Emissions Legislation Database
EMLEG database
Understanding and keeping up with changing global vehicle and engine emissions standards and regulations is a challenge for businesses. A subscription to Ricardo’s EMLEG database makes it simple by delivering expert curated information and support on a range of emissions legislation topics.
The comprehensive, global database contains clear summaries of the latest emissions legislation, technical information and CO2 emissions standards to help individuals and businesses keep up to date with the latest regulations.
Request more information, including pricing options, and book a demo with one of our experts to discover how EMLEG can simplify emissions legislation for you and your business.
“There are other resources available on the internet, but EMLEG really stands out because of the sheer relevant commentary added to each of the regulatory legislation, and it is updated regularly. It makes a real difference to read EMLEG before diving into the legislation, which saves time”.” Leading OEM Senior Manager
Benefits of an EMLEG subscription
With EMLEG you can access easy-to-read summaries written by experts and translated into English along with succinct reviews to help you interpret the regulations.
Our quality-checked data is fully searchable and clearly categorised so you can get the information you need with ease. The summaries and data in EMLEG cover both draft and final regulations, with links to official legislation.
EMLEG is built for intuitive use across a range of devices and platforms putting the information you need at your fingertips.
EMLEG covers emissions legislation for passenger cars, light commercial vehicles, heavy-duty vehicles, motorcycles, rail, marine, power generation, agricultural and other non-road applications.
As a subscriber, you’ll have access to specific data, including requirements for certification and in-service testing, emissions limits, evaporative emissions requirements, on-road testing, CO2 emissions standards and electrification requirements.
EMLEG covers emissions standards for the EU, US, California, India, China, Japan, the UK, Brazil, Canada, Australia and many other countries.
Keep up to date with all the latest developments and information on the phase-in of new regulations. These include Euro 7 emissions standards, update to post 2025 CO2 emissions targets worldwide, US EPA (Environmental Protection Agency) and CARB (California Air Resources Board) current and upcoming emissions requirements, including the development of Tier 5 non-road emissions standards, development of new regulations in India and more.
Your subscription to EMLEG includes access to the full updated database whenever you need it but also includes regular email alerts, highlighting new content.
Ricardo specialists continuously update and quality-check EMLEG so you can have full confidence in the data and information.
EMLEG is designed with researchers and technical leads at OEMs and tier 1 suppliers in mind giving you easy access to the information you need. This includes tables of emissions limits, durability and real driving emissions requirements. You’ll also see explanations of test procedures and find links to original source documents.
Why emissions legislation matters
Air pollution from road vehicles remains a major public health and environmental challenge. The European Environment Agency estimates transport contributes around a quarter of the EU’s CO₂ emissions, with 70% from road transport alone.
Since the first Euro 1 standards in 1992, regulations have steadily tightened. With Euro 7 due in late 2026, the automotive sector faces its most significant update in over a decade — covering not only petrol, diesel, and hybrid vehicles, but also electric vehicles for the first time.
Euro 7 will bring new requirements, including:
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Limits on non-exhaust emissions such as tyre and brake particles
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Extended compliance periods — up to 10 years or 124,000 miles for cars
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EV-specific rules on battery durability and performance
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On-board monitoring systems (OBM) for continuous emissions tracking
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Broader, more representative test methodologies
As Europe leads, other regions will follow — creating a ripple effect for international OEMs and suppliers.
What is EMLEG?
EMLEG is Ricardo’s comprehensive online emissions legislation database, designed to help businesses track, understand, and respond to regulatory changes worldwide.
With EMLEG, you gain:
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Global coverage – Summaries of emissions regulations across all jurisdictions and vehicle types
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Regular updates – A monthly subscriber newsletter detailing all major changes and emerging proposals
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Expert support – Direct access to Ricardo specialists to answer specific queries
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Practical insights – Clear, concise summaries to support product planning and compliance strategies