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#BS-2021-INTLT-1D282021 International LTProblems, Recalls & Reliability
Based on reports from 7 owners and 13 recalls for this exact model.
Data updated ·NHTSA complaints through October 19, 2026
Preliminary Verdict
Green Light
Based on 7 complaints, 3 crashes, 0 fires, and 13 recalls.
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Mechanic Inspection Checklist
1 owners reported electrical system:instrument panel:speedometer/odometer issues — failures commonly reported around 600K miles.
30,000-Mile Cost Projection
Best Case
Most Likely
Worst Case
Top cost driver: Electrical System:instrument Panel:speedometer/odometer (1 reports).
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Owner Intelligence
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Buyer Lot Checklist
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Buy / Skip Verdict
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Where the complaints fall
2021 International LT: Known Issues & Problem Areas
Electrical System:instrument Panel:speedometer/odometer Issues
Electrical System:instrument Panel:speedometer/odometer complaints account for 14% of all reports filed for the 2021 International LT, with 1 owners filing complaints with NHTSA. The median mileage at time of complaint is 600,000 miles, suggesting issues tend to surface around the 600K-mile mark.
Engine Issues
Engine complaints account for 14% of all reports filed for the 2021 International LT, with 1 owners filing complaints with NHTSA. Owners should pay attention to engine-related symptoms during test drives and pre-purchase inspections.
Forward Collision Avoidance: Adaptive Cruise Control Issues
Forward Collision Avoidance: Adaptive Cruise Control complaints account for 14% of all reports filed for the 2021 International LT, with 1 owners filing complaints with NHTSA. Owners should pay attention to forward collision avoidance: adaptive cruise control-related symptoms during test drives and pre-purchase inspections.
Forward Collision Avoidance: Automatic Emergency Braking Issues
Forward Collision Avoidance: Automatic Emergency Braking complaints account for 14% of all reports filed for the 2021 International LT, with 1 owners filing complaints with NHTSA. Owners should pay attention to forward collision avoidance: automatic emergency braking-related symptoms during test drives and pre-purchase inspections.
Data sourced from NHTSA owner complaints and community reports. The full report analyzes severity, repair costs, and failure patterns for each category.
Complaint trend by year
Complaints filed with NHTSA by year for the 2021 International LT. Recent trend: decreasing.
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Recall History (13 recalls)
ENGINE
Navistar, Inc. (Navistar) is recalling certain 2018-2021 International LoneStar and 2017-2021 International LT vehicles. The battery ground cable ring terminal at the frame connecting point may break, resulting in a loss of electrical power and unintended engine shutdown without warning.
ENGINE
Navistar, Inc. (Navistar) is recalling certain 2021 International LT vehicles equipped with a Cummins X15 engine. The capscrews that attach the flywheel to the crankshaft may have been improperly torqued, allowing the flywheel to detach.
PARKING BRAKE
Navistar, Inc. (Navistar) is recalling certain 2021 International LT and International RH vehicles. The spring inside the spring brake chamber may allow the pressure plate to shift and wear a hole through the diaphragm.
SERVICE BRAKES, AIR
Navistar, Inc. (Navistar) is recalling certain 2021 International LT, RH, MV, and HV vehicles equipped with Bendix pressure switches. A retainer was not properly seated in the SC-3 single check valve and may not provide source air isolation when pressure is applied. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 121, "Air Brake Systems."
ENGINE
Navistar, Inc. (Navistar) is recalling certain 2019-2021 International LT and RH trucks. The wrist pin may crack and cause connecting rod failure.
+ 8 more recalls in the full report
Recall severity analysis & seller scripts
The full report rates each recall's severity and gives you scripts for asking the seller about recall completion.
About this data
NHTSA Complaints
Federal database of owner-filed safety complaints. 7 records for this vehicle.
NHTSA Recalls
Manufacturer-issued safety recalls. 13 recalls found for this vehicle.
Repair Cost Data
Real-world repair costs from owner reports and independent databases.
Last updated . NHTSA complaints received through October 19, 2026.
Other International LT Model Years
View all International LT years →2021 International LT: Frequently Asked Questions
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10 sections of AI analysis based on 7 owner reports. Know before you buy.