Exhibit 99.1

MONTHLY SERVICER'S CERTIFICATE

CARMAX BUSINESS SERVICES, LLC

CARMAX AUTO OWNER TRUST

SERIES 2016-4

Collection Period

09/01/20-09/30/20

Determination Date

10/9/2020

Distribution Date

10/15/2020

Additional information, including defined terms, can be found in the prospectus on the SEC's EDGAR system (http://www.sec.gov) under File No. 333-207329-04.


Pool Balance
1.	Pool Balance on the close of the last day of the preceding Collection Period			$	167,882,457.69
2.	Collections allocable to Principal			$	12,762,353.74
3.	Purchase Amount allocable to Principal			$	0.00
4.	Defaulted Receivables			$	223,186.59
5.	Pool Balance on the close of the last day of the related Collection Period			$	154,896,917.36
	(Ln1 - Ln2 - Ln3 - Ln4)
6.	Total number of Receivables outstanding on the close of the last day of the related Collection Period			27,657
7.	Initial Pool Balance			$	1,300,000,031.51
		Beginning of Period		End of Period
8.	Note Balances
	a. Class A-1 Note Balance	$	0.00	$	0.00
	b. Class A-2 Note Balance	$	0.00	$	0.00
	c. Class A-3 Note Balance	$	0.00	$	0.00
	d. Class A-4 Note Balance	$	89,882,457.53	$	76,896,917.20
	e. Class B Note Balance	$	25,950,000.00	$	25,950,000.00
	f. Class C Note Balance	$	22,100,000.00	$	22,100,000.00
	g. Class D Note Balance	$	23,450,000.00	$	23,450,000.00
	h. Note Balance (sum a - g)	$	161,382,457.53	$	148,396,917.20
9.	Pool Factors
	a. Class A-1 Note Pool Factor	0.0000000		0.0000000
	b. Class A-2 Note Pool Factor	0.0000000		0.0000000
	c. Class A-3 Note Pool Factor	0.0000000		0.0000000
	d. Class A-4 Note Pool Factor	0.6887545		0.5892484
	e. Class B Note Pool Factor	1.0000000		1.0000000
	f. Class C Note Pool Factor	1.0000000		1.0000000
	g. Class D Note Pool Factor	1.0000000		1.0000000
	h. Note Pool Factor	0.1241404		0.1141515
10.	Overcollateralization Target Amount			$	6,500,000.16
11.	Current overcollateralization amount (Pool Balance - Note Balance)			$	6,500,000.16
12.	Weighted Average Coupon			8.01		%
13.	Weighted Average Original Term	months		69.14
14.	Weighted Average Remaining Term	months		19.12
Collections
15.	Finance Charges:
	a. Collections allocable to Finance Charge			$	1,174,289.09
	b. Liquidation Proceeds allocable to Finance Charge			$	6,090.14
	c. Purchase Amount allocable to Finance Charge			$	0.00
	d. Available Finance Charge Collections (sum a - c)			$	1,180,379.23
16.	Principal:
	a. Collections allocable to Principal			$	12,762,353.74
	b. Liquidation Proceeds allocable to Principal			$	340,631.51
	c. Purchase Amount allocable to Principal			$	0.00
	d. Available Principal Collections (sum a - c)			$	13,102,985.25


17.	Total Finance Charge and Principal Collections (15d + 16d)	$	14,283,364.48
18.	Interest Income from Collection Account	$	517.30
19.	Simple Interest Advances	$	0.00
20.	Available Collections (Ln17 + 18 + 19)	$	14,283,881.78
Available Funds
21.	Available Collections	$	14,283,881.78
22.	Reserve Account Draw Amount	$	0.00
23.	Available Funds	$	14,283,881.78
Application of Available Funds
24.	Servicing Fee
	a. Monthly Servicing Fee	$	139,902.05
	b. Amount Unpaid from Prior Months	$	0.00
	c. Amount Paid	$	139,902.05
	d. Shortfall Amount (a + b - c)	$	0.00
25.	Unreimbursed Servicer Advances	$	0.00
26.	Successor Servicer and Asset Representations Reviewer Unpaid Expenses and Indemnity Amounts
	a. Successor Servicer Unpaid Transition Expenses and Indemnity Amounts (Capped at $175,000 annually)	$	0.00
	b. Successor Servicer Amount Paid	$	0.00
	c. Successor Servicer Shortfall Amount (a - b)	$	0.00
	d. Asset Representations Reviewer Fees, Expenses and Indemnity Amounts (Capped at $175,000 annually)	$	0.00
	e. Asset Representations Reviewer Amount Paid	$	0.00
	f. Asset Representations Reviewer Shortfall Amount (d - e)	$	0.00
27.	Class A Noteholder Interest Amounts
	a. Class A-1 Monthly Interest	$	0.00
	b. Additional Note Interest related to Class A-1 Monthly Interest	$	0.00
	c. Interest Due on Additional Note Interest related to Class A-1 Monthly Interest	$	0.00
	d. Total Class A-1 Note Interest (sum a - c)	$	0.00
	e. Class A-2 Monthly Interest	$	0.00
	f. Additional Note Interest related to Class A-2 Monthly Interest	$	0.00
	g. Interest Due on Additional Note Interest related to Class A-2 Monthly Interest	$	0.00
	h. Total Class A-2 Note Interest (sum e - g)	$	0.00
	i. Class A-3 Monthly Interest	$	0.00
	j. Additional Note Interest related to Class A-3 Monthly Interest	$	0.00
	k. Interest Due on Additional Note Interest related to Class A-3 Monthly Interest	$	0.00
	l. Total Class A-3 Note Interest (sum i - k)	$	0.00
	m. Class A-4 Monthly Interest	$	119,843.28
	n. Additional Note Interest related to Class A-4 Monthly Interest	$	0.00
	o. Interest Due on Additional Note Interest related to Class A-4 Monthly Interest	$	0.00
	p. Total Class A-4 Note Interest (sum m - o)	$	119,843.28
28.	Priority Principal Distributable Amount	$	0.00
29.	Class B Noteholder Interest Amount
	a. Class B Monthly Interest	$	41,520.00
	b. Additional Note Interest related to Class B Monthly Interest	$	0.00
	c. Interest Due on Additional Note Interest related to Class B Monthly Interest	$	0.00
	d. Total Class B Note Interest (sum a - c)	$	41,520.00
30.	Secondary Principal Distributable Amount	$	0.00
31.	Class C Noteholder Interest Amount
	a. Class C Monthly Interest	$	41,621.67
	b. Additional Note Interest related to Class C Monthly Interest	$	0.00
	c. Interest Due on Additional Note Interest related to Class C Monthly Interest	$	0.00
	d. Total Class C Note Interest (sum a - c)	$	41,621.67
32.	Tertiary Principal Distributable Amount	$	0.00

33.

Class D Noteholder Interest Amount


	a. Class D Monthly Interest	$	56,866.25
	b. Additional Note Interest related to Class D Monthly Interest	$	0.00
	c. Interest Due on Additional Note Interest related to Class D Monthly Interest	$	0.00
	d. Total Class D Note Interest (sum a - c)	$	56,866.25
34.	Quaternary Principal Distributable Amount	$	6,485,540.17
35.	Required Payment Amount (Ln 24 + Ln 26 + (sum of Ln 27 through Ln 34))	$	6,885,293.42
36.	Reserve Account Deficiency	$	0.00
37.	Regular Principal Distributable Amount	$	6,500,000.16
38.	Remaining Unpaid Servicer Transition Expenses and Additional Servicing Fees, if any	$	0.00
39.	Remaining Unpaid Trustee and Asset Representations Reviewer Fees, Expenses and Indemnity Amounts, if any
	a. Remaining Unpaid Trustee Fees, Expenses and Indemnity Amounts	$	0.00
	b. Remaining Unpaid Asset Representations Reviewer Fees, Expenses and Indemnity Amounts	$	0.00
40.	Remaining Unpaid Successor Servicer Indemnity Amounts, if any	$	0.00
Collection Account Activity
41.	Deposits
	a. Total Daily Deposits of Finance Charge Collections	$	1,180,379.23
	b. Total Daily Deposits of Principal Collections	$	13,102,985.25
	c. Withdrawal from Reserve Account	$	0.00
	d. Interest Income	$	517.30
	e. Total Deposits to Collection Account (sum a - d)	$	14,283,881.78
42.	Withdrawals
	a. Servicing Fee and Unreimbursed Servicer Advances	$	139,902.05
	b. Successor Servicer Transition Expenses and Indemnity Amounts	$	0.00
	c. Deposit to Note Payment Account for Monthly Note Interest/Principal	$	13,245,391.53
	d. Deposit to Reserve Account	$	0.00
	e. Excess Collections (Deposit to Certificate Payment Account for payment to Certificateholder)	$	898,588.20
	f. Total Withdrawals from Collection Account (sum a - e)	$	14,283,881.78
Note Payment Account Activity
43.	Deposits
	a. Class A-1 Interest Distribution	$	0.00
	b. Class A-2 Interest Distribution	$	0.00
	c. Class A-3 Interest Distribution	$	0.00
	d. Class A-4 Interest Distribution	$	119,843.28
	e. Class B Interest Distribution	$	41,520.00
	f. Class C Interest Distribution	$	41,621.67
	g. Class D Interest Distribution	$	56,866.25
	h. Class A-1 Principal Distribution	$	0.00
	i. Class A-2 Principal Distribution	$	0.00
	j. Class A-3 Principal Distribution	$	0.00
	k. Class A-4 Principal Distribution	$	12,985,540.33
	l. Class B Principal Distribution	$	0.00
	m. Class C Principal Distribution	$	0.00
	n. Class D Principal Distribution	$	0.00
	o. Total Deposits to Note Payment Account (sum a - n)	$	13,245,391.53
44.	Withdrawals
	a. Class A-1 Distribution	$	0.00
	b. Class A-2 Distribution	$	0.00
	c. Class A-3 Distribution	$	0.00
	d. Class A-4 Distribution	$	13,105,383.61
	e. Class B Distribution	$	41,520.00


f. Class C Distribution	$	41,621.67
g. Class D Distribution	$	56,866.25
h. Total Withdrawals from Note Payment Account (sum a - g)	$	13,245,391.53


Certificate Payment Account Activity
45.	Deposits
	a. Excess Collections	$	898,588.20
	b. Reserve Account surplus (Ln 55)	$	133.20
	c. Total Deposits to Certificate Payment Account (sum a - b)	$	898,721.40
46.	Withdrawals
	a. Certificateholder Distribution	$	898,721.40
	b. Total Withdrawals from Certificate Payment Account	$	898,721.40
Required Reserve Account Amount
47.	Lesser of: (a or b)
	a. $3,250,000.08	$	3,250,000.08
	b. Note Balance	$	148,396,917.20
48.	Required Reserve Account Amount	$	3,250,000.08
Reserve Account Reconciliation
49.	Beginning Balance (as of end of preceding Distribution Date)	$	3,250,000.08
50.	Investment Earnings	$	133.20
51.	Reserve Account Draw Amount	$	0.00
52.	Reserve Account Amount (Ln 49 + Ln 50 - Ln 51)	$	3,250,133.28
53.	Deposit from Available Funds (Ln 42d)	$	0.00
54.	If Reserve Account Balance exceeds Required Reserve Account Amount, payment to
	a. the Note Payment Account for the payment of principal to the extent of any unfunded Regular Principal Distribution Amount; and	$	0.00
	b. any Successor Servicer for the payment of any unfunded Transition Costs and Additional Servicing Fee	$	0.00
55.	Payment to Certificateholder if Reserve Account Balance exceeds Required Reserve Account Amount and to the extent no unfunded amounts described in Ln 54 exist	$	133.20
56.	Ending Balance (Ln52 + Ln53 - Ln54 - Ln55)	$	3,250,000.08
57.	Reserve Account Deficiency (Ln48 - Ln56)	$	0.00
Instructions to the Trustee
58.	Amount to be deposited from the Reserve Account into the Collection Account	$	0.00
59.	Amount to be paid to Servicer from the Collection Account	$	139,902.05
60.	Amount to be deposited from the Collection Account into the Note Payment Account	$	13,245,391.53
61.	Amount to be deposited from the Collection Account into the Certificate Payment Account	$	898,588.20
62.	Amount to be deposited from the Collection Account into the Reserve Account	$	0.00
63.	Amount to be deposited from the Reserve Account, if Reserve Account Balance exceeds Required Reserve Account Amount, into
	a. the Note Payment Account for any unfunded Regular Principal Distributable Amount	$	0.00
	b. the Certificate Payment Account for payment to the Certificateholder, if no unfunded Regular Principal distributable amount exists	$	133.20
64.	Amount to be paid to Class A-1 Noteholders from the Note Payment Account	$	0.00
65.	Amount to be paid to Class A-2 Noteholders from the Note Payment Account	$	0.00
66.	Amount to be paid to Class A-3 Noteholders from the Note Payment Account	$	0.00
67.	Amount to be paid to Class A-4 Noteholders from the Note Payment Account	$	13,105,383.61
68.	Amount to be paid to Class B Noteholders from the Note Payment Account	$	41,520.00
69.	Amount to be paid to Class C Noteholders from the Note Payment Account	$	41,621.67
70.	Amount to be paid to Class D Noteholders from the Note Payment Account	$	56,866.25
71.	Amount to be paid to Certificateholders from the Certificate Payment Account with respect to Excess Collections and Reserve Account surplus	$	898,721.40


Delinquency Activity
		Number of Loans	Principal Balance
72.	Delinquency Analysis
	a. 31 to 60 days past due	582	$	5,042,913.58
	b. 61 to 90 days past due	239	$	2,165,399.20
	c. 91 to 120 days past due	55	$	419,024.34
	d. 121 or more days past due	1	$	281.14
	e. Total Past Due (sum a - d)	877	$	7,627,618.26
	f. Delinquent Loans as a percentage of end of period Pool Balance (Ln 72e / Ln 5)		4.9243		%

73.	Has a Delinquency Trigger Event occurred?		No

Loss Activity
		Number of Loans	Principal Balance

74.	Defaulted Receivables (charge-offs)	33	$	223,186.59
75.	Recoveries	614	$	346,721.65
76.	Net Losses (Ln 74 - Ln 75)		$	-123,535.06
77.	Ratio of Net Losses to Beginning of Period Pool Balance (Ln 76 / Ln 1)		-0.0736		%

Cumulative Loss Activity
		Number of Loans	Principal Balance

78.	Defaulted Receivables (charge-offs)	4,240	$	52,511,164.74
79.	Recoveries	3,546	$	23,502,700.96
80.	Cumulative Net Losses (Ln 78 - Ln 79)		$	29,008,463.78
81.	Ratio of Cumulative Net Losses to Initial Pool Balance (Ln 80 / Ln 7)		2.2314		%
82.	Average Net Loss on Defaulted Receivables		$	6,841.62

Other Servicing Information

83.	Principal Balance of Receivables extended during the Collection Period		$	1,253,415.84
84.	Pool Balance on the close of the last day of the preceding Collection Period		$	167,882,457.69
85.	Ratio of extensions to pool balance (Ln 83 / Ln 84)		0.75		%

Servicer Covenant
86.	CarMax, Inc Consolidated Tangible Net Worth as of the end of the Related Fiscal Quarter		$	3,553,998,000.00
87.	Is CarMax, Inc Consolidated Tangible Net Worth greater than $1,000,000,000?		Yes

IN WITNESS WHEREOF, the undersigned has duly executed this certificate on October 9, 2020.


CARMAX BUSINESS SERVICES, LLC

As Servicer

By:			/s/ Andrew J. McMonigle

Name:			Andrew J. McMonigle

Title:			Vice President and Treasurer

CarMax Auto Owner Trust 2016-4 10-D