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Officials from truck and engine maker Navistar Inc. have disputed fuel-efficiency claims made by its rivals and said that an independent testing agency has found its over-the-road International ProStar model has better “fluid economy” than three of its rivals.

Daimler Trucks North America announced a recall of up to 8,747 recently built Freightliner Cascadia trucks and Western Star 4900s for possible seat problems and 1,000 Cascadias and Business Class M2s for possible steering wheel problems.

German truck maker MAN SE said Volkswagen AG has boosted its majority stake in the company to 73% of its common shares, Reuters reported Friday.

SAVANNAH, Ga. — Great Dane Trailers on Wednesday broke ground on a major expansion of its corporate offices here.

U.S. manufacturing activity improved in March, the Institute for Supply Management said Monday.

An index of manufacturing activity in the Chicago area decreased in March, the Institute for Supply Management-Chicago said Friday.

Trailer manufacturer Wabash National Corp. said Tuesday it will acquire Walker Group Holdings for $360 million.

U.S. manufacturing activity slipped from a seven-month high in February but showed continued expansion, the Institute for Supply Management said Thursday.

An index of manufacturing activity in the Chicago area increased in February, the Institute for Supply Management-Chicago said Wednesday.

TAMPA, Fla. — Bendix Commercial Vehicle Systems said it has distributed the first of more than 130,000 kits to fix a defective brake-system valve, but said the process could take about six months to complete as manufacturers, dealers and fleets scramble to repair more than 67,000 affected U.S. and Canadian trucks.