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 ...

Navistar Inc. has announced a new fuel-efficiency package for its International ProStar model, marking the latest enhancement to the company’s lineup. The ProStar ES, which stands for efficiency ...

International Truck unveiled a new fuel efficiency package for its ProStar model, called ProStar ES. Short for efficiency specification, the ES package combines enhanced aerodynamics with improved ...

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 ...

Truck and engine maker Navistar is rolling out a new fuel efficiency package for its International ProStar highway tractor, dubbed the ProStar ES – a designation that stands for “efficiency ...

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 ...

MONTREAL, Que. -- Designed expressly for the Canadian market where higher gross weights are allowed, Navistar rolled out a 110,000-lb version of the ES spec at Montreal's Expocam on Friday. The ...

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 ...

An issue that could cause exhaust pipes to detach from certain trucks has prompted Navistar to issue a recall of more than 24,000 International tractors, according to documents from the National ...

Verbal skirmishing between Navistar International and its competitors over their two paths toward meeting new exhaust emissions limits has included charges that Navistar's 2010 diesels will run hot.

Navistar, Inc. (Navistar) is recalling certain 2001-2003 International 9100i, 2004-2009 International 9200i, 2009, 2011-2012, 2017 International ProStar, and 2021 International RH vehicles. The ...