Exhibit 99.1

Joint Filing Agreement

In accordance with Rule 13d-1(k) promulgated under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree to the joint filing on behalf of each of them of a statement on Schedule 13G (including amendments thereto) with respect to the Class A ordinary shares, US$0.00001 par value per share, of XPeng Inc., a Cayman Islands company, and that this Agreement may be included as an Exhibit to such joint filing. This Agreement may be executed in any number of counterparts, all of which taken together shall constitute one and the same instrument.

[Signature Page Follows]

IN WITNESS WHEREOF, the undersigned hereby execute this Agreement as of February 10, 2021.

HENG XIA
By:	/s/ Heng Xia
Name:	Heng Xia

EFFICIENCY INVESTMENT LIMITED
By:	/s/ Heng Xia
Name:	Heng Xia
Title:	Authorized Signatory