How the Sustainable Mobility Law is changing the transport sector

Law 9/2025 of 3 December on Sustainable Mobility has gone from being a draft bill to becoming, as of 2026, a national law in force (it entered into force on 5 December 2025). Its objective is to drive a more efficient, digital and low-emission transport model, and it directly affects one of the most emitting sectors: transport and logistics.

For companies in the sector, the law combines new obligations with incentives and, above all, accelerates a transition the market was already demanding: cleaner fleets, reliable mobility data and a measured and reduced carbon footprint.

What changes for the transport sector as of 2026?

The Sustainable Mobility Law positions transport as a citizen's right and a lever of climate policy. For companies, the most relevant changes are three: the obligation to plan the mobility of workplaces, the regulatory push towards a sustainable transport model, and the creation of funding and data instruments (such as the State Fund for Contribution to Sustainable Mobility and the Integrated Mobility Data Space).

The most tangible obligation is the Workplace Sustainable Mobility Plan (WSMP) for sites with more than 200 employees or more than 100 per shift. The deadline has been brought forward: Royal Decree-law 7/2026 of 20 March cut the time to implement it from 24 to 12 months, so the companies covered must have it ready before 5 December 2026. We analyse these obligations in detail in our guide to the Sustainable Mobility Law for companies.

Advantages of sustainable mobility

Adopting sustainable mobility is not just a legal obligation, but an opportunity to improve costs and competitiveness. Among the most notable advantages:

• Reduced greenhouse gas emissions: cutting fossil-fuel use in transport is key to the climate goals of the company and the country.
• Better air quality: fewer polluting emissions in cities have a direct impact on public health.
• Less noise: electric and active mobility reduce noise pollution in the urban environment.
• Economic efficiency: in the medium term, optimising routes and renewing the fleet generates fuel and maintenance savings.

Implications for transport and logistics companies

The Sustainable Mobility Law has direct repercussions for transport and logistics companies. These companies face the challenge of adapting their fleets and operations, which can mean a significant initial investment. In return, the transition opens up opportunities:

• Improved brand image: companies that commit to sustainability are perceived better by clients and investors.
• Access to new business lines: demand for low-emission logistics is growing among shippers subject to the CSRD and supply-chain targets.
• Lower operating costs: optimising routes, using more efficient vehicles and reducing energy consumption cuts operating expenses.

Challenges for the transport sector under the law

The transition to sustainable mobility is not without challenges. The sector must tackle significant hurdles to reduce its fleet emissions and adapt to the new requirements.

Fleet renewal

Fleet renewal is one of the main challenges. Replacing combustion vehicles with electric or alternative-energy ones requires investment. To ease the transition, public authorities maintain grants and incentives, and the law itself creates funding instruments tied to plans with measurable objectives.

Infrastructure adaptation

Rolling out a charging network for electric vehicles is essential. Charging points need to be installed in strategic locations: logistics centres, fleet car parks, service stations and high-capacity roads.

Mobility data and reporting

The law not only requires reducing emissions, but documenting them. WSMPs must be communicated to the regional authority within three months to be integrated into the Integrated Mobility Data Space, and the results feed the company's ESG reporting. Without reliable data, there is no compliance and no real improvement.

How to measure the carbon footprint in transport

The first step to reducing the environmental impact of transport is knowing the carbon footprint. Most of a logistics company's emissions are concentrated in Scope 3 of the GHG Protocol, in categories such as transport and distribution. That is why it is best to measure following recognised standards such as the GHG Protocol and the ISO 14064 standard.

Manglai's role in the transport transition

At Manglai we offer carbon footprint management software for companies seeking efficient and accurate management of their emissions. The tool lets you:

• Calculate carbon emissions across all three scopes (1, 2 and 3), in line with the GHG Protocol and ISO 14064.
• Monitor emissions through customisable interactive dashboards.
• Identify areas for improvement and develop tailored emission reduction plans.
• Automate report generation to meet legal and sustainability requirements.

For transport and logistics, measuring the footprint well is the starting point for complying with the Sustainable Mobility Law and designing a sector decarbonisation strategy.

Frequently asked questions

Is the Sustainable Mobility Law already in force?

Yes. It was approved as Law 9/2025 of 3 December and entered into force on 5 December 2025. As of 2026 it is fully applicable.

Which transport companies must draw up a mobility plan?

Those with workplaces of more than 200 employees or more than 100 per shift. The deadline, after Royal Decree-law 7/2026, falls on 5 December 2026.

Where to start to comply with the law?

By measuring the carbon footprint of the fleet and operations, identifying the most relevant Scope 3 categories and designing, on top of that data, the mobility and emission reduction plan.