UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Schedule 13D

Under the Securities Exchange Act of 1934

(Amendment No. 20)*

China Yuchai International Limited

(Name of Issuer)

Common Stock, Par Value $0.10 Per Share

(Title of Class of Securities)

G210821050

(CUSIP Number)

Mr. Stephen Ho Kiam Kong

Director and Chief Executive Officer

Hong Leong Asia Ltd.

16 Raffles Quay

#26-00 Hong Leong Building

Singapore 048581

65-62208411

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

September 18, 2020

(Date of Event which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition which is the subject of this Schedule 13D, and is filing this schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following box.  ☐

Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Rule 13d-7 for other parties to whom copies are to be sent.

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

This Amendment No. 20 amends the Schedule 13D previously filed with the Securities and Exchange Commission by Hong Leong Asia Ltd. on June 19, 1995, as amended by Amendment No. 1 to Schedule 13D filed on February 17, 1998, as subsequently amended and restated by Amendment No. 2 to Schedule 13D filed on July 19, 2002, as further amended by Amendment No. 3 to Schedule 13D filed on September 10, 2003, as further amended by Amendment No. 4 to Schedule 13D filed on October 7, 2003, as further amended by Amendment No. 5 to Schedule 13D filed on October 15, 2003, as further amended by Amendment No. 6 to Schedule 13D filed on November 28, 2003, as further amended by Amendment No. 7 to Schedule 13D filed on October 27, 2009, as further amended by Amendment No. 8 to Schedule 13D filed on October 28, 2009, as further amended by Amendment No. 9 to Schedule 13D filed on August 30, 2010, as further amended by Amendment No. 10 to Schedule 13D filed on May 25, 2011, as further amended by Amendment No. 11 to Schedule 13D filed on June 7, 2011, as further amended by Amendment No. 12 to Schedule 13D filed on August 12, 2011, as further amended by Amendment No. 13 to Schedule 13D filed on August 23, 2011, as further amended by Amendment No. 14 to Schedule 13D filed on November 22, 2011, as further amended by Amendment No. 15 to Schedule 13D filed on July 14, 2014, as further amended by Amendment No. 16 to Schedule 13D filed on July 16, 2015, as further amended by Amendment No. 17 to Schedule 13D filed on July 5, 2016, as further amended by Amendment No. 18 to Schedule 13D filed on December 3, 2018, and as further amended by Amendment No. 19 to Schedule 13D filed on April 22, 2020 (as so amended, the “Statement”) with respect to the common stock, par value US$0.10 per share (the “Common Stock”), of China Yuchai International Limited, a Bermuda corporation (“CYI”). Capitalized terms used but not defined herein have the meanings given to them in the Statement.

Schedule 1 referred to in Item 2 is hereby amended and restated in its entirety by Schedule 1 hereto.

The first and second sentences of Item 4 of the Statement are hereby amended and restated in their entirety as follows:

Of the 17,994,993 shares of Common Stock covered by this Statement, 9,520,251 are owned of record by HLT, and in addition HLT holds the Special Share described in Item 6 of Amendment No. 2 to Schedule 13D filed with the Securities and Exchange Commission on July 19, 2002. The remaining 8,474,742 shares of Common Stock covered by this Statement are owned of record by Well Summit.

Items 5(a) and (b) of the Schedule are hereby amended and restated in their entirety as follows:

(a) and (b) As of September 17, 2020, each of the Reporting Persons beneficially owns the number and percentage of shares of Common Stock of CYI issued and outstanding listed opposite its name:

Note:

HLT owns of record 9,520,251 shares of Common Stock, which represents 23.3% of the 40,858,290 shares of Common Stock of CYI issued and outstanding as of September 17, 2020, based on information provided by CYI. HLT also holds the Special Share described in Item 6 of Amendment No. 2 to Schedule 13D filed with the Securities and Exchange Commission on July 19, 2002.

Well Summit owns of record 8,474,742 shares of Common Stock, which represents 20.7% of the 40,858,290 shares of Common Stock of CYI issued and outstanding as of September 17, 2020, based on information provided by CYI.

HLC has an indirect interest in the 9,520,251 shares of Common Stock directly owned by HLT, which represents 23.3% of the 40,858,290 shares of Common Stock of CYI issued and outstanding as of September 17, 2020, based on information provided by CYI.

The 17,994,993 shares of Common Stock beneficially owned by HLA represents 44.0% of the 40,858,290 shares of Common Stock of CYI issued and outstanding as of September 17, 2020, based on information provided by CYI.

Shares held of record by HLT: HLT (together with HLC by virtue of its ownership of HLT and HLA by virtue of its ownership of HLC) has shared voting and dispositive power over the 9,520,251 shares of Common Stock owned by HLT and the Special Share described in Item 6 of Amendment No. 2 to Schedule 13D filed with the Securities and Exchange Commission on July 19, 2002.

Shares held of record by Well Summit: Well Summit (together with HLA by virtue of its ownership of Well Summit) has shared voting and dispositive power over the 8,474,742 shares of Common Stock owned by Well Summit.

Item 5(c) of the Schedule is hereby amended as follows:

Well Summit has effected the following purchase of shares of Common Stock during the 60 days prior to the date hereof:

Except as set forth above, none of the Reporting Persons have effected any transaction in shares of Common Stock during the past 60 days.

Joint Filing Agreement, dated August 30, 2010, among Hong Leong Asia Ltd., HL Technology Systems Pte Ltd, Hong Leong (China) Limited and Well Summit Investments Limited (incorporated herein by reference to Exhibit 7 to Amendment No. 9 to Schedule 13D filed with the Securities and Exchange Commission on August 30, 2010).

SIGNATURE

After reasonable inquiry and to the best of his or her knowledge and belief, each of the undersigned certifies that the information in this statement is true, complete and correct.

Exhibit Index

Page 10 of 12

SCHEDULE I

The following is a list of the directors and executive officers of the Reporting Persons:

DIRECTORS AND EXECUTIVE OFFICERS OF

WELL SUMMIT INVESTMENTS LIMITED

Executive Officers

Nil

DIRECTORS AND EXECUTIVE OFFICERS OF

HL TECHNOLOGY SYSTEMS PTE LTD

Executive Officers

Nil

Page 11 of 12

DIRECTORS AND EXECUTIVE OFFICERS OF

HONG LEONG (CHINA) LIMITED

Executive Officers

Nil

Page 12 of 12

DIRECTORS AND EXECUTIVE OFFICERS OF

HONG LEONG ASIA LTD.