This story appears in the Jan. 25 print edition of Transport Topics. MELROSE PARK, Ill. — Navistar Inc. said it will introduce a new version of its top over-the-road tractor this year called the ...

This story appears in the Nov. 19 print edition of Transport Topics. WASHINGTON — Navistar International Corp. installed its first Cummins ISX15 engine in a ProStar Plus tractor on Nov. 15, with ...

Navistar Inc., at a press event in Louisville, Ky., on Wednesday, March 24, introduced the new International ProStar+, which has improved aerodynamics and a nearly 1,300-pound weight reduction from ...

Navistar Inc., March 24 introduced the new International ProStar+, which has improved aerodynamics and a nearly 1,300-pound weight reduction from the existing ProStar model. “Along with improving the ...

Navistar unveiled Friday its ProStar ES, a truck the company bills as “the best fuel efficiency package in the industry.” Navistar says its ProStar ES (short for efficiency specification), offers ...

Navistar announced this week it will offer the Tremec 10-speed manual transmission in its International ProStar models equipped with the company’s 13-liter engine. Tremec offers a wide range of high ...

Navistar is adding a new transmission/engine combination for its International ProStar Class 8 highway tractor model: Allison Transmission’s fully automatic TC10 gearbox married to the Cummins ISX15 ...

Navistar Inc. disputes allegations that it didn’t thoroughly test its MaxxForce EGR engines — allegations that surfaced in a lawsuit where a jury last week awarded $30.8 million in damages — including ...