Managing a mixed fleet of electric vehicles and petrol cars: a guide for 2026
Mixed fleet management, Guide by Steve Clarke, Marketing Manager at Fleetmaxx Solutions
Hello, I am Steve Clarke. As a fleet manager in the United Kingdom, you are likely navigating one of the biggest shifts our industry has ever seen. The transition to electric vehicles is well underway, but for most businesses, the reality is not a sudden switch. Instead, it is a gradual process, leaving you to manage a mixed fleet of both electric vehicles (EVs) and traditional petrol or diesel cars. This guide is designed to help you simplify the complex logistics of running electric and traditional vehicles side by side, ensuring your business remains efficient, compliant, and cost-effective as we head into 2026.
Many managers I speak with share the same concern: how do you manage two different fuelling systems and maintenance schedules without doubling the workload? It is a valid question, but the answer is simpler than you might think. It is not about choosing between fuels; it is about unifying your data and partnerships.
Understanding the landscape of mixed fleet management in 2026
First, let us be clear on what we mean by a mixed fleet. It is simply a collection of vehicles that includes both traditional internal combustion engine (ICE). vehicles, like petrol and diesel vans, and electric vehicles. For the foreseeable future, this will be the standard model for most UK businesses. The transition phase is not just a trend; it is becoming a necessity, driven by regulations like the United Kingdom’s ZEV mandate. During this period, maintaining a professional and cost-conscious approach is vital. The most common pitfall we see is businesses using disconnected systems for their petrol and electric assets, which creates data silos and hidden costs.
The current state of United Kingdom fleet electrification
The government’s 2026 targets for zero-emission vehicle sales are putting real pressure on businesses to electrify. This, combined with fluctuating petrol prices, makes the case for EVs stronger each year. However, going fully electric overnight is not practical for every operation. A mixed fleet acts as a strategic bridge, allowing your business to adapt at a sustainable pace. It provides stability by letting you leverage the long-range capabilities of your petrol vehicles while reaping the lower running-cost benefits of EVs on suitable routes.
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Why fragmented management is costing your business money
When you receive separate invoices for fuel and charging, and use different systems to track maintenance, you create a huge administrative burden. These hidden costs add up quickly. Data silos, where information for your petrol cars is stored separately from your EV data, prevent you from getting a clear picture of your total cost of ownership (TCO). You cannot accurately compare cost-per-mile or identify which vehicles are truly the most efficient. In short, mixed fleet management is a unified operational strategy designed to bring all your data under one roof.
Mixed fleet management: Consolidating fuel and energy costs for better visibility
The single most effective step you can take is to adopt a unified payment solution for both petrol and electricity. This immediately breaks down the data silos. While you transition, your traditional vehicles still need to be run as cost-effectively as possible. Using business fuel cards continues to provide significant savings at the pump and simplifies administration. Simultaneously, electric vehicle charge cards give your drivers access to vast public charging networks. The real magic happens when both of these are managed through a single provider, resulting in one consolidated, HMRC-compliant invoice that dramatically reduces the time your accounts team spends on paperwork.
Bridging the gap with multi-fuel payment solutions
Imagine the time saved by swapping a pile of driver-submitted receipts for a single, itemised weekly invoice. That is the power of consolidation. Furthermore, using PIN-protected cards for both fuel and charging enhances security across your entire fleet, preventing misuse and unauthorised spending. With all transaction data in one place, you can finally track the cost-per-mile accurately for every vehicle type, allowing you to make informed decisions about which routes are best suited for EVs and which still require petrol or diesel power.
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Leveraging telematics for a single point of truth
Telematics, or GPS vehicle tracking, is the ultimate unifier for a mixed fleet. It provides real-time location and performance data, regardless of what powers the vehicle. This single point of truth allows you to monitor your entire operation from one dashboard. For your EV drivers, route optimisation tools can automatically find the nearest and most convenient charge points, eliminating range anxiety. For all drivers, monitoring behaviour such as speeding or harsh braking improves safety and boosts fuel or energy efficiency, cutting costs across the board.
Overcoming the practical hurdles of maintenance and compliance
It is no secret that EVs and ICE vehicles have very different maintenance needs. EVs have fewer moving parts, requiring less routine servicing, while petrol engines need regular oil changes and checks. A significant challenge for mixed fleets is managing the compliance of the remaining diesel vehicles, particularly concerning emissions. This is where AdBlue solutions play a critical role. Alongside maintenance, ensuring driver safety through daily walk-round checks is essential. Using a digital application can standardise this process for all vehicle types. Finally, you must consider the different breakdown and recovery needs for each vehicle type, as recovering an EV can be a more specialised task.
Managing fleet fluids and engine health
For your diesel vehicles, monitoring the AdBlue to diesel ratio is crucial for both compliance and optimal performance. But fleet fluids are not just about emissions. Using premium antifreeze and screenwash is vital for all your vehicles, electric or petrol, to ensure they operate safely during the cold UK winters. A simple way to manage costs here is to consider bulk fluid delivery. This can often save up to fifty per cent compared to paying forecourt prices, a significant saving that directly impacts your bottom line.
Ensuring compliance and safety across the board
Daily safety inspections are a legal requirement and a cornerstone of good fleet management. A digital app like CheckedSafe simplifies this process, providing a clear and consistent checklist for drivers of any vehicle type. This creates an auditable trail for your records. For businesses running vans or HGVs, regular compliance audits are a legal necessity in the United Kingdom. As regulations around road risk continue to evolve, engaging with a professional transport consultancy can help you navigate these changes and ensure your entire operation remains fully compliant.
Building a long-term strategy with a trusted fleet partner
The most efficient way to manage the complexities of a mixed fleet is to adopt a one-stop-shop approach. Working with a single, trusted partner who can handle your fuel, charging, telematics, and compliance needs saves you time and money. As a family-owned business, we understand the unique landscape for UK companies and pride ourselves on providing personal service with no hidden extra charges. When planning the next phase of your fleet’s electrification, seeking expert advice is crucial to building a robust strategy.
Planning your infrastructure for the future
A key part of your long-term plan will be charging infrastructure. Workplace and home charging solutions offer the most convenient and cost-effective way to keep your EVs ready for the road. You can use the data gathered from your current petrol fleet, such as daily mileage and routes, to strategically decide which vehicles are the best candidates for replacement next. A trusted partner can assist with more than just fuel; they can also help with services like vehicle leasing and commercial insurance, creating a truly comprehensive fleet solution.
The Fleetmaxx commitment to your business
Our commitment is simple: we are here to keep your vehicles on the road, for less. Our friendly advisers are on hand to tailor a solution that fits the specific size and needs of your business. Managing a mixed fleet is not a sign of indecision; it is a sign of a growing, forward-thinking company that is adapting smartly to the future. We are here to help you make that transition a success.
Frequently asked questions about mixed fleet management
How do I track fuel and charging costs in a single report?
The best way is to use a consolidated payment solution from a single provider. This combines all your petrol, diesel, and electricity transactions into one HMRC-compliant invoice, giving you a single, clear report for all your fleet’s energy costs.
Is it more expensive to maintain a mixed fleet than a traditional one?
Not necessarily. While you are managing two types of maintenance schedules, EVs typically have lower maintenance costs, which can offset the upkeep of your remaining petrol vehicles. The key to controlling costs is having a unified system to track expenses and avoid the administrative overhead of fragmented management.
What are the United kingdom tax benefits for businesses running electric vehicles in 2026?
In 2026, businesses can still benefit from favourable Benefit-in-Kind (BiK) tax rates for electric company cars, making them highly attractive for employees. Additionally, businesses may be able to claim capital allowances on the purchase of new electric vehicles, though it is always best to consult with a tax professional for the latest details.
Can I use the same fuel card for petrol and electric vehicle charging?
While a single physical card for both is not yet standard, you can manage both through a single account. Providers like Fleetmaxx Solutions offer fuel cards for your petrol fleet and EV charge cards for your electric one, but all the data and invoicing are consolidated into one simple management platform.
How does the 2026 ZEV mandate affect my current petrol vehicle purchases?
The ZEV mandate requires manufacturers to sell a certain percentage of zero-emission vehicles each year. For 2026, this target is 33% for new cars and 24% for new vans. This does not stop you from purchasing petrol vehicles, but it signals the clear direction of the market and may influence the future resale value and availability of ICE models.
What happens if an electric vehicle runs out of battery on a delivery route?
This is a common concern known as range anxiety. It can be managed effectively with telematics and route planning tools that direct drivers to nearby charging stations. For emergencies, it is important to have a breakdown and recovery service that is equipped to handle EVs, as they sometimes require specialist assistance.
