The emission control catalyst market was estimated at USD 45.8 billion in 2022 and is likely to grow at a CAGR of 6.9% during 2023-2028 to reach USD 68.54 billion in 2028. Emission control systems refer to the market for technologies and products that regulate and lessen emissions from internal combustion engines. The market is being driven by escalating environmental laws as well as rising consumer demand for vehicles that are cleaner and more fuel-efficient.