EXHIBIT 99.1

Additional Financial Information (Unaudited)

The following additional financial information is provided based upon the continuing interest of certain stockholders and creditors to assist them in understanding our core manufacturing business with our financial services operations on a pre-tax equity basis. Our manufacturing operations, for this purpose, include our Truck segment, Engine segment, Parts segment, and Corporate items which includes certain eliminations. The manufacturing operations financial information represents non-GAAP financial measures. The reconciling differences between these non-GAAP financial measures and our GAAP condensed consolidated financial statements in Item 1, Condensed Consolidated Financial Statements, are our financial services operations and adjustments required to eliminate certain intercompany transactions between Manufacturing Operations and Financial Services Operations and to adjust for reclasses. Certain of our subsidiaries in our manufacturing operations have debt outstanding with our financial services operations (“intercompany debt”). In the condensed statements of assets, liabilities, redeemable equity securities, and stockholders’ deficit, the intercompany debt is reflected as accounts payable. The change in the intercompany debt is reflected in the net cash provided by operating activities in the condensed statements of cash activities.

Condensed Statements of Revenues and Expenses

Navistar International Corporation (Manufacturing operations with financial services operations on a pre-tax equity basis)

	Three Months Ended July 31, 2010
	Manufacturing Operations			Financial Services Operations			Adjustments			Consolidated Statement of Operations
(in millions)
Sales of manufactured products	$	3,162		$	—		$	—		$	3,162
Finance revenues		—			82			(23	)		59
Sales and revenues, net		3,162			82			(23	)		3,221
Costs of products sold		2,525			—			—			2,525
Restructuring charges		(10	)		1			—			(9	)
Selling, general and administrative expenses		331			31			(2	)		360
Engineering and product development costs		113			—			—			113
Interest expense		40			24			(6	)		58
Other expense (income), net		15			(7	)		(15	)		(7	)
Total costs and expenses		3,014			49			(23	)		3,040
Equity in loss of non-consolidated affiliates		(13	)		—			—			(13	)
Income before income taxes and equity income from financial services operations		135			33			—			168
Equity income from financial services operations		33			—			(33	)		—
Income before income taxes		168			33			(33	)		168
Income tax expense		(19	)		—			—			(19	)
Net income (loss)		149			33			(33	)		149
Less: Income attributable to non-controlling interests		12			—			—			12
Net income (loss) attributable to Navistar International Corporation	$	137		$	33		$	(33	)	$	137

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Condensed Statements of Revenues and Expenses

Navistar International Corporation (Manufacturing operations with financial services operations on a pre-tax equity basis)

	Nine Months Ended July 31, 2010
	Manufacturing Operations			Financial Services Operations			Adjustments			Consolidated Statement of Operations
(in millions)
Sales of manufactured products	$	8,610		$	—		$	—		$	8,610
Finance revenues		—			233			(70	)		163
Sales and revenues, net		8,610			233			(70	)		8,773
Costs of products sold		6,976			—			—			6,976
Restructuring charges		(27	)		4			—			(23	)
Selling, general and administrative expenses		975			100			(5	)		1,070
Engineering and product development costs		338			—			—			338
Interest expense		116			85			(12	)		189
Other expense (income), net		22			(17	)		(53	)		(48	)
Total costs and expenses		8,400			172			(70	)		8,502
Equity in loss of non-consolidated affiliates		(32	)		—			—			(32	)
Income before income taxes and equity income from financial services operations		178			61			—			239
Equity income from financial services operations		61			—			(61	)		—
Income before income taxes		239			61			(61	)		239
Income tax expense		(17	)		—			—			(17	)
Net income (loss)		222			61			(61	)		222
Less: Income attributable to non-controlling interests		38			—			—			38
Net income (loss) attributable to Navistar International Corporation	$	184		$	61		$	(61	)	$	184

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Condensed Statements of Revenues and Expenses

Navistar International Corporation (Manufacturing operations with financial services operations on a pre-tax equity basis)

	Three Months Ended July 31, 2009
	Manufacturing Operations			Financial Services Operations		Adjustments			Consolidated Statement of Operations
(in millions)
Sales of manufactured products	$	2,433		$	—	$	—		$	2,433
Finance revenues		—			92		(19	)		73
Sales and revenues, net		2,433			92		(19	)		2,506
Costs of products sold		2,119			—		—			2,119
Restructuring charges		—			—		—			—
Selling, general and administrative expenses		275			34		—			309
Engineering and product development costs		101			—		—			101
Interest expense		23			33		—			56
Other expense (income), net		(42	)		5		(19	)		(56	)
Total costs and expenses		2,476			72		(19	)		2,529
Equity in loss of non-consolidated affiliates		25			—		—			25
Income before income taxes, extraordinary gain and equity income from financial services operations		(18	)		20		—			2
Equity income from financial services operations		20			—		(20	)		—
Income before income taxes and extraordinary gain		2			20		(20	)		2
Income tax benefit (expense)		(30	)		—		—			(30	)
Income (loss) before extraordinary gain		(28	)		20		(20	)		(28	)
Extraordinary gain, net of tax		23			—		—			23
Net income (loss)		(5	)		20		(20	)		(5	)
Less: Income (loss) attributable to non-controlling interests		7			—		—			7
Net income (loss) attributable to Navistar International Corporation	$	(12	)	$	20	$	(20	)	$	(12	)

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Condensed Statements of Revenues and Expenses

Navistar International Corporation (Manufacturing operations with financial services operations on a pre-tax equity basis)

	Nine Months Ended July 31, 2009
	Manufacturing Operations			Financial Services Operations		Adjustments			Consolidated Statement of Operations
(in millions)
Sales of manufactured products	$	8,069		$	—	$	—		$	8,069
Finance revenues		—			273		(58	)		215
Sales and revenues, net		8,069			273		(58	)		8,284
Costs of products sold		6,737			—		—			6,737
Restructuring charges		55			—		—			55
Selling, general and administrative expenses		886			99		—			985
Engineering and product development costs		339			—		—			339
Interest expense		77			135		(6	)		206
Other expense (income), net		(182	)		2		(52	)		(232	)
Total costs and expenses		7,912			236		(58	)		8,090
Equity in loss of non-consolidated affiliates		56			—		—			56
Income before income taxes, extraordinary gain and equity income from financial services operations		213			37		—			250
Equity income from financial services operations		37			—		(37	)		—
Income before income taxes and extraordinary gain		250			37		(37	)		250
Income tax benefit (expense)		(32	)		—		—			(32	)
Income (loss) before extraordinary gain		218			37		(37	)		218
Extraordinary gain, net of tax		23			—		—			23
Net income (loss)		241			37		(37	)		241
Less: Income attributable to non-controlling interests		7			—		—			7
Net income (loss) attributable to Navistar International Corporation	$	234		$	37	$	(37	)	$	234

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Condensed Statements of Assets, Liabilities, Redeemable Equity Securities, and Stockholders’ Deficit

Navistar International Corporation (Manufacturing operations with financial services operations on a pre-tax equity basis)

	As of July 31, 2010
	Manufacturing Operations			Financial Services Operations		Adjustments			Consolidated Balance Sheet
(in millions)
Cash and cash equivalents	$	476		$	39	$	—		$	515
Marketable securities		281			20		—			301
Restricted cash and cash equivalents		27			327		—			354
Accounts receivables		1,036			3,089		(158	)		3,967
Inventories		1,622			15		—			1,637
Investments in financial services operations		479			—		(479	)		—
Investments in non-consolidated affiliates		106			—		—			106
Property and equipment, net		1,334			119		—			1,453
Goodwill and intangible assets, net		583			—		—			583
Other assets		314			36		—			350
Deferred taxes, net		102			50		—			152
Total assets	$	6,360		$	3,695	$	(637	)	$	9,418
Accounts payable	$	1,641		$	39	$	—		$	1,680
Postretirement benefits liabilities		2,228			31		—			2,259
Debt		1,905			3,039		(158	)		4,786
Other liabilities		1,626			107		—			1,733
Redeemable equity securities		9			—		—			9
Stockholders’ equity attributable to non-controlling interest		56			—		—			56
Stockholders’ equity (deficit) attributable to controlling interest		(1,105	)		479		(479	)		(1,105	)
Total liabilities, redeemable equity securities, and stockholders’ equity (deficit)	$	6,360		$	3,695	$	(637	)	$	9,418

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Condensed Statements of Assets, Liabilities, Redeemable Equity Securities, and Stockholders’ Deficit

Navistar International Corporation (Manufacturing operations with financial services operations on a pre-tax equity basis)

	As of October 31, 2009
	Manufacturing Operations			Financial Services Operations		Adjustments			Consolidated Balance Sheet
	(Revised)(A)
(in millions)
Cash and cash equivalents	$	1,152		$	60	$	—		$	1,212
Restricted cash and cash equivalents		30			455		—			485
Accounts receivables		915			3,358		(188	)		4,085
Inventories		1,634			32		—			1,666
Investments in financial services operations		423			—		(423	)		—
Investments in non-consolidated affiliates		62			—		—			62
Property and equipment, net		1,345			122		—			1,467
Goodwill and intangible assets, net		582			—		—			582
Deferred taxes, net		102			57		—			159
Other assets		253			52		—			305
Total assets	$	6,498		$	4,136	$	(611	)	$	10,023
Accounts payable	$	1,929		$	131	$	(188	)	$	1,872
Postretirement benefits liabilities		2,635			33		—			2,668
Debt		1,861			3,431		—			5,292
Other liabilities		1,702			118		—			1,820
Redeemable equity securities		13			—		—			13
Stockholders’ equity attributable to non-controlling interests		61			—		—			61
Stockholders’ equity (deficit) attributable to Navistar International Corporation		(1,703	)		423		(423	)		(1,703	)
Total liabilities, redeemable equity securities, and stockholders’ equity (deficit)	$	6,498		$	4,136	$	(611	)	$	10,023

(A) Revised; See Note 1, Summary of significant accounting policies, to the accompanying consolidated financial statements.

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Condensed Statement of Cash Activities

Navistar International Corporation (Manufacturing operations with financial services operations on a pre-tax equity basis)

	Nine Months Ended July 31, 2010
	Manufacturing Operations			Financial Services Operations			Adjustments			Condensed Consolidated Statement of Cash Flows
(in millions)
Cash flows from operating activities
Net income	$	222		$	61		$	(61	)	$	222
Adjustments to reconcile net loss to cash provided by (used in) operating activities:
Depreciation and amortization		194			4			—			198
Depreciation of equipment leased to others		21			17			—			38
Amortization of debt issuance costs and discount		19			10			—			29
Deferred income taxes		3			6			—			9
Equity in loss of non-consolidated affiliates		32			—			—			32
Equity in income of financial services affiliates		(61	)		—			61			—
Dividends from non-consolidated affiliates		3			—			—			3
Change in intercompany receivable /payable, net		32			(32	)		—			—
Other, net		(499	)		632			—			133
Net cash provided by (used in) operating activities		(34	)		698			—			664
Cash flows from investing activities
Purchases of marketable securities		(924	)		(20	)		—			(944	)
Sales or maturities of marketable securities		643			—			—			643
Net change in restricted cash and cash equivalents		4			337			—			341
Capital expenditures		(161	)		(1	)		—			(162	)
Purchase of equipment leased to others		(1	)		(26	)		—			(27	)
Acquisition of intangibles		(12	)		—			—			(12	)
Business acquisitions		(2	)		—			—			(2	)
Other investing activities		(83	)		5			10			(68	)
Net cash provided by (used in) investing activities		(536	)		295			10			(231	)
Net cash used in financing activities		(102	)		(1,015	)		(10	)		(1,127	)
Effect of exchange rate changes on cash and cash equivalents		(4	)		1			—			(3	)
Decrease in cash and cash equivalents		(676	)		(21	)		—			(697	)
Cash and cash equivalents at beginning of the period		1,152			60			—			1,212
Cash and cash equivalents at end of the period	$	476		$	39		$	—		$	515

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Condensed Statement of Cash Activities

Navistar International Corporation (Manufacturing operations with financial services operations on a pre-tax equity basis)

	Nine Months Ended July 31, 2009
	Manufacturing Operations			Financial Services Operations			Adjustments			Condensed Consolidated Statement of Cash Flows
(in millions)
Cash flows from operating activities
Net income (loss)	$	241		$	37		$	(37	)	$	241
Adjustments to reconcile net income (loss) to cash provided by (used in) operating activities:
Depreciation and amortization		210			3			—			213
Depreciation of equipment leased to others		26			16			—			42
Amortization of debt issuance cost		5			7			—			12
Deferred income taxes		4			2			—			6
Equity in income of non-consolidated affiliates		(56	)		—			—			(56	)
Equity in income of financial services affiliates		(37	)		—			37			—
Dividends from non-consolidated affiliates		59			—			—			59
Restructuring charges		—			—			—			—
Change in intercompany receivable/payable, net		(97	)		97			—			—
Other, net		(218	)		608			—			390
Net cash provided by operating activities		137			770			—			907
Cash flows from investing activities
Purchases of marketable securities		(354	)		—			—			(354	)
Sales or maturities of marketable securities		356			—			—			356
Net change in restricted cash and cash equivalents		1			48			—			49
Capital expenditures		(118	)		(2	)		—			(120	)
Purchase of equipment leased to others		(1	)		(27	)		—			(28	)
Business acquisitions, net of escrow receipt		(42	)		—			—			(42	)
Other investment activities		(32	)		4			20			(8	)
Net cash provided by (used in) investing activities		(190	)		23			20			(147	)
Net cash used in financing activities		(59	)		(807	)		(20	)		(886	)
Effect of exchange rate changes on cash and cash equivalents		8			(2	)		—			6
Decrease in cash and cash equivalents		(104	)		(16	)		—			(120	)
Increase in cash and cash equivalents upon consolidation of BDP and BDT		80			—			—			80
Cash and cash equivalents at beginning of the period		775			86			—			861
Cash and cash equivalents at end of the period	$	751		$	70		$	—		$	821

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