Company: LI
Filing Date: 2025-07-29
Form Type: 6-K
Source: 0001104659-25-071734
Chunk: 0

Company: Li Auto Inc.
Filing Date: 2025-07-29
Form: 6-K
Chunk 0
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<div align='center'>UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16 UNDER

THE SECURITIES EXCHANGE ACT OF 1934

For the month of July 2025

Commission File Number: 001-39407

Li Auto Inc.

(Registrant’s Name)

11 Wenliang Street

Shunyi District, Beijing 101399

People’s Republic of China

(Address of Principal Executive Offices)</div>

Indicate by check mark whether the registrant files or will file annual
reports under cover Form 20-F or Form 40-F.

<div align='center'>Form 20-FxForm 40-F¨

EXHIBIT INDEX</div>

| Exhibit No. |     | Description                                                                       |
| 99.1        |     | Press Release—Li Auto Inc. Launches Li i8, a Six-Seat Battery Electric Family SUV |

<div align='center'>SIGNATURES</div>

Pursuant to the requirements 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.

| Li Auto Inc. |

| By    |   | /s/ Tie Li                           |
| Name  | : | Tie Li                               |
| Title | : | Director and Chief Financial Officer |

Date:July 29, 2025