UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM10-K

(Mark One)

For the fiscal year ended December 31, 2018.2021.

or

For the transition period from                    to                    .

SANTANDER DRIVE AUTO RECEIVABLES TRUST2018-3

(Exact name of issuing entity as specified in its charter)

Commission file number of the issuing entity:333-206684-09

Central Index Key Number of issuing entity: 0001742444

SANTANDER DRIVE AUTO RECEIVABLES LLC

(Exact name of depositor as specified in its charter)

Commission file number of depositor:333-206684

Central Index Key Number of depositor: 0001383094

SANTANDER CONSUMER USA INC.

(Exact name of sponsor as specified in its charter)

Central Index Key Number of sponsor: 0001540151

Delaware

(State or other jurisdiction of incorporation or organization of the issuing entity)

82-6988645

(I.R.S. Employer Identification No. of the issuing entity)

c/o Santander Drive Auto Receivables LLC

1601 Elm Street, Suite 800

Dallas, Texas 75201

(Address of principal executive offices)

(214)292-1930

(Telephone number, including area code)

Securities Registered Pursuant to Section 12 (b) of the Securities Exchange Act of 1934: None

Securities Registered Pursuant to Section 12 (g) of the Securities Exchange Act of 1934: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.     Yes  ☐    No  ☒

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.     Yes  ☐    No  ☒

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15 (d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  ☒    No  ☐

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of RegulationS-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  ☒    No  ☐

Indicate by check mark if the disclosure of delinquent filers pursuant to Item 405 of RegulationS-K (§229.405 of this chapter) is not contained herein and will not be contained, to the best of the Registrants’ knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form10-K or any amendment to this Form10-K.  ☒

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, anon-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule12b-2 of the Exchange Act.

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ☐

Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report.  ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule12b-2 of the Act).    Yes  ☐    No  ☒

State the aggregate market value of the voting andnon-voting common equity held bynon-affiliates computed by reference to the price at which the common equity was last sold, or the average bid and asked price of such common equity, as of the last business day of the registrant’s most recently completed second fiscal quarter.

Not applicable.

DOCUMENTS INCORPORATED BY REFERENCE

List hereunder the following documents if incorporated by reference and the partPart of the Form10-K (e.g. Part I, Part II, etc.) into which the document is incorporated: (1) Any annual report to security holders; (2) Any proxy information statement; and (3) Any prospectus filed pursuant to Rule 424(b) or (c) under the Securities Act of 1933.

The listed documents should be clearly described for identification purposes (e.g., annual report to security holders for fiscal year ended December 24, 1980).

None.

2

3

breaches of representations and warranties made in connection with residential mortgage-backed securities sponsored by them. In the third-party actions, Nomura and Natixis allege that Wells Fargo Bank, as master servicer, primary servicer or securities administrator, failed to notify Nomura and Natixis of their own breaches, failed to properly oversee the primary servicers, and failed to adhere to accepted servicing practices. Natixis additionally alleges that Wells Fargo Bank failed to perform default oversight duties. Wells Fargo Bank has reached an agreement, in which it denies any wrongdoing,asserted counterclaims alleging that Nomura and Natixis failed to resolve these claims on a classwide basis for the 271 RMBS trusts currently at issue. The settlement agreement is subject to court approval. Separate lawsuits againstprovide Wells Fargo Bank making similar allegations filed by certain other institutional investors concerning 57 RMBS trusts in New York federalnotice of their representation and state court are not covered by the agreement. warranty breaches.

With respect to each of the foregoing litigations, Wells Fargo Bank believes plaintiffs’ claims are without merit and intends to contest the claims vigorously, but there can be no assurances as to the outcome of the litigations or the possible impact of the litigations on Wells Fargo Bank or the related RMBS trusts.

24

PART II

The following items have been omitted in accordance with General Instruction J to Form10-K:

Santander Consumer USA Inc. (“SC”) is a wholly-owned subsidiary of Santander Consumer USA Holdings Inc. (“SC Holdings”). On February 26, 2019, SC Holdings filed its Annual Report on Form10-K for the year ended December 31, 2018 and disclosed certain legal and regulatory matters. Additional information about SC Holdings and its consolidated subsidiaries, including information contained in required annual reports on Form10-K, quarterly reports on Form10-Q and current reports on Form8-K, is on file with the SEC under the name “Santander Consumer USA Holdings Inc.” and file number001-36270.None.

Not applicable.

35

PART III

The following items have been omitted in accordance with General Instruction J to Form10-K:

Substitute information provided in accordance with General Instruction J to Form10-K:

Item 1119 of Regulation AB. Affiliations and Certain Relationships and Related Transactions.Transactions

Information required by Item 1119 of Regulation AB has been omitted from this report on Form10-K in reliance on the Instruction to Item 1119.

Item 1122 of Regulation AB. Compliance with Applicable Servicing Criteria.Criteria

Each of SC andSantander Consumer USA Inc., Wells Fargo Bank, National AssociationN.A. and Computershare Trust Company, N.A. (each, a “Servicing Participant”) have been identified by the issuing entity as parties participating in the servicing function with respect to the pool assets held by the issuing entity. Each of the Servicing Participants has completed a report on an assessment of compliance with the servicing criteria applicable to it (each, a “Report on Assessment”), which Reports on Assessment are attached as exhibits to this Form10-K. In addition, each of the Servicing Participants has provided an attestation report (each, an “Attestation Report”) by one or more registered public accounting firms, which reports are also attached as exhibits to this Form10-K.

None of the Reports on Assessment or the related Attestation Reports has identified any material instances of noncompliance with the servicing criteria described in the related Report on Assessment as being applicable to such Servicing Participant.

Item 1123 of Regulation AB. Servicer Compliance Statements.Statements

SCSantander Consumer USA Inc. has been identified by the issuing entity as the servicer with respect to the asset pool held by the issuing entity. SCSantander Consumer USA Inc. has completed a statement of compliance with applicable servicing criteria (a “Compliance Statement”) signed by an authorized officer. The Compliance Statement is attached as an exhibit to this Form10-K.

46

PART IV

Item 15. Exhibits and Financial Statement Schedules.

Item 15.

Exhibit and Financial Statement Schedules

The exhibits listed below are either included or incorporated by reference as indicated:

5

Supplemental information to be Furnished With Reports Filed Pursuant to Section 15(d) of the Act by Registrants Which Have Not Registered Securities Pursuant to Section 12 of the Act.Act

No annual report, proxy statement, form of proxy or other proxy soliciting material has been sent to certificateholders, and the registrant does not presently contemplate sending any such materials subsequent to the filing of this report.

69

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Date: March 29, 201931, 2022

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