Spark Plug Market Report 2026

The spark plug market size has grown strongly in recent years. It will grow from $4.36 billion in 2025 to $4.58 billion in 2026 at a compound annual growth rate (CAGR) of 5.1%. The growth in the historic period can be attributed to expansion of internal combustion engine vehicle production, growth of global automotive parc, rising demand for replacement spark plugs, widespread use of gasoline engines, improvements in ignition system reliability.

The spark plug market size is expected to see steady growth in the next few years. It will grow to $5.51 billion in 2030 at a compound annual growth rate (CAGR) of 4.7%. The growth in the forecast period can be attributed to increasing demand for low-emission combustion systems, rising adoption of premium spark plugs for efficiency, expansion of hybrid vehicle fleets using ice components, growing aftermarket customization trends, increasing focus on extended service life. Major trends in the forecast period include increasing adoption of high-performance spark plugs, rising use of iridium and platinum spark plugs, growing focus on fuel efficiency enhancement, expansion of aftermarket replacement demand, improved thermal and wear resistance designs.

The rising automotive production is expected to drive the growth of the spark plug market. Global vehicle production is increasing due to economic growth, urbanization, and higher consumer purchasing power. Spark plugs are critical components in gasoline engines, responsible for igniting the air-fuel mixture in the combustion chamber to start and sustain engine operation. For instance, in March 2024, Statistics Canada reported 1,714,356 new motor vehicle registrations in 2023, marking a 13.4% increase from 2022. Therefore, the expansion of automotive production is fueling the demand for spark plugs.

Major companies in the spark plug market are advancing technologies such as double precious metal construction to enhance ignition performance, durability, and fuel efficiency. This design uses durable platinum or iridium on both the center and ground electrodes, providing consistent ignition and extended service life. For example, in November 2024, Niterra, a Japan-based automotive parts manufacturer, launched new “Laser Iridium” and precious-metal spark plug models (e.g., DILFR6N-T, ZFR5BIX) for four-wheel vehicles, covering recent models from Toyota, Volkswagen Group, Renault, and Lexus. These plugs feature laser-welded iridium center electrodes and, in some cases, platinum ground electrodes, ensuring stable ignition, improved combustion, reduced misfires, longer service intervals, and better emissions compliance.

In September 2025, Niterra Co., Ltd. acquired DENSO Corporation’s spark plug and exhaust gas sensor businesses for USD 1.16 billion (JPY 180.6 billion). This acquisition strengthens Niterra’s internal combustion engine (ICE) component portfolio by integrating DENSO’s production systems and global sales channels, enabling more efficient supply and enhanced market presence. DENSO Corporation, also based in Japan,

Major companies operating in the spark plug market report include Robert Bosch GmbH, Denso Corporation, NGK Spark Plug Co. Ltd., Zhuzhou Torch Spark Plug Co. Ltd., ACDelco, Autolite (India) Limited, Motorcraft, Pulstar Inc., Stitt Spark Plug Company, E3 Sparkplugs, Brisk Co., KLG Spark Plugs, Champion Spark Plug Company, Federal-Mogul Ignition, Torch Spark Plug Co. Ltd., UCI-FRAM Group, Nippon Denso Spark Plug Division, Screwman Spark Plug Co. Ltd., SplitFire Spark Plug Company, Accel Ignition Products, MSD Performance, BERU Spark Plugs, AC Spark Plug, ISKRA Automotive, HELLA Ignition Systems.

Asia-Pacific was the largest region in the spark plug market in 2025. The regions covered in the spark plug market report include Asia-Pacific, South East Asia, Western Europe, Eastern Europe, North America, South America, Middle East, Africa. The countries covered in the spark plug market report include Australia, Brazil, China, France, Germany, India, Indonesia, Japan, Taiwan, Russia, South Korea, UK, USA, Canada, Italy, Spain.

The spark plug market consists of sales of platinum spark plugs, silver spark plugs, and surface discharge spark plugs. Values in this market are ‘factory gate’ values, that is, the value of goods sold by the manufacturers or creators of the goods, whether to other entities (including downstream manufacturers, wholesalers, distributors, and retailers) or directly to end customers. The value of goods in this market includes related services sold by the creators of the goods.

The market value is defined as the revenues that enterprises gain from the sale of goods and/or services within the specified market and geography through sales, grants, or donations in terms of the currency (in USD unless otherwise specified).

The revenues for a specified geography are consumption values that are revenues generated by organizations in the specified geography within the market, irrespective of where they are produced. It does not include revenues from resales along the supply chain, either further along the supply chain or as part of other products.

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