Detroit Diesel Celebrates 75,000th Diesel Engine for Penske Truck Leasing Corporation

DETROIT, Aug. 15, 2005 -- Detroit Diesel Corporation (DDC) today celebrated the shipment of its 75,000th Series 60(R) engine to Penske Truck Leasing (PTL), signifying a major milestone in the relationship between DDC and PTL.

"This is a tremendous achievement for us at Detroit Diesel given the extensive history we have with Penske Truck Leasing," said Carsten Reinhardt, president and chief executive officer of Detroit Diesel Corporation. "It's a relationship that continues to flourish and we are very proud to be able to continue to supply the company with engines that provide excellent fuel economy and great performance."

"Over the last 15 years, Penske and Detroit Diesel have worked together to deliver quality products and services to our customers," said Brian Hard, president of Penske Truck Leasing. "We have focused on the products and support that our customers need to compete effectively in their businesses. We are proud of our relationship with Detroit Diesel and we look forward to the next 75,000 engines."

Penske Truck Leasing took delivery of its first Series 60 engine in 1990 with a total order of 47 units. With each passing year, the annual delivery of engines increased and just recently the number of engines delivered achieved the 75,000th mark.

"In 2004, PTL took delivery of more than 8,200 Series 60 engines and we look forward to exceeding that number in 2005," Reinhardt concluded.

Since 1992, the Series 60 engine has been the most popular heavy-duty truck engine in the Class 8 market based on R.L. Polk registrations. One of the reasons for the popularity of this engine is its significant fuel economy savings over other engines in the same class. The Series 60 engine is available in vehicles produced by business units of Freightliner LLC and other premium vehicle manufacturers such as those in the firetruck, emergency, motorcoach and motorhome markets.

Penske Truck Leasing is a leading global transportation services provider. The company operates more than 200,000 vehicles and serves customers from nearly 1,000 locations in the United States, Canada, Mexico, South America and Europe. Product lines include full-service leasing, contract maintenance, commercial and consumer rental, transportation and warehousing management, and supply chain management solutions. Penske Truck Leasing's annual revenue is approximately U.S. $3.5 billion. The company can be reached at http://www.pensketruckleasing.com/ .

Detroit Diesel Corporation is the leading manufacturer of on-highway heavy-duty diesel engines for the commercial truck market. The company offers a complete line of engines from 170 to 515 horsepower for the on-highway and vocational markets. Through its corporate headquarters in Detroit, Michigan, Detroit Diesel is engaged in the design, manufacture, sale and service of these products, in addition to supporting alternative and hybrid engine strategies for the commercial truck marketplace. Detroit Diesel is a subsidiary of DaimlerChrysler and part of the Freightliner Group of companies. Freightliner LLC is the largest manufacturer of heavy-duty trucks in North America and a leading manufacturer of medium-duty and specialized, commercial vehicles.