More Than 70% of Corporate Fleets Move Away from Fossil Fuels

Large corporate fleets stopped buying fossil-fuel vehicles in 2025

More than 70% of the world’s leading corporate fleets added no new petrol or diesel vehicles during 2025. This represents a significant shift in business transport strategy. According to the Climate Group’s EV100 Progress and Insights Report, published in August 2026, the transition to electric vehicles has moved beyond pilot schemes and early trials.

For UK businesses operating commercial fleets, the data signals a broader change in how companies manage transport costs and operational risk. Fleet electrification is no longer an emerging trend confined to sustainability leaders. Instead, it has become standard practice among major organisations seeking to reduce exposure to fuel price volatility and prepare for tighter emissions regulations.

The report describes a decisive move away from internal combustion engines. Companies are actively phasing out fossil-fuel vehicles rather than simply pausing new purchases. This distinction matters because it reflects long-term planning rather than temporary budget constraints. Consequently, businesses still relying on diesel and petrol fleets may face growing commercial disadvantages as the vehicle market, charging infrastructure, and supply chains align with electric transport.

Corporate fleets accelerated electrification through 2025

The Climate Group’s August 2026 report states that global companies are rapidly electrifying road transport. Electric vehicles are described as the new standard for corporate fleets. This language marks a shift in how fleet electrification is framed within business strategy. Previously, electric vehicles were often positioned as future technology requiring cautious adoption. Now, the evidence suggests they have become the default choice for major fleet operators.

The 70% figure represents organisations participating in the EV100 initiative, which brings together companies committed to transitioning their fleets to electric vehicles. However, the trend extends beyond this specific group. Fleet operators across sectors are responding to similar commercial pressures. Fuel costs remain unpredictable, with diesel and petrol prices subject to geopolitical disruption and market volatility. Electric vehicles offer more stable running costs, particularly when charged using fixed-rate electricity contracts or on-site renewable generation.

In addition, regulatory timelines are tightening. The UK government has set deadlines for phasing out new petrol and diesel vehicles, and public sector procurement now favours suppliers demonstrating carbon reduction. Companies operating fleets therefore face a dual incentive. They must manage immediate cost pressures while also preparing for compliance requirements and customer expectations around sustainability.

Moreover, fleet procurement decisions carry significant market influence. Large organisations often purchase vehicles in bulk, which affects manufacturer production priorities and dealer stock levels. When major fleets commit to electric vehicles, they drive investment in charging infrastructure and service networks. This creates a feedback loop that makes electrification easier for smaller businesses and individual operators.

Fuel price volatility drove strategic shift to electric fleets

The decision to stop purchasing fossil-fuel vehicles is rooted in commercial risk management. Fuel price volatility has long been a major operational challenge for businesses running vehicle fleets. Diesel and petrol costs can fluctuate significantly over short periods, making budgeting difficult and eroding profit margins. This uncertainty affects logistics companies, service providers, sales teams, and any organisation dependent on road transport.

Electric vehicles reduce this exposure. Electricity prices are generally more stable than fossil fuels, and businesses can further control costs through smart charging, time-of-use tariffs, and on-site solar generation. For companies managing hundreds or thousands of vehicles, these savings compound quickly. Maintenance costs also tend to be lower for electric vehicles because they have fewer moving parts and do not require oil changes or exhaust system repairs.

Furthermore, resale values for diesel and petrol vehicles are declining as the market anticipates regulatory changes and shifting consumer preferences. Fleet managers must consider the total cost of ownership, including depreciation. Electric vehicles are increasingly seen as a safer investment because they align with policy direction and market expectations. In contrast, purchasing new fossil-fuel vehicles now carries the risk of accelerated obsolescence.

The report highlights that fleets are phasing out rather than pausing fossil-fuel purchases. This distinction is important. Pausing suggests a temporary measure that might be reversed if circumstances change. Phasing out indicates a deliberate, long-term strategy. Companies are retiring diesel and petrol vehicles as they reach the end of their operational life and replacing them exclusively with electric models. This approach manages transition risk while avoiding the cost and disruption of premature fleet replacement.

For UK SMEs, this trend has practical implications. Businesses supplying large corporations may face questions about their own fleet emissions. Tender processes increasingly include sustainability criteria, and supply chain electrification is becoming a factor in procurement decisions. Companies that delay electrification may find themselves at a competitive disadvantage when bidding for contracts or seeking partnerships with organisations committed to carbon reduction.

What the corporate fleet data tells us about market direction

Several key findings emerge from the Climate Group’s report. Understanding these points helps businesses assess their own fleet strategy and identify potential risks or opportunities. The following facts summarise the most significant developments:

• More than 70% of leading corporate fleets added no new petrol or diesel vehicles during 2025, signalling a definitive shift in purchasing behaviour.
• Electric vehicles are now described as the new standard for corporate fleets, reflecting widespread adoption rather than niche experimentation.
• Companies are phasing out fossil-fuel vehicles systematically, not simply reducing purchase volumes, which indicates long-term strategic commitment.
• Fuel price volatility remains a primary driver for electrification, with businesses seeking to reduce exposure to unpredictable diesel and petrol costs.
• Bulk procurement by large fleets influences charging infrastructure development, vehicle supply chains, and the pace of broader market electrification.
• The transition extends beyond sustainability goals to encompass operational efficiency, cost control, and regulatory compliance.

Implications for UK businesses still operating fossil-fuel fleets

The pace of fleet electrification among leading companies creates both pressure and opportunity for UK SMEs. Businesses that have not yet started transitioning their fleets should consider several factors. First, the vehicle market is changing rapidly. Manufacturers are shifting production capacity toward electric models, and the availability of new diesel and petrol vehicles will decline over time. This affects replacement cycles and parts availability.

Second, operating costs for fossil-fuel vehicles are likely to increase relative to electric alternatives. As electric vehicle adoption grows, economies of scale will reduce battery costs and improve charging infrastructure. Meanwhile, diesel and petrol may face higher taxation and regulatory costs as governments pursue carbon reduction targets. Businesses locked into fossil-fuel fleets could face escalating expenses without a clear exit strategy.

Third, supply chain expectations are evolving. Companies committed to net-zero targets are examining their entire value chain, including logistics and service providers. If your business operates a delivery fleet or provides on-site services, customers may start asking about your vehicle emissions. This is particularly relevant for public sector contracts, where carbon reduction is often a mandatory requirement. Demonstrating progress on fleet electrification can become a competitive advantage in procurement processes.

Additionally, access to finance may be affected. Lenders and investors increasingly assess climate-related risks when evaluating businesses. A fleet heavily dependent on fossil fuels could be seen as a transition risk, potentially affecting loan terms or investment decisions. Conversely, a clear electrification plan can strengthen your business case by demonstrating forward planning and alignment with policy direction.

However, electrification also presents practical challenges. Charging infrastructure requires upfront investment, particularly for businesses without suitable depot facilities. Vehicle availability can be an issue for certain fleet types, especially larger vans and specialist vehicles. Range limitations remain a consideration for businesses covering long distances or operating in remote areas. These factors need careful evaluation alongside the financial and strategic benefits.

For many SMEs, a phased transition makes sense. This involves replacing vehicles with electric models as they reach the end of their operational life, starting with routes and applications where electric vehicles perform well. Over time, this approach builds operational experience, spreads capital costs, and allows charging infrastructure to be developed incrementally. Our net-zero program for carbon reporting compliance can help businesses plan this transition systematically.

Government policy and market signals continue to align

The corporate fleet data reflects broader policy and market trends. UK government regulations are tightening around vehicle emissions, with deadlines for ending the sale of new petrol and diesel vehicles already in place. These policies are designed to accelerate the transition to electric transport across all vehicle categories. However, the pace of change among corporate fleets suggests that commercial drivers are often ahead of regulatory requirements.

This matters because it indicates that electrification is not solely a compliance issue. Businesses are making the shift for financial and operational reasons, not just to meet legal obligations. Consequently, companies waiting for regulatory deadlines before acting may find themselves behind the market. Competitors will have already developed operational expertise, secured charging infrastructure, and locked in favourable vehicle supply agreements.

In addition, public sector procurement is increasingly favouring suppliers with strong sustainability credentials. The government’s Procurement Policy Note 06/21 requires suppliers bidding for major contracts to demonstrate carbon reduction plans. For businesses with significant vehicle fleets, this means having a clear electrification strategy and evidence of progress. Companies that have already transitioned away from fossil fuels will have a tangible advantage in these processes. More information on meeting these requirements is available through our sustainable procurement support for public sector suppliers.

Furthermore, customer expectations are shifting. Corporate buyers are under pressure to reduce Scope 3 emissions, which include the carbon footprint of their suppliers. This means businesses providing services or deliveries may face questions about their vehicle emissions even if they are not directly subject to reporting requirements. Being able to demonstrate fleet electrification can therefore become a commercial differentiator.

Further information on fleet electrification and vehicle policy

Businesses considering fleet electrification should consult authoritative sources for detailed guidance and policy updates. The UK government provides comprehensive information on vehicle regulations, grants, and charging infrastructure through the Department for Transport. Their guidance covers everything from available financial support to technical requirements for workplace charging points.

The Climate Group’s EV100 initiative offers case studies and practical insights from companies that have completed or are progressing through fleet transitions. These resources can help businesses understand common challenges and effective strategies. Additionally, the Energy Saving Trust provides independent advice on low-carbon transport, including vehicle selection and total cost of ownership calculations.

For businesses operating in specific sectors, trade bodies and industry groups often publish sector-specific guidance on fleet electrification. These resources address practical considerations such as vehicle suitability for particular applications, charging infrastructure design, and managing the transition without disrupting operations. Staying informed through these channels helps businesses make decisions based on current policy, technology availability, and commercial best practice.