U.S. Auto Parts Network, Inc. Ranked 13th in Deloitte's 2007 Technology Fast 50 Program for Los Angeles

Company Revenues Increased 569 Percent in the Past Five Years

CARSON, Calif., Oct. 4 /PRNewswire-FirstCall/ -- U.S. Auto Parts Network, Inc. (Nasdaq: PRTS), a leading online provider of aftermarket auto parts and accessories, today announced that it has been ranked 13th in Deloitte's prestigious Technology Fast 50 Program for Los Angeles. U.S. Auto Parts' strong growth over the past five years has placed it among the fastest growing companies in the 5-county greater Los Angeles region in the technology, media, telecommunications and life science sectors by Deloitte & Touche USA LLP, one of the nation's leading professional services organizations. Rankings are based on the percentage of revenue growth from 2002-2006.

"We are honored to be named one of the top 50 technology companies in Los Angeles," said Mehran Nia, President and Chief Executive Officer of U.S. Auto Parts. "This exciting achievement would not be possible without the hard work and dedication of our 735 employees around the world."

"We have experienced tremendous growth over the past several years by expanding our product offerings, increasing our customer base and improving the customer experience," Nia continued. "We have accomplished strong organic growth, as well as growth through the acquisition."

U.S. Auto Parts has experienced robust revenue growth over the past several years with net sales increasing from $17.9 million in 2002 to $120.1 million in fiscal 2006. In the past year, revenues improved 101% from $59.7 million in fiscal 2005.

"Deloitte's Los Angeles Technology Fast 50 companies have shown the strength, vision and tenacity to succeed in today's very competitive technology environment," said Tony Buzzelli, Vice Chairman and Regional Managing Partner, Pacific Southwest Region, Deloitte & Touche LLP. "We applaud the successes of U.S. Auto Parts Network and acknowledge it as one of the very few to accomplish such a fast growth rate over the past five years."

The Los Angeles Technology Fast 50 annually recognizes the fastest-growing companies within the geographic boundaries of Los Angeles, Riverside, Santa Barbara, San Bernardino and Ventura counties. To qualify for the Technology Fast 50, companies must have had operating revenues of at least $50,000 in 2002 and $5,000,000 in 2006, be headquartered in North America, and be a company that owns proprietary technology or proprietary intellectual property that contributes to a significant portion of the company's operating revenues; or devotes a significant proportion of revenues to the research and development of technology.

Companies from the 16 regional Technology Fast 50 programs in the United States and Canada are automatically entered in Deloitte's Technology Fast 500 program, which ranks North America's top 500 fastest growing technology, media, telecommunications and life sciences companies. For more information on Deloitte's Technology Fast 50 or Technology Fast 500 programs, visit http://www.fast500.com.

About Deloitte

Deloitte refers to one or more of Deloitte Touche Tohmatsu, a Swiss Verein, its member firms and their respective subsidiaries and affiliates. As a Swiss Verein (association), neither Deloitte Touche Tohmatsu nor any of its member firms has any liability for each other's acts or omissions. Each of the member firms is a separate and independent legal entity operating under the names "Deloitte", "Deloitte & Touche", "Deloitte Touche Tohmatsu" or other related names. Services are provided by the member firms or their subsidiaries or affiliates and not by the Deloitte Touche Tohmatsu Verein.

Deloitte & Touche USA LLP is the US member firm of Deloitte Touche Tohmatsu. In the US, services are provided by the subsidiaries of Deloitte & Touche USA LLP (Deloitte & Touche LLP, Deloitte Consulting LLP, Deloitte Financial Advisory Services LLP, Deloitte Tax LLP and their subsidiaries), and not by Deloitte & Touche USA LLP.

About U.S. Auto Parts Network, Inc.

Established in 1995, U.S. Auto Parts is a leading online provider of aftermarket auto parts, including body parts, engine parts, performance parts and accessories. Through the Company's network of websites, U.S. Auto Parts provides individual consumers with a broad selection of competitively priced products that are mapped by a proprietary product database to product applications based on vehicle makes, models and years. U.S. Auto Parts' flagship websites are located at http://www.partstrain.com and http://www.autopartswarehouse.com and the Company's corporate website is located at http://www.usautoparts.net.

U.S. Auto Parts is headquartered in Carson, California.

Safe Harbor Statement under the Private Securities Litigation Reform Act of 1995:

All statements included or incorporated by reference in this release, other than statements or characterizations of historical fact, are forward-looking statements. These forward-looking statements are based on our current expectations, estimates and projections about our industry and business, management's beliefs, and certain assumptions made by us, all of which are subject to change. Forward-looking statements can often be identified by words such as "anticipates," "expects," "intends," "plans," "predicts," "believes," "seeks," "estimates," "may," "will," "should," "would," "could," "potential," "continue," "ongoing," similar expressions, and variations or negatives of these words. These statements include, but are not limited to, the Company's expectations regarding the Company's long-term prospects, future financial operating results and potential growth. These forward-looking statements are not guarantees of future results and are subject to risks, uncertainties and assumptions that could cause our actual results to differ materially and adversely from those expressed in any forward-looking statement.

Important factors that may cause such a difference, include, but are not limited to, the Company's demand for and pricing of the Company's products; the competitive environment in the Company's industry; the Company's ability to expand its product offerings and make changes to its product mix; the volume of product sales; the gain or loss of customers; the Company's ability to retain, recruit and hire key executives, technical personnel and other employees in the positions and numbers, with the experience and capabilities, and at the compensation levels needed to implement the business and product plans; and the Company's ability to timely and accurately identify opportunities in new markets, and manage integration issues and costs inherent in acquisitions..

Our Annual Report on Form 10-K, subsequent Quarterly Report on Form 10-Q, recent Current Reports on Form 8-K, and other Securities and Exchange Commission filings discuss the foregoing risks as well as other important risk factors that could contribute to such differences or otherwise affect our business, results of operations and financial condition. The forward-looking statements in this release speak only as of this date. Unless otherwise required by law, the Company expressly disclaims any obligation to revise or update publicly any forward-looking statement for any reason, whether as result of new information, future events or otherwise.

    Investor Contacts:
    Michael McClane, Chief Financial Officer
    U.S. Auto Parts Network, Inc.
    michael@usautoparts.com
    (310) 735-0085

    Anne Rakunas / Laura Foster
    ICR, Inc.
    (310) 954-1100
    anne.rakunas@icrinc.com
    laura.foster@icrinc.com

    Media Contacts:
    Stephanie Sampiere / Matt Lindberg
    ICR, Inc.
    (203) 682-8200
    stephanie.sampiere@icrinc.com
    matthew.lindberg@icrinc.com

SOURCE U.S. Auto Parts Network, Inc.

Released October 4, 2007