance, and or poor aftertreatment performance. This is caused by condensation accumulating …
    • IK0600030 Dec 5, 2025 · Service Bulletin/Repair Instructions
      This document will guide the user through understanding Prop Shaft Codes and understanding the variations of prop codes. (Metric Prop codes start with the number a 4 and Non metric Prop codes start with a 2.)
    • IK3400001 Aug 28, 2025 · Service Bulletin/Repair Instructions
      Title: Service Portal iKNow Feedback Case Types Applies To: All
    • IK1400005 Aug 25, 2025 · Service Bulletin/Repair Instructions
      Title: Driveline Information Center and Troubleshooting Procedures Applies To: All Vehicles
    • IK1900022 Jul 18, 2025 · Service Bulletin/Repair Instructions
      Title: A/C Refrigerant and Oil Capacities Applies To: All current models
    • IK1200716 Jul 7, 2025 · Service Bulletin/Repair Instructions
      Title: Engine Emission Label Replacement, Certificate of Conformance and Clean Idle Sticker Addition Procedure Applies To: All Navistar Powered Trucks Requesting Engine Emission Label Replacement, Certificate of Conformance and/or Clean Idle Sticker, Clean …
    • IK0900157 Jul 17, 2025 · Service Bulletin/Repair Instructions
      Title: Fan belt replacement guidelines for frayed edges Applies To: All Models
    • IK0500054 Jun 4, 2025 · Service Bulletin/Repair Instructions
      Title: Steering Gear Seal Repair Guidelines Applies To: Steering gears
    • IK2600069 May 20, 2025 · Service Bulletin/Repair Instructions
      Title: How to Request a Horsepower Quote Applies To: All International and Cummins Electronic engines
    • IK0300078 May 9, 2025 · Service Bulletin/Repair Instructions
      This document reminds technicians of the critical relationship between the truck's suspension and the driveline operating angles. The information applies to diesel, gas, and electric vehicles.
    • IK1200716 Apr 24, 2025 · Emissions
      Applies To: All Navistar Powered Trucks Requesting Engine Emission Label Replacement, Certificate of Conformance and/or Clean Idle Sticker, Clean Truck Check
    • IK1400023 Oct 8, 2024 · Service Bulletin/Repair Instructions
      This article addresses chassis lean conditions on all chassis. This does not include any diagnostics for body leans such as a cab lean. Keep in mind that a chassis lean may cause or accentuate a cab lean. Filling out the printable form and using the notes i…
    Source: NHTSA manufacturer communications files.
    About service bulletins