News Releases

NEW YORK, December 15, 2006 – NYSE Regulation announced today that it determined that the common stock of Navistar International Corporation (the “Company”) – ticker symbol NAV – and the Company’s convertible junior preference stock, series D – ticker symbol NAV PR D – should be suspended from trading on both the NYSE and NYSE Arca, prior to the opening on Wednesday, December 20, 2006, or such earlier date as the Company commences trading in another securities marketplace or if there is material adverse development.

The Company has advised NYSE Regulation that it anticipates its securities will be quoted on the Pink Sheets Electronic Quotation Service following the suspension.

The decision was reached because the Company is a late filer and was under review by NYSE Regulation in light of the delay in filing with the Securities and Exchange Commission (“SEC”) its October 31, 2005 Form 10-K and certain of its fiscal 2006 Form 10-Q filings.  On December 15, 2006 , the Company announced that completion of its 2005 financial statements will extend beyond February 1, 2007 .  This date is beyond the maximum 12-month period otherwise available to complete the filing as permitted under the NYSE’s rules.

The Company has a right to a review of this determination by either exchange by a Committee of the Board of Directors of the NYSE or NYSE Arca, as the case may be. Application to the SEC to delist the issue is pending the completion of applicable procedures, including any appeal by the Company of the NYSE Regulation staff’s decision.   The NYSE or NYSE Arca may, at any time, suspend a security if either of them believes that continued dealings in or listing of the security on the NYSE or NYSE Arca, as the case may be, are not advisable.

Company contact:

Heather Kos

630-753-2406