Regulation (EU) 2025/258 mandates changes for heavy and medium-duty vehicles (trucks and buses) to reduce emissions and accelerate the shift to cleaner road transport technologies. Going forward, manufacturers and national authorities must implement a stricter emissions verification system that accurately measures fuel consumption and energy efficiency.
The regulation also broadens its scope to include hydrogen-powered vehicles and other innovative technologies, reinforcing the EU’s dedication to sustainable mobility. This article details the changes introduced by Regulation (EU) 2025/258 and its impact on your business. By understanding these new European requirements, manufacturers, transport operators, and those working in related automotive fields can proactively prepare and align with the EU’s decarbonization goals.
Context and background of Regulation (EU) 2025/258
Over the past ten years, the European Union has been working on a strategy to cut down greenhouse gas emissions in the transport sector. As part of this initiative, Regulation (EU) 2017/2400 set up a standardized method for calculating CO₂ emissions and fuel consumption for heavy-duty vehicles. However, with new technologies coming into play, it became clear that the regulatory framework needed a refresh.
As a result, the European Commission, using Article 290 of the Treaty on the Functioning of the European Union (TFEU), has rolled out Regulation (EU) 2025/258 to bring these standards up to date with market changes. This update now allows for emissions calculations to factor in vehicles that run on hydrogen and other alternative energy sources. Additionally, the regulation makes changes to Regulation (EU) No 582/2011 to streamline the process for extending EU type-approvals. Ultimately, this new regulation aligns with the goals of the European Green Deal and the “Fit for 55″ package.
Main objectives of Regulation (EU) 2025/258
Regulation (EU) 2025/258 is shaking up the road transport rules in a big way. Let’s break down its main goals:
Harmonize certification procedures across the EU
The Regulation aims to create a cohesive framework so that a single vehicle certification is recognized in every EU country. This means trucks and buses won’t have to jump through different hoops depending on where they are. It achieves this by tweaking Regulation (EU) 2017/2400 and Regulation (EU) No 582/2011, ensuring that all Member States apply the same standards.
Incorporate new propulsion technologies, especially Hydrogen
For the first time, this Regulation officially brings hydrogen-powered vehicles into the fold and sets guidelines for measuring their energy use and emissions accurately. This opens the door for manufacturers to certify hydrogen vehicles in the EU, something that wasn’t possible before. By doing this, the regulation speeds up the shift towards zero- or very low-emission technologies in road transport.
Ensure more precise and representative measurements
The Regulation updates testing methods to better match the values that manufacturers declare with what happens in the real world. It allows for the use of CFD (Computational fluid dynamics) to study vehicle aerodynamics. Plus, it enhances procedures to make sure that what gets certified truly reflects what’s being produced.
Certification of new components
The Regulation rolls out a certification system that focuses on specific components, like efficient wheel ends, to cut down on friction losses and, in turn, reduce the vehicle’s energy consumption. In the past, these components weren’t assessed and didn’t impact the vehicle’s official emission figures. With the new rules, if a component boosts energy efficiency, manufacturers can showcase that improvement in the certified CO₂ and consumption values, encouraging innovation in technology.
Administrative control and legal certainty
When it comes to administrative control and ensuring legal certainty, the Regulation places several obligations on manufacturers. If they don’t comply with the certification requirements, their certificates of conformity become void, which means the vehicle can’t be registered or sold. This system guarantees that only vehicles with trustworthy emission values make it to the market.
Affected parties | Companies, suppliers, and authorities
Regulation (EU) 2025/258 lays down requirements for everyone involved in type-approval within the European Union. For vehicle manufacturers—think trucks, buses, and coaches—they’re now required to certify their CO₂ emissions and energy consumption figures. Component suppliers, whose products have a direct or indirect impact on a vehicle’s energy use, are also in the mix. Unlike before, they now have obligations too, meaning they must provide component certificates and maintain a high level of technical traceability in their documentation.
⚠️ A word of caution: if a supplier sends a component without a valid certification, the manufacturer (or whoever is responsible for selling it) won’t receive a Certificate of Conformity for the vehicle. This means they can’t sell it in the EU.
The regulation also extends to national type-approval authorities and technical services, which are tasked with ensuring that the information provided by manufacturers and suppliers meets the required standards. If it doesn’t, they have the power to suspend type-approval or block vehicle registration. The regulation promotes information sharing among Member States, preventing manufacturers from seeking approval in one country and then trying to sell it in another without following the rules.
Lastly, the effects of this regulation also trickle down to consumers and logistics companies, leading to more efficient vehicles and clearer information on emissions. The goal is to provide consumers with reliable information when buying a vehicle, helping to fight against greenwashing (as outlined in Directive (EU) 2024/825). In short, Regulation (EU) 2025/258 establishes a compliance chain that impacts all players in the market: manufacturers, suppliers, authorities, and end-users.
Practical impact and application of Regulation (EU) 2025/258
Regulation (EU) 2025/258 directly influences companies, consumer rights, and public administrations, as outlined below.
Impact on European Union (EU) businesses
The main players affected by the implementation of Regulation (EU) 2025/258 are companies like vehicle manufacturers, component suppliers, and logistics firms. For starters, vehicle manufacturers need to revamp their type-approval processes to incorporate new technical parameters such as hydrogen, dynamic loading, and the mandatory certification of components (like efficient wheel ends). This means they’ll have to invest in engineering, testing, and updating their documentation. When using CFD simulation, manufacturers must justify their methods and pass verification checks during production. If the actual values don’t match what was declared, the Certificate of Conformity becomes invalid, and the vehicle won’t be able to get registered.
💡 Practical example: An electric truck manufacturer won’t be able to sell their units in another Member State without providing the full technical sheet and the necessary certificates as per the new regulation.
Additionally, suppliers are now part of the type-approval process. They need to certify their components if they want manufacturers to use them to enhance official emission values, effectively making them obligated players within the regulatory landscape.
Consequences for consumers
While the Regulation mainly targets the industry, it also impacts consumers and transport or leasing companies. The stated values for fuel consumption and emissions will become more trustworthy, allowing for easier comparisons across different manufacturers, and can be verified through technical documentation.
This shift means more transparency when choosing a vehicle. Users will be able to compare various models and make informed economic choices based on actual data, as there should no longer be significant gaps between the “declared” consumption and the “real” consumption experienced on the road.
Practical example: A transport company looking to buy a fleet of hydrogen trucks will now have access to accurate consumption values, as these will need to be validated beforehand by the manufacturer or supplier.
Entry into force and transitional provisions
Starting January 1, 2026, compliance with Regulation (EU) 2025/258 will be a must. However, there are some transitional provisions in place that give manufacturers and suppliers the chance to apply for certifications ahead of that deadline, particularly when it comes to component approval. This transitional period is a great opportunity for companies to get their certifications in order, adapt to the new regulations, and ensure they’re ready to roll out vehicles in 2026, especially with exciting new technologies like hydrogen vehicles on the horizon.
💡 Helpful tip: There’s an exception in the Regulation for companies: manufacturers and suppliers can start applying for certifications under the new rules that kick in on March 12, 2025.
During the transition period from 2025 to 2026, Member States can’t deny approvals based on the new Regulation (EU) 2025/258. This means that different regulations can coexist legally for a while. It’s important to remember that after January 1, 2026, no procedures or values from the old regulation will be accepted, and only approvals that meet the new Regulation (EU) 2025/258 will be valid. If a company tries to use old certificates, it will be seen as non-compliance, and their Certificates of Conformity could be rendered invalid.
Penalties and consequences for not following Regulation (EU) 2025/258
While this Regulation doesn’t impose direct financial penalties, it does set up administrative consequences to ensure that everyone sticks to the rules, as outlined below:
Automatic loss of the certificate of conformity
The biggest penalty hits manufacturers who don’t follow the certification procedures, technical documentation, or verification of declared values. If they fall short, the vehicle’s Certificate of Conformity becomes invalid, meaning it can’t be registered or sold in any Member State.
Practical example: Imagine a manufacturer claims their truck has great aerodynamics based on simulations but can’t back that up with actual testing. In that case, the certificate could be voided, and they wouldn’t be able to sell the vehicle.
Prohibition of registration, sale, or entry into service within the European Union
Additionally, the Regulation gives Member States the power to block the registration, marketing, or entry into service of a vehicle if they find non-compliance. If one State makes this call, it automatically applies to all EU countries, which poses a significant commercial risk.
💡 Practical example: If a manufacturer sends out a truck with uncertified parts, and the type-approval authority in one Member State rejects the documentation, all other States must honor that rejection. New version 2:
The supplier’s responsibility for components or parts
The new Regulation is shaking things up in the supply chain. If a component has a direct impact on the fuel consumption or emissions of a heavy-duty vehicle, it needs to be certified on its own. If the supplier skips this certification, the manufacturer can’t use that component to enhance the vehicle’s efficiency or consumption figures, which could even lead to the vehicle being banned from sale. This means that manufacturers and suppliers will have to go back to the drawing board and renegotiate contracts to include specific clauses about certification, performance values, and traceability systems.
Practical example: Imagine a supplier has parts that claim to cut vehicle consumption by 3%. Without that certification, that 3% doesn’t count for the EU, meaning the manufacturer can’t advertise it and ends up losing ground to competitors who do have certified components.
Administrative cooperation among member states
Regulation (UE) 2025/258 introduces a new concept of “administrative cooperation” among the type-approval authorities across all Member States. This means that if one authority finds a compliance issue, it has to notify all other EU countries. Similarly, if one State cancels a certification, it becomes invalid throughout the entire EU. So, no manufacturer can get approval in one country and then sell in another if there’s a compliance issue.
This change comes from the fact that, in the past, some manufacturers would seek approval in countries with more lenient processes. Now, all authorities are on the same page regarding compliance issues. As a result, companies need to reassess their internal procedures to align with Regulation (UE) 2025/258, along with their supply chain, certification systems, and technical documentation.
How to comply with Regulation (EU) 2025/258 | Checklist for businesses
Here’s a straightforward list of actions you can take:
Identify components that need certification
Start by figuring out if the components that impact consumption or emissions need their own certification. If a component plays a role in the values used for emission calculations, it’s likely that it will need specific certification. You might find yourself asking: Does my component need certification? If the answer is “yes,” make sure to gather all the necessary documentation from your supplier.
Ensure data traceability
The Regulation mandates that all information used in the type-approval process must be traceable. This means you’ll need to prepare a dossier that allows the authority to verify how results, component data, test conditions, simulations, and production were obtained.
Do I have all the technical documentation needed to back up the values I’ve declared? If the answer is “no,” your company could face the risk of losing the vehicle’s type-approval.
Validate simulations before using them in certification and production
For the first time, the Regulation allows the use of aerodynamic simulations instead of physical testing, but only if the results are genuine—”estimated” simulations won’t cut it. So, manufacturers must ensure that the values align with approved tests or models.
Take action now to secure vehicle approval in the European Union
Regulation (EU) 2025/258 has a direct impact on how companies can manufacture, certify, and market vehicles and their components within the European market. To comply with this new regulation, businesses need to review their internal processes, adapt accordingly, and stay ahead of the new requirements for vehicle or parts type-approval.
Companies that move quickly will find themselves in a strong position compared to their competitors, as they’ll be able to certify their products sooner, establish their presence in the EU market, and minimize both commercial and legal risks. If you’re involved in manufacturing or purchasing heavy-duty vehicles or components, it’s time to act. Our team of experts in European Union law and Regulatory law is here to help you assess your situation and develop a strategy that aligns with Regulation (EU) 2025/258, including CO₂ emissions determination and type-approvals.
Contact us at info@arthurmarin.com or call +32 465 345 345 for a compliance audit of the new Regulation (EU) 2025/258, and we’ll provide you with a personalized checklist tailored for your company.
📍Anticipating is not optional. It is the difference between positioning yourself in the European market or being left out.
Frequently Asked Questions (FAQ) on Regulation (EU) 2025/258
What happens if a component isn’t certified under Regulation (EU) 2025/258?
If a component that impacts energy consumption or emissions isn’t certified, the manufacturer can’t use it for vehicle type-approval, meaning the truck won’t be allowed on the market in any EU Member State.
Can I register a vehicle based on CFD without physical verification?
Unfortunately, no. While the Regulation allows CFD simulations, it mandates that these must be validated through verification and data traceability. Without that verification, the Certificate of Conformity could be automatically deemed invalid.
From what date is compliance with Regulation (EU) 2025/258 mandatory?
Compliance will be required starting January 1, 2026, except for the transitional provisions.
What happens if the necessary technical documentation isn’t provided?
The type-approval authority has the power to block the vehicle’s registration, deny certification, or even annul any type-approval that has already been granted.
Does Regulation (EU) 2025/258 replace previous standards?
Not entirely. It amends Regulation (EU) 2017/2400 and certain technical annexes, updating procedures to incorporate new technologies like hydrogen and dynamic loading.
Who needs to comply with the Regulation? Is it just manufacturers?
Not at all. Component suppliers, heavy-duty vehicle manufacturers, and national type-approval authorities are also required to comply.
What penalties does the Regulation impose if a company fails to comply?
The main penalty is losing the Certificate of Conformity, which means no registration, no sales, and no entry into service within the EU. Essentially, without compliance, the vehicle can’t be sold in the European market.
Can a Member State block commercialization only within its own territory?
No, it can’t. If an authority finds non-compliance and cancels the type-approval, that block automatically applies across the entire European Union due to mandatory administrative cooperation.
What new obligations do component suppliers have?
They must ensure that components included in the calculation of emissions or consumption are certified and documented, and provide traceability.
Is it mandatory to review supply contracts because of this Regulation?
Yes. If a supplier delivers uncertified components, the manufacturer may lose vehicle type-approval. Therefore, it is advisable to include liability clauses in contracts (contractual compliance).
