BELLEVUE, Wash. (Aug. 10, 2005) — Paccar Inc. has been selected by Industry Week magazine as one of the 50 best manufacturing companies in the United States.

“It is an honour for Paccar to be recognized with other leading companies including Dell, Johnson & Johnson, Chevron and 3M,” said Mark C. Pigott, chairman and chief executive officer. “As the company celebrates its 100-year anniversary during 2005, this wonderful recognition reflects the dedication and talent of Paccar employees worldwide.”

To select the top 50 performing companies, Industry Week evaluated three-year performance measures including revenue growth, profit margin, asset turnover, inventory turns, return on assets and return on equity. Performance for 2004 was weighted more heavily in the survey.

“Paccar’s global diversification has been integral to the company’s steady revenue and profit growth,” noted Mike Tembreull, vice chairman. “During 2004, over 50 percent of Paccar’s revenues were generated outside the United States. During the past decade, Paccar’s earnings per share have grown by 16% per annum versus 7% for the S&P 500. Paccar’s return on equity has averaged 21.5% during the last three years and was 27.9% for 2004.”

Paccar is a leader in the design, manufacture and customer support of high-quality light-, medium- and heavy-duty trucks under the Kenworth, Peterbilt and DAF nameplates.