Please find enclosed Press Release.

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 5, 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: Press Release Dear Sir/Madam, Please find enclosed a copy of the Press Release with respect to Unaudited Financial Results (Standalone and Consolidated) for the quarter ended on June 30, 2026. 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 PRESS RELEASE Q1 FY2027 Tenneco Clean Air India Limited Announces Q1FY2027 Results Opens FY2027 with value-added revenue* up 18.4%, outperforms industry volume growth Sustains EBITDA margin of 17.9% despite market headwinds DCx Da Vinci suspension continues its market disruption; Company earns strong industry recognition Gurugram, India, 5 August 2026: Tenneco Clean Air India Limited ("Tenneco India") (BSE/NSE: TENNIND), a leading Tier-1 automotive component manufacturer supplying Clean Air, Powertrain and Advanced Ride Technologies (ART) solutions to major OEMs, today announced its financial results for the first quarter ended June 30, 2026 (Q1 FY2027). Financial Highlights (INR Millions): Q1 Q1 YoY FY2027 FY2026 Change Revenue from 15,448 12,856 20.2% Operations Value-added 13,816 11,665 18.4% Revenue (VAR)* Clean Air & 6,626 6,044 9.6% Powertrain Solutions Advanced Ride 7,190 5,621 27.9% Technologies EBITDA/ 2,469 2,289 7.9%/ Margin (VAR) 17.9% 19.6% (175) bps 1,652 1,681 -1.7%/ PAT/ Margin (VAR) 12.0% 14.4% (245) bps *VAR (Value Added Revenue) is used as the primary performance metric as it excludes pass-through substrate costs from revenue from operations and better reflects the underlying operating performance, margins, and comparability across periods • EBITDA/Margin: Q1 FY 2027 was affected by significant commodity increases due to the current geopolitical situation and the cost of moving from a private to a listed public company. • PAT/Margin (VAR): PAT was broadly stable year-on-year. The prior-year quarter included a one-time interest income benefit of approximately ₹187 million (net of tax) related to the sale of the Motocare entity. Excluding this non-recurring item, PAT growth in Q1 FY2027 would have been broadly in line with EBITDA growth. Page | 1 PRESS RELEASE Q1 FY2027 Business Highlights: Tenneco Clean Air India commenced FY2027 on a strong footing, with Value Added Revenue (VAR) growing 18.4% year-on-year to INR 13,816 million in Q1 FY2027, outperforming industry volume growth of 16.2%1 (Tenneco’s served addressable market2). The quarterly performance was underpinned by sustained execution of new program wins, higher content per vehicle, stable exports, and an increasing customer base across both Advanced Ride Technologies (ART) and Clean Air & Powertrain (CA&PT) businesses. EBITDA margin remained resilient at 17.9%, underscoring the strength of our operating model supported by productivity improvements, commercial discipline and operational excellence. This was achieved despite strong market headwinds due to commodities escalation and the cost of moving from a private to a listed public company. Profit after tax stood at INR 1,652 million, translating into a PAT margin of 12.0%. Key Highlights for Q1 FY2027 During the quarter, Tenneco Clean Air India continued to strengthen its market position through strategic customer acquisitions, technology advancements, and operational initiatives: • Advanced Ride Technologies: o Expanded the DCx Da Vinci suspension footprint through multiple new application wins across existing customers, further reinforcing our leadership position in the ART segment. Additionally, four new customers were added in 2026, and three models for DCx applications, further strengthening and diversifying our customer base. o Driven by the continued success of DCx, our passenger vehicle shock absorber and strut value market share expanded by 300 bps YoY to 55% in FY2026, further strengthening our leadership in this product category. o Introduced DCx32, latest variant in the DCx family, targeting smaller vehicles (A/B segment), thereby further increasing the addressable market. o Successfully completed fitment and benchmarked performance of MARD (Mechanical Adaptive Roll Damping) dampers with a leading domestic OEM, further expanding product portfolio through comfort and safety features. This was achieved completely in India. 1. Source: Society of India Automotive Manufacturers and TMA for tractors; 2. Addressable market includes passenger vehicles and commercial trucks. Page | 2 PRESS RELEASE Q1 FY2027 • Clean Air & Powertrain (CA & PT): o Secured multiple new program nominations from leading passenger and commercial vehicle OEMs, covering ignition, hot-end, cold-end, and pipe assembly applications, reinforcing growth across key product segments. Some of the noteworthy wins were as follows - ▪ Secured a strategic Spark Plug order from India's leading passenger vehicle OEM, leveraging existing customer relationships and technical expertise to enter a new whitespace opportunity ▪ A new passenger vehicle exhaust program (hot end) from a leading Indian passenger car OEM. ▪ A new CNG platform cold-end assembly program from a global OEM for two models in India. ▪ An upcoming 2.0L engine emission after treatment system program from a leading domestic commercial vehicle OEM for their SCV range. o Reinforced spark plugs compatibility with flex-fuel applications up to E85, thereby being ready for alternative fuels and strengthening our diversified powertrain portfolio. • Awards and Recognition: o Won the Innovation and Performance Award from Mahindra and the Ride Performance Award 2026 from The Economic Times. o Won “Technology & Innovation Award” from DICV (Daimler India Commercial Vehicles), highlighting Tenneco Clean Air India’s innovation and technology leadership. Management Remarks: Arvind Chandra, Whole-Time Director and CEO, Tenneco India, said: “Our strong start to FY2027 reflects the resilience of our diversified business model, disciplined execution, and continued focus on delivering technology-led solutions to our customers. During the quarter, we delivered strong double-digit Value-Added Revenue growth, outpacing growth in our served markets, further strengthening our competitive position. We continued to gain market share across key segments, with FY2026 value market share3 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 spanning hot-end aftertreatment, cold-end solutions and Powertrain applications. 3. Source: Crisil Page | 3 PRESS RELEASE Q1 FY2027 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. These wins, together with progress in localizing advanced global technologies and enhancing capabilities for alternative fuel and next-ge [Showing first 8,000 characters — download PDF for full document]