John J. McDonnell, Jr. Elected to DealerTrack Board of Directors

LAKE SUCCESS, N.Y., Aug. 3, 2005 -- DealerTrack Holdings, Inc. today announced that John J. McDonnell, Jr. has been elected to its board of directors.

"We are delighted to welcome Jack to the DealerTrack board," said Mark O'Neil, DealerTrack's chairman of the board and chief executive officer. "He is a pioneer in the telecommunications industry, with broad experience as the CEO of public companies in transaction processing technology. We are confident that Jack will provide the board with valuable perspective."

Mr. McDonnell is the founder, chairman and CEO of TNS, Inc., a leading provider of data communications services to processors of credit card, debit card, and ATM transactions worldwide. Previously, he served as chairman and CEO of PaylinX Corp., a software provider for transaction processing, from November 1999 until it was sold to CyberSource Corp. in September 2000. He remains a director of CyberSource.

Mr. McDonnell was the recipient of KPMG Peat Marwick LLP's 1997 High Tech Entrepreneur Award and the Rensselaer Polytechnic Institute 2002 Entrepreneur of the Year Award. In 2004, he was named one of the top 100 Irish American businessmen by Irish America magazine. He also serves on the North American Advisory Board for the Prime Minister of Ireland.

Mr. McDonnell holds a B.S. degree in Electrical Engineering from Manhattan College, a M.S.E.E. degree from Rensselaer Polytechnic Institute and an honorary Doctorate of Humane Letters from Marymount University.

About DealerTrack

DealerTrack is a leading provider of on-demand software and data solutions for the automotive retail industry in the United States. We utilize the Internet to link automotive dealers with banks, finance companies, credit unions and other financing sources, and other service and information providers such as the major credit reporting agencies. We have established a network of active relationships with over 20,000 automotive dealers, including over 80% of all franchised dealers; over 140 financing sources, including the 20 largest independent financing sources in the United States and eight captive financing sources; and a number of other service and information providers to the automotive retail industry. Our credit application processing product enables dealers to automate and accelerate the indirect automotive financing process by increasing the speed of communications between these dealers and their financing sources. Our integrated subscription-based software products and services enable our automotive dealer customers to receive valuable consumer leads, compare various financing and leasing options and programs, sell insurance and other aftermarket products, document compliance with certain laws and execute financing contracts electronically.