Exhibit 5.1

Our ref      KKZ/788453-000007/31853989v2

ECARX Holdings Inc.
12/F, Tower 2, Park Place,
88 Baise Road, Xuhui District,
Shanghai 200231

People's Republic of China

27 March 2025

Dear Sir or Madam

ECARX Holdings Inc.

We have acted as Cayman Islands legal advisers to ECARX Holdings Inc. (the "Company") in connection with the Company’s registration statement on Form F-3, including all amendments or supplements thereto (the "Registration Statement"), filed with the Securities and Exchange Commission (the "Commission") under the U.S. Securities Act of 1933, as amended to date relating to the follow on public offering by the Company of up to 28,750,000 Class A ordinary shares of par value US$0.000005 each in the Company (the "Shares") in accordance with an underwriting agreement to be entered into by the Company (the "Transaction Agreement").

We are furnishing this opinion as Exhibits 5.1, 8.1 and 23.2 to the Registration Statement.

For the purposes of this opinion, we have reviewed only originals, copies or final drafts of the following documents:

The following opinions are given only as to, and based on, circumstances and matters of fact existing and known to us on the date of this opinion letter. These opinions only relate to the laws of the Cayman Islands which are in force on the date of this opinion letter. In giving these opinions we have relied (without further verification) upon the completeness and accuracy, as of the date of this opinion letter, of the Director's Certificate and the Certificate of Good Standing. We have also relied upon the following assumptions, which we have not independently verified:

Based upon the foregoing and subject to the qualifications set out below and having regard to such legal considerations as we deem relevant, we are of the opinion that:

The opinions expressed above are subject to the following qualifications:

Except as specifically stated herein, we make no comment with respect to any representations and warranties which may be made by or with respect to the Company in any of the documents or instruments cited in this opinion or otherwise with respect to the commercial terms of the transactions, which are the subject of this opinion.

We hereby consent to the filing of this opinion as an exhibit to the Registration Statement and to the reference to our name under the heading "Legal Matters", "Taxation" and elsewhere in the Registration Statement. In giving such consent, we do not thereby admit that we come within the category of persons whose consent is required under Section 7 of the U.S. Securities Act of 1933, as amended, or the Rules and Regulations of the Commission thereunder.

Yours faithfully

/s/ Maples and Calder (Hong Kong) LLP

Maples and Calder (Hong Kong) LLP

Exhibit 99.1

ECARX Holdings Inc. Announces Proposed Offering of 25,000,000 Class A Ordinary Shares

SHANGHAI, March 27, 2025 (GLOBE NEWSWIRE) -- ECARX Holdings Inc. (Nasdaq: ECX) (“ECARX” or the “Company”), a global mobility tech provider, announced the commencement of an underwritten public offering (the “Offering”) of 25,000,000 Class A ordinary shares of the Company (the “Ordinary Shares”). The Company intends to grant the underwriters in the Offering a 30-day option to purchase up to an additional 3,750,000 Ordinary Shares.

Deutsche Bank AG, Hong Kong Branch and China International Capital Corporation Hong Kong Securities Limited are acting as representatives of the underwriters in the Offering.

The Ordinary Shares will be offered under the Company’s shelf registration statement on Form F-3 which was declared effective by the Securities and Exchange Commission (the “SEC”) on December 27, 2024. A preliminary prospectus supplement related to the proposed Offering has been filed with the SEC. The registration statement on Form F-3 and the preliminary prospectus supplement are available on the SEC website at: http://www.sec.gov. Before you invest, you should read the shelf registration statement, prospectus supplement (including the accompanying base prospectus) and the documents incorporated by reference therein. Copies of the preliminary prospectus supplement and the accompanying prospectus may be obtained from (1) Deutsche Bank AG, Hong Kong Branch, Level 60, International Commerce Centre, 1 Austin Road West, Kowloon, Hong Kong; and (2) China International Capital Corporation Hong Kong Securities Limited, 29th Floor, One International Finance Centre, 1 Harbour View Street, Central, Hong Kong.

The Company plans to use the net proceeds from the Offering primarily for (i) research and development initiatives, (ii) establishment of overseas supply chain networks, and (iii) general corporate purposes.

This press release shall not constitute an offer to sell or a solicitation of an offer to purchase any securities, nor shall there be a sale of the securities in any state or jurisdiction in which such an offer, solicitation or sale would be unlawful.

This press release contains information about the pending offering of the Ordinary Shares, and there can be no assurance as to whether or when the offering may be completed, or as to the actual size or final terms of the Offering.

About ECARX Holdings Inc.

ECARX (Nasdaq: ECX) is a global automotive technology provider with capabilities to deliver turnkey solutions for next-generation smart vehicles, from the system on a chip (SoC), to central computing platforms, and software. As automakers develop new electric vehicle architectures from the ground up, ECARX is developing full-stack solutions to enhance the user experience, while reducing complexity and cost.

Founded in 2017 and listed on the Nasdaq in 2022, ECARX now has over 1,900 employees based in 12 major locations in China, UK, USA, Sweden and Germany. The co-founders are two automotive entrepreneurs, Chairman and CEO Ziyu Shen, and Eric Li (Li Shufu), who is also the founder and chairman of Zhejiang Geely Holding Group — with ownership interests in global brands including Lotus, Lynk & Co, Geely Galaxy, Polestar, smart, and Volvo Cars. ECARX also works with other well-known automakers, including Volkswagen Group, FAW and Dongfeng Peugeot-Citroën. To date, ECARX products can be found in over 8.1 million vehicles worldwide.

Safe Harbor Statement

This release contains statements that are forward-looking statements within the meaning of the U.S. Private Securities Litigation Reform Act of 1995. These statements are based on management’s beliefs and expectations as well as on assumptions made by and data currently available to management, appear in a number of places throughout this document and include statements regarding, amongst other things, results of operations, financial condition, liquidity, prospects, growth, strategies, and the industry in which we operate. The use of words “expects,” “intends,” “anticipates,” “estimates,” “predicts,” “believes,” “should,” “potential,” “may,” “preliminary,” “forecast,” “objective,” “plan,” or “target,” and other similar expressions are intended to identify forward-looking statements. These forward-looking statements are not guarantees of future performance and are subject to a number of risks and uncertainties that could cause actual results to differ materially, including, but not limited to statements regarding our intentions, beliefs, or current expectations concerning, among other things, results of operations, financial condition, liquidity, prospects, growth, strategies, future market conditions or economic performance and developments in the capital and credit markets and expected future financial performance, and the markets in which we operate.

For a discussion of these and other risks and uncertainties that could cause actual results to differ materially from those expressed in any forward-looking statement, see ECARX’s filings with the U.S. Securities and Exchange Commission. ECARX undertakes no obligation to update or revise forward-looking statements to reflect subsequent events or circumstances, except as required by applicable law.

Investor Contacts:

Rene Du 

ir@ecarxgroup.com

Media Contacts:

ecarx@christensencomms.com