NEWS RELEASE

FOR RELEASE: IMMEDIATE

GATX CORPORATION REPORTS 2011 FIRST QUARTER RESULTS

     CHICAGO, April 21 - GATX Corporation (NYSE:GMT) today reported 2011 first quarter net income of $19.9 million or $.42 per diluted share, compared to net income of $18.7 million or $.40 per diluted share in the first quarter of 2010. The 2011 first quarter results include positive after-tax fair-value adjustments of $6.4 million or $.14 per diluted share related to certain interest rate swaps at GATX’s European rail affiliate, AAE Cargo (“AAE”), and the 2010 first quarter results include negative after-tax fair-value adjustments of $0.8 million or $.02 per diluted share related to the AAE interest rate swaps.

     Brian A. Kenney, president and chief executive officer of GATX, stated, “As we expected entering 2011, rail market conditions continue to improve. In North America, fleet utilization increased to 97.8%, compared to 97.4% in the prior quarter. As the number of idle railcars in the industry continues to decline, our commercial team is focused on improving lease rates. These efforts are reflected in GATX’s Lease Price Index (“LPI”), which improved to negative 0.5% during the quarter. In March, we also ordered 12,500 new railcars that will deliver over a five-year period. Coupled with the sizable existing railcar investments made in the last two years, this order enables us to serve our customers with attractively priced, high quality railcars.

     “In Specialty, certain of our marine joint ventures continue to experience challenging market conditions, while our aircraft engine leasing joint venture with Rolls-Royce is performing well. American Steamship Company (“ASC”) started its sailing season in recent weeks and based on early demand indications, we continue to expect similar operating results in 2011 as in 2010.”

     Mr. Kenney concluded, “Overall, the first quarter operating environment and financial results were consistent with our expectations. Therefore, our 2011 full-year earnings estimate remains unchanged at $1.70 — $1.80 per diluted share, excluding the impact of the AAE interest rate swaps as noted above.”

RAIL

     Rail segment profit was $51.6 million in the first quarter of 2011, compared to $49.3 million in the first quarter of 2010. The first quarter 2011 and 2010 results include positive pre-tax adjustments of $7.2 million and negative pre-tax adjustments of $0.9 million, respectively, related to the change in fair-value of interest rate swaps at AAE.

     At March 31, 2011, Rail’s wholly-owned North American fleet totaled approximately 110,000 cars, and fleet utilization was 97.8% compared to 97.4% at year end and 96.0% at March 31,

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2010. The market is showing signs of tightening as carloadings continue to improve and idle railcar capacity in the industry continues to decline significantly. GATX’s LPI was negative 0.5% in the first quarter, compared to negative 14.0% in the fourth quarter of 2010 and negative 15.2% in the prior year period. The average lease renewal term for cars in the LPI was 41 months compared to 36 months in the 2010 fourth quarter and 31 months in the prior year period.

     The European wholly-owned tank car fleet totaled approximately 21,000 cars and utilization was 95.8% compared to 95.7% at year end and 94.4% at March 31, 2010.

     Additional current and historical fleet and operating data as well as macroeconomic data related to Rail’s business can be found on the last page of this press release.

SPECIALTY

     Specialty reported segment profit of $10.7 million in the first quarter of 2011 compared to $12.1 million in the prior year period. The decline was due to modestly lower asset remarketing income.

     The Specialty portfolio currently consists of approximately $763.6 million of owned assets (including on and off balance sheet assets) and third-party managed portfolios totaling approximately $226.7 million.

AMERICAN STEAMSHIP COMPANY

     American Steamship Company reported segment profit of $0.8 million in the first quarter of 2011 compared to $0.4 million in the first quarter 2010. ASC’s vessels are in winter lay up from January through late March and therefore first quarter operational activity is very limited.

COMPANY DESCRIPTION

     GATX Corporation (NYSE:GMT) provides leasing and related services to customers operating rail, marine and other targeted assets. GATX is a leader in leasing transportation assets and controls one of the largest railcar fleets in the world. Applying over a century of operating experience and strong market and asset expertise, GATX provides quality assets and services to customers worldwide. GATX has been headquartered in Chicago, Illinois since its founding in 1898 and has traded on the New York Stock Exchange since 1916. For more information, visit the Company’s website at www.gatx.com.

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TELECONFERENCE INFORMATION

GATX Corporation will host a teleconference to discuss 2011 first quarter results. Teleconference details are as follows:

Thursday, April 21 11:00 A.M. Eastern Time
Domestic Dial-In:		1-888-282-4591
International Dial-In:		1-719-325-2170
Replay: 1- 888-203-1112 / Access Code: 9625671

Call-in details, a copy of this press release and real-time audio access are available at www.gatx.com. Please access the call 15 minutes prior to the start time. Following the call, a replay will be available on the same site.

FORWARD-LOOKING STATEMENTS

This document contains statements that may constitute forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934 and are subject to the safe harbor provisions of those sections and the Private Securities Litigation Reform Act of 1995. Some of these statements may be identified by words such as “anticipate,” “believe,” “estimate,” “expect,” “intend,” “predict,” “project” or other words and terms of similar meaning. Investors are cautioned that any such forward-looking statements are not guarantees of future performance and involve risks and uncertainties, including those described in GATX’s Annual Report on Form 10-K for the year ended December 31, 2010 and other filings with the SEC, and that actual results or developments may differ materially from those in the forward-looking statements. Specific factors that might cause actual results to differ from expectations include, but are not limited to, general economic, market, regulatory and political conditions in the rail, marine, industrial and other industries served by GATX and its customers; lease rates, utilization levels and operating costs in GATX’s primary operating segments; conditions in the capital markets; changes in GATX’s credit ratings and financing costs; regulatory rulings that may impact the economic value and operating costs of assets; costs associated with maintenance initiatives; competitive factors in GATX’s primary markets including lease pricing and asset availability; operational and financial risks associated with long-term railcar purchase commitments; changes in loss provision levels within GATX’s portfolio; impaired asset charges that may result from changing market conditions or portfolio management decisions implemented by GATX; the opportunity for remarketing income; and the outcome of pending or threatened litigation. Given these risks and uncertainties, readers are cautioned not to place undue reliance on these forward-looking statements, which reflect management’s analysis, judgment, belief or expectation only as of the date hereof. GATX has based these forward-looking statements on information currently available and disclaims any intention or obligation to update or revise these forward-looking statements to reflect subsequent events or circumstances.

FOR FURTHER INFORMATION CONTACT:

Jennifer Van Aken
Director, Investor Relations
GATX Corporation
312-621-6689
jennifer.vanaken@gatx.com

Investor, corporate, financial, historical financial, photographic and news release information may be found at www.gatx.com.

(04/21/11)

—Tabular Follows—

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GATX CORPORATION AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)
(In Millions, Except Per Share Data)

		Three Months Ended
		March 31
		2011				2010
Gross Income
Lease income		$	224.8			$	221.2
Marine operating revenue			11.1				8.3
Asset remarketing income			8.9				14.4
Other income			20.2				19.7
Revenues			265.0				263.6
Share of affiliates’ earnings			17.1				18.3
Total Gross Income			282.1				281.9
Ownership Costs
Depreciation			52.3				51.7
Interest expense, net			42.9				42.6
Operating lease expense			34.6				34.6
Total Ownership Costs			129.8				128.9
Other Costs and Expenses
Maintenance expense			69.3				67.8
Marine operating expense			8.9				6.4
Selling, general and administrative			36.4				33.5
Other			11.9				19.0
Total Other Costs and Expenses			126.5				126.7
Income before Income Taxes			25.8				26.3
Income Taxes			5.9				7.6
Net Income		$	19.9			$	18.7

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GATX CORPORATION AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)
(In Millions, Except Per Share Data)
(Continued)

		Three Months Ended
		March 31
		2011				2010
Per Share Data
Basic		$	0.43			$	0.41
Average number of common shares (in millions)			46.3				46.0
Diluted		$	0.42			$	0.40
Average number of common shares and common share equivalents (in millions)			47.0				47.5
Dividends declared per common share		$	0.29			$	0.28

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GATX CORPORATION AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS (UNAUDITED)
(In Millions)

		March 31				December 31
		2011				2010
Assets
Cash and Cash Equivalents		$	53.9			$	78.5
Restricted Cash			54.7				56.6
Receivables
Rent and other receivables			63.6				71.1
Finance leases			333.8				347.7
Less: allowance for possible losses			(11.6	)			(11.6	)
			385.8				407.2
Operating Assets and Facilities
Rail			5,593.4				5,513.6
Specialty			288.8				280.8
ASC			394.2				389.1
Less: allowance for depreciation			(2,086.7	)			(2,049.7	)
			4,189.7				4,133.8
Investments in Affiliated Companies			524.6				486.1
Goodwill			96.7				92.7
Other Assets			193.3				187.5
Total Assets		$	5,498.7			$	5,442.4
Liabilities and Shareholders’ Equity
Accounts Payable and Accrued Expenses		$	126.4			$	114.6
Debt
Commercial paper and borrowings under bank credit facilities			175.8				115.6
Recourse			2,810.6				2,801.8
Nonrecourse			193.1				217.2
Capital lease obligations			40.6				41.9
			3,220.1				3,176.5
Deferred Income Taxes			759.0				750.6
Other Liabilities			239.5				287.0
Total Liabilities			4,345.0				4,328.7
Total Shareholders’ Equity			1,153.7				1,113.7
Total Liabilities and Shareholders’ Equity		$	5,498.7			$	5,442.4

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GATX CORPORATION AND SUBSIDIARIES
SEGMENT DATA (UNAUDITED)
Three Months Ended March 31, 2011
(In Millions)

																		GATX
		Rail				Specialty				ASC				Other				Consolidated
Gross Income
Lease income		$	209.4			$	14.4			$	1.0			$	—			$	224.8
Marine operating revenue			—				—				11.1				—				11.1
Asset remarketing income			7.6				1.3				—				—				8.9
Other income			19.8				0.2				—				0.2				20.2
Revenues			236.8				15.9				12.1				0.2				265.0
Share of affiliates’ earnings			7.1				10.0				—				—				17.1
Total Gross Income			243.9				25.9				12.1				0.2				282.1
Ownership Costs
Depreciation			47.9				4.4				—				—				52.3
Interest expense, net			32.7				7.1				2.0				1.1				42.9
Operating lease expense			34.4				0.3				—				(0.1	)			34.6
Total Ownership Costs			115.0				11.8				2.0				1.0				129.8
Other Costs and Expenses
Maintenance expense			68.9				—				0.4				—				69.3
Marine operating expense			—				—				8.9				—				8.9
Other			8.4				3.4				—				0.1				11.9
Total Other Costs and Expenses			77.3				3.4				9.3				0.1				90.1
Segment Profit (Loss)		$	51.6			$	10.7			$	0.8			$	(0.9	)			62.2
Selling, general and administrative																			36.4
Income before Income Taxes																			25.8
Income Taxes																			5.9
Net Income																		$	19.9
Selected Data:
Investment Volume		$	53.9			$	36.4			$	5.2			$	0.7			$	96.2
Asset Remarketing Income:
Disposition gains on owned assets			7.6				0.2				—				—				7.8
Residual sharing income			—				1.1				—				—				1.1
Total Asset Remarketing Income		$	7.6			$	1.3			$	—			$	—			$	8.9
Scrapping Gains (a)		$	6.6				—				—				—			$	6.6

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GATX CORPORATION AND SUBSIDIARIES
SEGMENT DATA (UNAUDITED)
Three Months Ended March 31, 2010
(In Millions)

																		GATX
		Rail				Specialty				ASC				Other				Consolidated
Gross Income
Lease income		$	204.9			$	15.3			$	1.0			$	—			$	221.2
Marine operating revenue			—				—				8.3				—				8.3
Asset remarketing income			12.5				1.9				—				—				14.4
Other income			19.3				0.2				—				0.2				19.7
Revenues			236.7				17.4				9.3				0.2				263.6
Share of affiliates’ earnings			8.6				9.7				—				—				18.3
Total Gross Income			245.3				27.1				9.3				0.2				281.9
Ownership Costs
Depreciation			47.6				4.1				—				—				51.7
Interest expense, net			31.7				6.8				2.1				2.0				42.6
Operating lease expense			34.4				0.3				—				(0.1	)			34.6
Total Ownership Costs			113.7				11.2				2.1				1.9				128.9
Other Costs and Expenses
Maintenance expense			67.4				—				0.4				—				67.8
Marine operating expense			—				—				6.4				—				6.4
Other			14.9				3.8				—				0.3				19.0
Total Other Costs and Expenses			82.3				3.8				6.8				0.3				93.2
Segment Profit (Loss)		$	49.3			$	12.1			$	0.4			$	(2.0	)			59.8
Selling, general and administrative																			33.5
Income before Income Taxes																			26.3
Income Taxes																			7.6
Net Income																		$	18.7
Selected Data:
Investment Volume		$	48.1			$	19.6			$	1.6			$	0.9			$	70.2
Asset Remarketing Income:
Disposition gains on owned assets			12.5				0.5				—				—				13.0
Residual sharing income			—				1.4				—				—				1.4
Total Asset Remarketing Income		$	12.5			$	1.9			$	—			$	—			$	14.4
Scrapping Gains (a)		$	4.1				—				—				—			$	4.1

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GATX CORPORATION AND SUBSIDIARIES
SUPPLEMENTAL INFORMATION (UNAUDITED)
(In Millions, Except Leverage)

		3/31/2010				6/30/2010				9/30/2010				12/31/2010				3/31/2011
Assets by Segment (includes off-balance sheet assets)
Rail		$	4,998.1			$	4,899.7			$	4,978.0			$	5,189.9			$	5,185.8
Specialty			693.8				691.5				713.8				728.1				755.5
ASC			260.3				285.5				274.3				271.1				269.1
Other			90.3				89.5				94.7				89.7				82.7
Total Assets, Excluding Cash		$	6,042.5			$	5,966.2			$	6,060.8			$	6,278.8			$	6,293.1
Non-performing Investments		$	17.8			$	17.4			$	17.1			$	16.7			$	16.5
Capital Structure
Commercial Paper and Bank Credit Facilities, Net of Unrestricted Cash		$	(132.4	)		$	72.0			$	48.4			$	37.1			$	121.9
On Balance Sheet Recourse Debt			2,764.1				2,515.3				2,534.6				2,801.8				2,810.6
On Balance Sheet Nonrecourse Debt			226.9				225.2				222.7				217.2				193.1
Off Balance Sheet Recourse Debt			742.6				746.3				787.4				782.8				718.3
Off Balance Sheet Nonrecourse Debt			200.3				197.8				195.5				188.7				184.7
Capital Lease Obligations			53.4				52.0				50.3				41.9				40.6
Total Borrowings, Net of Unrestricted Cash		$	3,854.9			$	3,808.6			$	3,838.9			$	4,069.5			$	4,069.2
Total Recourse Debt (a)		$	3,427.7			$	3,385.6			$	3,420.7			$	3,663.6			$	3,691.4
Shareholders’ Equity		$	1,096.2			$	1,044.9			$	1,098.6			$	1,113.7			$	1,153.7
Recourse Leverage			3.1				3.2				3.1				3.3				3.2

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GATX CORPORATION AND SUBSIDIARIES
SUPPLEMENTAL INFORMATION (UNAUDITED)
(Continued)

		3/31/2010				6/30/2010				9/30/2010				12/31/2010				3/31/2011
North American Rail Statistics (wholly-owned fleet)
Lease Price Index (LPI) (a)
Average Renewal Lease Rate Change			-15.2	%			-18.6	%			-15.7	%			-14.0	%			-0.5	%
Average Renewal Term (months)			31				36				36				36				41
Fleet Rollforward
Beginning Balance			110,870				108,918				108,626				108,800				111,389
Cars Added			346				434				1,189				3,479				175
Cars Scrapped			(1,026	)			(726	)			(917	)			(870	)			(963	)
Cars Sold			(1,272	)			—				(98	)			(20	)			(821	)
Ending Balance			108,918				108,626				108,800				111,389				109,780
Utilization			96.0	%			96.5	%			96.8	%			97.4	%			97.8	%
GATX Rail Europe Statistics (wholly-owned fleet)
Fleet Rollforward
Beginning Balance			20,033				20,321				20,302				20,226				20,432
Cars Added			288				15				61				298				109
Cars Scrapped/Sold			—				(34	)			(137	)			(92	)			(17	)
Ending Balance			20,321				20,302				20,226				20,432				20,524
Utilization			94.4	%			94.4	%			95.3	%			95.7	%			95.8	%
Rail Industry Statistics
Manufacturing Capacity Utilization Index (b)			72.8	%			74.2	%			75.3	%			76.8	%			77.4	%
Year-over-year Change in U.S. Carloadings (total, excl. intermodal) (c)			2.2	%			7.8	%			7.2	%			7.3	%			5.1	%
Year-over-year Change in U.S. Carloadings (chemical) (c)			13.5	%			12.8	%			10.2	%			9.6	%			7.0	%
Year-over-year Change in U.S. Carloadings (petroleum products) (c)			2.0	%			4.9	%			4.9	%			5.9	%			9.6	%
Production Backlog at Railcar Manufacturers (d)			12,990				14,930				19,267				22,658				n/a	(e)
American Steamship Company (ASC) Statistics
Total Net Tons Carried (millions)			1.3				8.3				9.9				8.5				1.2