CarMax (KMX) 10-Q 2017 Q1 Quarterly report

EXHIBIT 32.1

CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER

PURSUANT TO 18 U.S.C. SECTION 1350

In connection with the CarMax, Inc. (the "company") Quarterly Report on Form 10-Q for the period ended May 31, 2016, as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, Thomas J. Folliard, Chief Executive Officer of the company, certify pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to my knowledge:

1.  The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

2.  The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the company as of, and for, the periods presented in the Report.

Date:	July 7, 2016	By:	/s/ Thomas J. Folliard
			Thomas J. Folliard
			Chief Executive Officer