Please find attached Investor Presentation for Q1FY27 Results.

TENNECO CLEAN AIR INDIA LIMITED (formerly known as Tenneco Clean Air India Private Limited) CIN: L29308TN2018FLC126510 Telephone: +2135 612501/506 Email: Tennecoindiainfo@tenneco.com Website: www.tennecoindia.com Date: August 6, 2026 To To National Stock Exchange of India Limited BSE Limited Exchange Plaza, C-1, Block G Phiroze Jeejeebhoy Towers Bandra Kurla Complex, Dalal Street, Bandra (E), Mumbai – 400051 Mumbai – 400001 Scrip Symbol: TENNIND Scrip Code: 544612 Subject: Investor Presentation Dear Sir/Madam, Pursuant to Regulation 30 of the Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015 and in continuation of our intimation letter dated July 30, 2026, wherein we had informed the schedule of the Earnings Conference Call for discussing the financial results for the quarter ended on June 30, 2026, please find enclosed herewith the presentation to be made at the earnings conference call scheduled on August 6, 2026 at 4:00 PM (IST). Further, the above publication is also being made available on the Company’s website at: https://tennecoindia.com/investor-relations/. You are requested to kindly take the same on record. Sincerely, For Tenneco Clean Air India Limited Roopali Singh Company Secretary and Compliance Officer Membership No: A15006 Place: Gurugram Encl: as above Registered Office: RNS2, Nissan Supplier Park, SIPCOT Industrial Park Oragadam Industrial Corridor, Sriperumbudur, Taluk, Kancheepuram, Tamil Nadu, India, 602105 Q1 FY2027 Strong Growth, Market Leadership and Profitability Resilience In ves to r P res en t at io n A u g 2026 Disclaimer Important Disclosures and Forward-Looking Statement This presentation and the accompanying slides (the “Presentation”), prepared by Tenneco Clean Air India Limited (the “Company” or “TCAIL”), is furnished solely for informational purposes without regard to any specific investment objectives, financial situations, or informational needs of any particular person, and shall not constitute, or be relied upon in connection with, any offer, solicitation, or invitation to subscribe for or purchase any securities of the Company. No offering of securities will be made except by means of a statutory offering document containing detailed information about the Company. Nothing herein shall form the basis of, or be relied on in connection with, any contract or binding commitment whatsoever. This presentation and its contents are confidential and may not be copied, reproduced, distributed, or disseminated, directly or indirectly, in any manner without the prior written consent of the Company. Any failure to comply with these restrictions may constitute a violation of applicable law in certain jurisdictions. By reviewing this presentation, you agree to be bound by these restrictions and to maintain strict confidentiality regarding the information contained herein. The information and data contained in this presentation have been compiled from sources the Company believes to be reliable; however, the Company makes no representation or warranty, express or implied, as to the accuracy, completeness, fairness, or reasonableness of such information. This presentation may not contain all of the information that you may consider material, and no reliance should be placed on the contents herein. The Company expressly disclaims any and all liability for any loss arising from, or in reliance upon, the whole or any part of this presentation. This presentation may contain forward-looking statements, including, without limitation, statements regarding the Company’s market opportunity, financial performance, growth prospects, strategy, technological developments, and business plans. Such statements can often be recognized by the use of words such as “expects,” “plans,” “will,” “estimates,” “projects,” “intends,” or words of similar meaning. These forward-looking statements are not guarantees of future performance and are subject to known and unknown risks, uncertainties, and assumptions that are difficult to predict, including but not limited to macro-economic conditions, competitive pressures, regulatory changes, changes in market preferences, execution challenges, and other risks. Actual results may differ materially and adversely from those expressed or implied herein. The Company undertakes no obligation to update or revise any forward-looking statements, whether as a result of new information, future events, or otherwise, except as required by applicable law. Any forward-looking statements or projections made by third parties included in this Release are not adopted by the Company, and the Company is not responsible for such third-party information. Relentless Execution Delivering Growth, Market Share Expansion, and New Customer Additions CEO Update Operational “Our strong start to FY2027 reflects the resilience of our diversified business model, disciplined execution, and continued focus onH dieglivhelriigngh tteschnology-led solutions to our customers. During the quarter, we delivered strong double-digit Value-Added Revenue growth, outpacing growth in our served markets. We continued to gain market share across key segments, with FY2026 value market share increasing to 58% (+1% YoY) in commercial vehicle Clean Air Solutions, 55% (+3% YoY) in passenger vehicle shock absorbers and struts and sustained 68% in off-highway Clean Air Solutions. In CA & PT, we strengthened customer partnerships through strategic program nominations across passenger vehicle and commercial vehicle platforms. During the quarter, we secured an order for spark plugs with one of the largest passenger vehicle OEM in India, leveraging our technical expertise and strong existing relationships across other product segments to enter a new whitespace opportunity. In ART, we continued to win new programs with existing customers while adding new customers for DCx Da Vinci, further reinforcing our leadership position in this product segment. Arvind Chandrasekharan In export markets, ART secured its maiden order from a leading European ATV manufacturer, gaining entry into a new WTD and CEO whitespace. Additionally, the company won a heat shield (PT segment) order from Tenneco America further strengthening its export market position. During the quarter, we were recognized by leading OEMs for innovation, technology leadership, and operational performance, further reinforcing the trust our customers place in us. Looking ahead, we remain focused on executing our strategy, investing in future technologies, and creating long-term value for all stakeholders.” 18.4% 4 58% 55% New customers won in the ART segment Q1 FY2027 CV – CA* PV – ART** Note:: VAR Growth New Customers FY2026 Market * Commercial vehicle - Clean Air Solutions ** Passenger vehicle - shock absorbers and struts (YoY) Share*** ***Source : CRISIL Disciplined Margin Management Via Strong Execution CFO Update Operational Highlights “We delivered another quarter of healthy growth and resilient profitability despite significant commodity increases due to the current geopolitical situation and the cost of moving from a private to a listed public company. Revenue from operations increased to INR 15.4 billion (+20.2% YoY), while Value Added Revenue increased to INR 13.8 billion (+18.4% YoY), driven by higher volumes and new program launches. EBITDA for the quarter increased to INR 2,469 million (+7.9% YoY), with EBITDA margin of 17.9% on VAR. By actively leveraging the P3 framework, we continue to drive continuous improvement across safety, quality, delivery, and cost, while maintaining facilities that meet the highest global benchmarks. This has helped us deliver good performance despite market headwinds. Mahender Chhabra PAT grew similar to EBITDA YoY growth excluding one-time benefit recorded in the corresponding quarter last year from selling our Motocare business and other one-off income. Chief Financial Officer As we anticipate further headwinds, [Showing first 8,000 characters — download PDF for full document]