LISLE, Ill. — May 28, 2013 — Navistar, Inc. announced today that it has started shipping its first International^® TerraStar^® 4x4 units – one of the company’s newest additions to its comprehensive Class 4 – Class 8 product portfolio.

“This marks another milestone for Navistar as we continue our drive to deliver,” said Jack Allen, Navistar chief operating officer. “The addition of the TerraStar 4x4 to our portfolio not only allows us to offer more capabilities to our customers, but it positions International Truck to participate in a significant piece of the market where we haven’t previously had a presence.”

Launched in 2010 in a 4x2 configuration, the International TerraStar gives work truck buyers an exciting new product with a wide range of commercial duty features not offered in other trucks. Now, with a 4x4 option for the other 50 percent of the market, the TerraStar is a class unto itself while sharing the same rugged, durable and hardworking DNA as the medium-duty International^® DuraStar^®. The vehicle delivers additional commercial duty capability for a wide range of customer needs, including construction, utility, emergency, oilfield and other vocational applications.

Designed to last twice as long as competitive models, the TerraStar 4x4 delivers the performance and durability expected from the International brand. The TerraStar 4x4 provides class-leading frame rail strength of 80,000 psi, a commercial-duty Allison Optimized^™ 1000 Series transmission for maximum power output, a Fabco TC-28 gear-driven transfer case and an industry-leading 5-year unlimited mile warranty. The TerraStar is also available with a special financing offer with rates as low as 4.99 percent for up to 84 months.

About Navistar

Navistar International Corporation (NYSE: NAV) is a holding company whose subsidiaries and affiliates produce International^® brand commercial and military trucks, MaxxForce^® brand diesel engines and IC Bus^™ brand school and commercial buses. A subsidiary of the company also provides truck and diesel engine service parts. Another affiliate offers financing services. Additional information is available at www.Navistar.com/newsroom.

Media Contact:                                    Elissa Koc, 331-332-2669

Investor Contact:                     Heather Kos, 331-332-2406