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O Trucking
International Truck Class 8

International Truck HX Series

Severe-duty vocational • Production 2016–present

Day cab Logging, oilfield, severe duty, heavy haul, mining
In production
Class
Class 8
Type
Severe-duty vocational
Production
2016–present
GVWR
44,000-150,000 lb (with permits)

About the International Truck HX Series

The International HX Series is International's premium severe-duty vocational truck, introduced in 2016 to compete with the Western Star 49X, Mack Granite, and Kenworth T880. The HX is used for logging, oilfield service, heavy-haul, mining, and severe-duty construction. Cummins X15 is the dominant engine choice; International A26 is available as an alternative. The HX represents International's recovery from the MaxxForce engine era — it's a fresh design with proven Cummins power.

Overview

The International HX Series is International's premium severe-duty vocational truck, introduced in 2016 to compete with the Western Star 49X, Mack Granite, and Kenworth T880. The HX is used for logging, oilfield service, heavy-haul, mining, and severe-duty construction. Cummins X15 is the dominant engine choice; International A26 is available as an alternative. The HX represents International's recovery from the MaxxForce engine era — it's a fresh design with proven Cummins power.

Specifications
Manufacturer
International Truck
Class
Class 8
Vehicle type
Severe-duty vocational
Cab type
Day cab
Production years
2016–present
Applications
Logging, oilfield, severe duty, heavy haul, mining
Typical engines
Cummins X15, International A26
Typical transmissions
Allison automatic, Eaton manual
GVWR range
44,000-150,000 lb (with permits)
Design and engineering

Heavy-duty steel cab with set-back front axle. Tall, upright cab for vocational driver visibility. Reinforced chassis options support up to 150,000 lb GVWR with permits. Optional crew cab for work crews. The HX shares its cab platform with the HV (slightly less heavy-duty) and the LT (highway tractor).

Generations and major changes
HX Original
2016–present
Replaced Workstar in severe-duty segments
Market position and popularity

HX has gained significant share in oil-field and logging segments since launch. International's strong rural and vocational dealer network supports the truck. Used HX trucks are starting to appear in the market (2024+) as early units age.

Who buys this truck

Logging operators, oil-field service, severe-duty construction, heavy-haul specialists, owner-operators in vocational segments.

Common problems and reliability notes

Cummins X15 emissions issues (same as all Cummins). Limited long-term reliability data on International A26 variants. Severe-duty wear on chassis components.

Pros and cons

✓ Pros

  • • Strong vocational chassis for severe-duty
  • • Cummins X15 reliability
  • • Heavy-haul capability up to 150K lb
  • • Strong rural/vocational dealer network

⚠ Cons

  • • Lower resale than Western Star or Mack in vocational
  • • International A26 long-term reliability still unproven
  • • Smaller national dealer footprint than Freightliner

Related

Frequently Asked Questions

What is the International Truck HX Series?
The International HX Series is International's premium severe-duty vocational truck, introduced in 2016 to compete with the Western Star 49X, Mack Granite, and Kenworth T880. The HX is used for logging, oilfield service, heavy-haul, mining, and severe-duty construction. Cummins X15 is the dominant engine choice; International A26 is available as an alternative. The HX represents International's recovery from the MaxxForce engine era — it's a fresh design with proven Cummins power.
What years was the International Truck HX Series produced?
International Truck HX Series production started in 2016. The model remains in production today. There have been 1 distinct generations or major updates during this production run, each with significant changes in styling, engines, or features. Both new and used International Truck HX Series trucks are commonly available.
What engines come in the International Truck HX Series?
International Truck HX Series trucks typically come with one of these engines: Cummins X15, International A26. All are 6-cylinder inline diesel engines, ranging from 11-16 liter displacement. Engine choice depends on application (long-haul, regional, vocational) and buyer preference. Each engine choice has different reliability, fuel economy, and parts/service ecosystem implications — see our engine guides at /resources/guides/ for deeper comparisons.
Is the International Truck HX Series reliable?
Like all commercial diesels, the International Truck HX Series has known issue patterns: Cummins X15 emissions issues (same as all Cummins). Limited long-term reliability data on International A26 variants. Severe-duty wear on chassis components.… For full known-issue details and the recall/complaint history broken down by model year, see the dedicated sections on this page.
Who is the typical International Truck HX Series buyer?
Logging operators, oil-field service, severe-duty construction, heavy-haul specialists, owner-operators in vocational segments.
What are the most common International Truck HX Series recalls and complaints?
Open NHTSA recalls and owner complaints for the International Truck HX Series vary by model year. See the table above for year-by-year breakdown with direct links to the recall and complaint detail pages. Common patterns across all years include DEF/SCR aftertreatment issues (on 2010+ models), EGR cooler failures at high mileage, and turbocharger boost-pressure faults — these affect most modern commercial diesels, not just this model.

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