Viscosity Index Improvers Market Size, Share & Trends Analysis Report by Product (Polymethacrylate, Ethylene Propylene Copolymer, Polyisobutylene, Hydrostyrene Diene Copolymer), By Application (Engine Oils, Transmission Fluids, Gear Oils), By Region, And

Viscosity Index Improvers Market Summary

The global viscosity index improvers market size was estimated at USD 2,847.6 million in 2024 and is projected to reach USD 4,282.7 million by 2033, growing at a CAGR of 4.7% from 2025 to 2033. The viscosity modifiers and viscosity index improvers are same.

The viscosity modifiers (also known as viscosity index improvers) are key polymeric additives used to enhance the temperature-dependent behavior of lubricants and oils, ensuring consistent performance across varying thermal conditions. The market growth is primarily driven by the expanding automotive and industrial lubricant sectors, where the demand for high-performance, fuel-efficient, and low-viscosity lubricants continues to rise.

Increasing production of passenger and commercial vehicles, coupled with stricter emission norms, has accelerated the adoption of viscosity index improvers in engine oils, transmission fluids, and hydraulic lubricants.

Another major growth driver is the increasing emphasis on fuel efficiency and emission reduction. Modern engine designs operate under higher temperatures and pressures, requiring lubricants that maintain optimal viscosity and film strength. Viscosity index improvers help achieve better energy efficiency by reducing frictional losses, improving cold-start performance, and extending oil drain intervals. The development of advanced hydrogenated styrene-diene and polymethacrylate-based VIIs is enabling the formulation of next-generation lubricants with superior shear stability and oxidation resistance. Additionally, the growing adoption of synthetic and semi-synthetic lubricants in both automotive and industrial sectors is further strengthening market demand for high-quality viscosity modifiers.

Furthermore, the rapid emergence of electric and hybrid vehicles presents new opportunities for viscosity index improver manufacturers. Electric vehicle (EV) drivetrains and e-transmissions require specialized lubricants with controlled thermal and rheological properties, creating demand for tailor-made VIIs compatible with low-viscosity fluids. The increasing industrial automation and expansion of heavy machinery, construction, and marine sectors also support lubricant consumption, reinforcing the market’s long-term growth outlook. Overall, ongoing product innovation, evolving engine technologies, and the global shift toward sustainability are expected to drive steady expansion in the viscosity index improvers market through 2033.

Global Viscosity Index Improvers Market Report Segmentation

This report forecasts volume & revenue growth at the global level and provides an analysis of the latest industry trends in each of the sub-segments from 2018 to 2033. For this study, Grand View Research has segmented the global viscosity index improvers market report based on product, application, and region:

• Product Outlook (Volume, Kilotons; Revenue, USD Million, 2018 - 2033)
• Polymethacrylater (PMA)
• Ethylene Propylene Copolymer (OCP)
• Hydrostyrene Diene Copolymer (HSD)
• Polyisobutylene (PIB)
• Other Product (if any)
• Application Outlook (Volume, Kilotons; Revenue, USD Million, 2018 - 2033)
• Engine Oils
• Transmission Fluids
• Hydraulic Fluids
• Gear Oils
• Electric Vehicle (EV) Fluids
• Other Application
• Regional Outlook (Volume, Kilotons; Revenue, USD Million, 2018 - 2033)
• North America
• U.S.
• Canada
• Mexico
• Europe
• Germany
• UK
• France
• Italy
• Spain
• Asia Pacific
• China
• India
• Japan
• South Korea
• Latin America
• Brazil
• Argentina
• Middle East & Africa
• Saudi Arabia
• South Africa

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