SGS INSPIRE Fuels Monthly: November 2025 Edition
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IN FOCUS: Technical report, Global assessment of diesel quality and its impact on emissions and heavy-duty engine reliability
During November, SGS released a global technical assessment of diesel fuel quality parameters and their implications for heavy-duty vehicle (HDV) engine performance, durability, and emissions. Covering the 2023–2025 period, the study evaluates critical fuel properties, including sulfur content, cetane number, aromatics, lubricity, particle contamination, volatility, oxidation stability, density, inorganic elements, heat of combustion, carbon content, and climate-related characteristics.
Based on SGS’s worldwide fuel survey data, the report links diesel fuel quality to global trade flows, refinery processing practices, and evolving regulatory frameworks. By connecting these parameters to combustion efficiency, after-treatment system compatibility, and emissions formation, the assessment provides a comprehensive understanding of how diesel quality influences environmental performance and operational reliability in compression-ignition engines.
The report delivers exclusive insights into global diesel quality trends and specifications, serving as a valuable reference for industry professionals, regulators, and fuel producers seeking to benchmark performance and anticipate emerging market standards.
A summary version of the study is available to subscribers and provides an overview of the key findings, which can be accessed here.
The full technical report, including all parameters and detailed analysis, is available for sale at through this link.
What's new?
In November, INSPIRE launched a new set of reports delivering updated insights on critical fuel and energy market dynamics:
• Greece: overview of diesel policy, market and quality
• Malta: overview of gasoline policy, market and quality
• Colombia: overview of exhaust emissions standards and vehicle fleets
• Canada: overview of gasoline policy, market and quality
• The Republic of Korea: overview of electric vehicles, policies and fleet
• Japan: overview of diesel policy, market and quality
• Tanzania: overview of gasoline policy, market and quality
• European Union: overview of biobased gasoline
What’s in the pipeline?
Fueling the Future: 2025 Trends & 2026 Market Outlook Webinar
This December, SGS INSPIRE will host an exclusive webinar unpacking the most important fuel market and policy trends for 2025 and delivering a forward-looking market outlook for 2026, covering fuel quality evolution, emissions tightening, and the accelerating shift toward alternative and low-carbon fuels.
In this executive briefing, SGS INSPIRE analysts will summarize the key fuel quality and emissions developments of 2025, highlight major regional fuel market shifts, and present a strategic 2026 outlook covering fuel standards, alternative fuels, and evolving emissions requirements, followed by a live Q&A session.
Reserve your spot and gain early access to what’s coming next in global fuel markets by registering for the session that best matches your schedule:
📍 Session 1: December 10 – 15:00–16:00 SGT (16:00–17:00 JST / 09:00–10:00 CET)
📍 Session 2: December 11 – 08:00–09:00 CST (15:00–16:00 CET)
Full session recording will be shared with all registered participants.
ABOUT SGS INSPIRE
SGS INSPIRE is the digital hub of SGS Fuels and Transport Intelligence, covering conventional, alternative and emerging fuels and energy sources, vehicles, engines, and powertrain emissions.
Subscribers gain access to a rich library of insights, reports, maps, webinars, podcasts, and fuels-related data sets.
Our reporting integrates both regulatory and market perspectives and features real-world fuel quality data based on original SGS Worldwide Fuel Survey data.
Learn more: About SGS | SGS Inspire
For enquiries, please contact us: sgs-inspire@sgs.com.
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