GM Financial Consumer Automobile Receivables Trust 2018-1 FWP Free writing prospectus

Free Writing Prospectus

Filed Pursuant to Rule 433

Filed January 3, 2018

Registration Statement Nos.333-220233

and333-220233-01

Free Writing Prospectus dated January 3, 2018

GM Financial Consumer Automobile Receivables Trust2018-1

Issuing Entity

AFS SenSub Corp.

Depositor

Sponsor and Servicer

The depositor has prepared a prospectus which describes the notes to be issued by the issuing entity. You should review the prospectus in its entirety before deciding to purchase any of the notes.

Ratings

The notes must receive at least the following ratings from Fitch Ratings, Inc. orFitch, and Moody’s Investors Service, Inc., orMoody’s, in order to be issued.

	Fitch	Moody’s
Class A-1 Notes	F1+sf	P-1 (sf)
Class A-2-A Notes	AAAsf	Aaa (sf)
Class A-2-B Notes	AAAsf	Aaa (sf)
Class A-3 Notes	AAAsf	Aaa (sf)
Class A-4 Notes	AAAsf	Aaa (sf)
Class B Notes	AAsf	Aa3 (sf)
Class C Notes	Asf	A2 (sf)

Joint Bookrunners

Barclays BofA Merrill Lynch MUFG TD Securities

Co-Managers for the Class A Notes

BMO Capital Markets J.P. Morgan Lloyds Securities SMBC Nikko Wells Fargo Securities

The depositor has filed a registration statement (including a prospectus) with the SEC for the offering to which this communication relates. Before you invest, you should read the prospectus in that registration statement and other documents the depositor has filed with the SEC for more complete information about the depositor, the issuing entity and this offering. You may get these documents for free by visiting EDGAR on the SEC website at www.sec.gov. Alternatively, the depositor, any underwriter or any dealer participating in the offering will arrange to send you the prospectus if you request it by calling1-888-603-5847.