UK Exhaust System Market (2026-2031)

RESEARCH METHODOLOGY

The study relies extensively on secondary sources, including company annual reports and presentations, industry association publications, industry magazine articles, directories, technical handbooks, the World Economic Outlook, technical articles, and databases, to identify and collect information on the exhaust system market. In-depth interviews were conducted with primary respondents, including key industry participants, subject-matter experts, C-level executives of key market players (exhaust system providers, automotive OEMs, and technology suppliers), and industry consultants, among other experts, to obtain and verify critical qualitative and quantitative information and to assess market prospects.

Secondary Research

The secondary study involves three major activities, namely, background study, market understanding, and trends. Secondary sources referred to in this research study included the International Council on Clean Transportation (ICCT), Organisation Internationale des Constructeurs d'Automobiles (OICA); corporate filings (such as annual reports, investor presentations, and financial statements); and trade, business, and automotive associations. The secondary data was collected and analyzed to arrive at the overall market size, which was further validated by primary research.

Primary Research

Extensive primary research was conducted after gaining an understanding of the exhaust system market through secondary research. Several primary interviews were conducted with market experts from exhaust system providers, after-treatment device providers, and OEMs (vehicle manufacturers) across three major regions, namely, North America, Europe, and the Asia Pacific. Approximately 80% of the primary interviews were conducted with exhaust system component providers, and 20% with OEM participants. Primary data was collected through questionnaires, emails, and telephonic interviews. Various departments within organizations, including sales, operations, and administration, were contacted to provide a holistic viewpoint in the reports while canvassing primary interviews. After interacting with industry participants, brief sessions were conducted with experienced independent consultants to reinforce the findings from the primary interviews. This, along with the opinions of in-house subject matter experts, led to the findings delineated in the rest of this report.

Primary interviews have been conducted to gather insights, including exhaust system market sizing and forecast, future trends, and upcoming technologies in the exhaust system market. Data triangulation of these points was performed using information from secondary research and model mapping. Stakeholders from the demand and supply sides have been interviewed to understand their views on these points.

Note: Other designations include sales, marketing, and product managers.
Company tiers are based on the value chain; the revenue of the company is not considered.

To know about the assumptions considered for the study, download the pdf brochure

Market Size Estimation

A detailed market estimation approach was followed to estimate and validate the value and volume of the exhaust system market and other dependent submarkets, as mentioned below:

• The bottom-up approach was used to estimate and validate the size of the exhaust system market. The exhaust system market size by component, in terms of volume, was derived by multiplying the country-level fuel breakup of each vehicle type by the country-level production of each vehicle type (passenger cars, LCVs, trucks, and buses) (which was estimated using secondary research and then validated by primary interviews) for each vehicle type.
• The country-level exhaust system component market size, by volume, was multiplied by the country-level average OE component price (AOP) for each component and vehicle type to obtain the country-level component market by value.
• The summation of the country-level markets provides the regional level, and further addition yields the global exhaust system market by component (sensors, catalytic converters, downpipes, manifolds, mufflers, tailpipes, and hangers). The values for each country were summed to derive the total value of the exhaust systems market for after-treatment device components.
• The OE market size for exhaust system aftertreatment devices, including DOC, DPF, and SCR, was estimated using a bottom-up approach based on country and vehicle-type-level production data sourced from vehicle associations and secondary research. Fuel type share across vehicle segments was derived through model-level mapping, secondary research, and industry expert validation. Based on fuel type and country-specific emission regulations, aftertreatment device fitment and penetration were mapped across vehicle categories. Future estimates were developed using expected fuel-share trends, upcoming emission regulations, and aftertreatment adoption rates, while market value was calculated using OE fitment rates and average selling prices (ASPs) for aftertreatment devices.
• The aftermarket size of exhaust systems, by after-treatment devices—DOC, DPF, and SCR —by volume was derived by multiplying the regional-level parc of each vehicle type by the regional-level average miles driven for that type.
• The derived total miles driven at the regional level for each vehicle type were then multiplied by the regional-wise fuel share and the regional-level after-treatment devices penetration for each vehicle type. The estimated regional number of after-treatment devices was further divided by the regional-level average life of each after-treatment device for each vehicle type to analyze the aftermarket exhaust system by after-treatment device volume.
• The regional aftermarket size, by volume, was multiplied by the regional-level average selling price of each after-treatment device for each vehicle type, yielding the exhaust system aftermarket value by after-treatment device for each vehicle type.
• All key macro indicators affecting the revenue growth of the market segments and subsegments were accounted for, examined in detail, verified through primary research, and analyzed to obtain validated quantitative and qualitative data.
• The market data gathered was consolidated and added with detailed input, analyzed, and presented in this report.

Data Triangulation

After determining the global market's overall size using the above-mentioned methodology, the market was segmented into several segments and subsegments. Data triangulation and market breakdown procedures were employed to complete the overall market engineering process and arrive at the exact data for the market by volume and value for the key segments and subsegments, wherever applicable. The extrapolated market data was triangulated by studying various macro indicators and regional trends from both the OEM and exhaust system participants.

Report Objectives

• To define, describe, and forecast the size of the exhaust system market in terms of value (USD million/billion) and volume (thousand units) between 2026 and 2033 based on the following segments:
• OE market, by component (sensors, catalytic converters, downpipes, manifolds, mufflers, tailpipes, hangers)
• OE market, by vehicle type (passenger cars, LCVs, trucks, buses)
• OE market, by fuel type (gasoline, diesel)
• OE market, by aftertreatment device (DOC, DPF, LNT, SCR, GPF)
• Aftermarket, by aftertreatment device (DOC, DPF, SCR)
• By sales channel (OEM, aftermarket)
• OE market for off-highway vehicles, by equipment type (construction equipment, mining equipment, agricultural tractors)
• OE market for off-highway vehicles, by aftertreatment device (DOC, DPF, SCR)
• By region (Asia Pacific, Europe, North America, Rest of the World)
• To identify and analyze key drivers, restraints, opportunities, and challenges influencing the market
• To strategically profile key players and analyze their market share and core competencies
• To analyze recent developments, including product launches, deals, and expansions, by key market players
• To study the following with respect to the market
• Trends/Disruptions Impacting Customer Business
• Ecosystem Analysis
• Technology Analysis
• Supply Chain Analysis
• Patent Analysis
• Regulatory Landscape
• Case Study Analysis
• Key Stakeholders and Buying Criteria
• Key Conferences and Events
• Trade Analysis
• Pricing Analysis
• Impact of EU-FTA Trade Deal
• Impact of the Israel-Iran War