Total cost of ownership (TCO) for EV fleet operators explained

Total cost of ownership (TCO) is the total cost of buying, operating, maintaining and disposing of an EV over its entire lifecycle. In addition to purchase price, the factors behind TCO include:

• Energy costs 
• Maintenance and servicing
• Depreciation and residual value
• Insurance
• Taxes and incentives
• Charging technology

Together, these help EV fleet operators balance a higher upfront price by lowering operating costs over the vehicle lifecycle. 

EV fleets offer long-term advantages, with some estimates suggesting potential savings of more than £4,000 per car in a five-year period, depending on mileage, charging strategy and vehicle use. Understanding how and why helps organisations prepare for the true long-term cost of operating an electric fleet.

In October 2025, the average wholesale price of an EV exceeded £13,200, compared to the same-month equivalent cost of £7,838 for ICE vehicles. Paired with the initial cost of installing charging infrastructure, it can make electrification appear costly for fleets operators.

However, upfront costs are only one part of a broader calculation, and long-term savings are possible. Assessing TCO is therefore a pragmatic step for any business as the considering EV fleet operations.

EVs can be cheaper to power on a per-mile basis than petrol or diesel vehicles, particularly where operators can control charging through depot, workplace or off-peak energy tariffs. 

For fleet operators, good charging habits are integral to maximising long-term value in every EV and protecting battery health and degradation. Like batteries used in everyday technology, EV batteries naturally lose capacity over time, yet real world data shows the impact is gradual. 

Geotab’s 2026 battery health analysis found an average degradation rate of 2.3% per year, although this can vary depending on vehicle type, charging behaviour and operating conditions. 

For EV fleet managers, this means vehicle selection, route planning and charging strategy all play a role in protecting battery health and managing degradation, while also supporting efficient power demands at depots and workplaces. 

Maintenance and servicing are also key contributors to EV cost of ownership for fleet managers.  

Sourcing specialised components and the correct diagnosis is currently more complex than with ICE vehicles, which increases costs. Though some parts are pricier, EVs typically contain fewer consumable parts overall, meaning servicing demands are less frequent, which helps to balance the expense.  

Because battery health can influence residual values, protecting battery performance may also help reduce TCO as vehicles approach the end of their fleet cycle.

EV depreciation is one of the most important cost factors in fleet operations, as the difference between acquisition cost and resale value can have a significant impact on whole-life costs. 

While residual value uncertainty has created challenges for some operators, the used EV market has shown signs of stabilisation as improving technology and gradually strengthening buyer confidence help support more balanced pricing. 

Several factors can influence EV resale value, including: 

• Mileage
• Battery health 
• Service history
• Warranty
• Charging behaviour 

Fleet operators should therefore prioritise proactive vehicle management by keeping clear service records, monitoring battery performance and maintaining vehicles to a high standard. These habits can help protect residual values when assets reach the end of their fleet cycle.  

When calculating TCO, maximising resale value and thoroughly preparing vehicles for sale should be seen as core responsibilities within EV fleet management. A clear disposal strategy can help reduce depreciation risk. 

Data shows that on average, insuring an EV currently costs at least 17% more than a petrol car. Despite these premiums, there are ways to make policies more cost-effective for EV fleet operators.  

Telematics and data insights may be used strategically to improve insurance affordability. This reflects a broader industry trend, with 52% of UK fleets using connected technologies across some or all of their vehicles.

In addition to vehicle status data provided by EV Battery Management Systems (BMS) and native software, telematics devices help to monitor real-time performance by recording vital parameters like:

• Driver behaviour
• Speed and location
• Vehicle diagnostics
• Battery performance
• Journey time 
• Cargo weight and temperature

By providing insurers with richer telematics data, EV fleet managers can evidence lower-risk driving behaviours. This may help to support favourable underwriting decisions and improve the opportunity for competitive fleet insurance quotes at renewal.

Tax and regulatory changes are another important part of EV fleet total cost of ownership. Operators can benefit from emissions-based savings today, but businesses must still prepare for new and evolving tax requirements.

From April 2028, electric Vehicle Excise Duty will introduce a mileage-based charge for EVs and plug-in hybrids, alongside existing VED. Fully electric cars are due to pay 3p per mile, while plug-in hybrids are expected to be charged at 1.5p per mile. Vans, buses, coaches, motorcycles and HGVs are not expected to be in scope when eVED is introduced, although operators should continue to monitor future policy changes. 

While this is estimated to be around half the average fuel duty paid per mile by petrol or diesel drivers, mileage forecasting for fleets is critical for accurate TCO understanding. 

Depending on the vehicles and asset type, upfront costs of switching to EVs are supported through tax relief and grant support. 

Qualifying new zero-emission cars can be eligible for 100% first-year capital allowances, while businesses installing workplace chargers may be able to access support through the Workplace Charging Scheme. Eligibility for both depends on the vehicle, asset type, installation date and how the asset is used.

Choosing EV fleets can also help reduce exposure to emissions-based charges and clean air zone requirements. For businesses operating in urban areas, this can support commercial competitiveness and sustainability objectives.

Developments in EV charging technology are helping to reduce TCO. Smart charging software gives fleet managers greater control over how and when vehicles are charged, which helps to optimise energy use and minimise downtime.

Here’s how smart charging works:

• Software automates charging schedules according to operational needs
• Charging sessions are staggered to avoid peak demand when vehicles return to their base
• Vehicles are charged during lower-tariff periods, helping to reduce electricity costs

For larger fleets, the benefits can be significant: optimised energy use also protects battery health and fosters efficient infrastructure use. In some cases, EV fleets can save up to 30% on charging costs with these technologies. 

End-of-life planning is another key consideration for EV TCO.
Batteries are usually retired after their capacity drops below the optimum performance. But alongside recycling, battery repair and remanufacturing can help extend value, recover materials and reduce waste. The most appropriate route will depend on battery condition, chemistry and commercial viability.

EV fleet operations can offer long-term cost advantages, but the business case depends on accurate forecasting, informed vehicle selection and a clear understanding of how each vehicle will be used. 

For EV fleet operators, TCO should account for more than purchase price. Energy costs, charging strategy, maintenance, insurance, depreciation, tax changes and disposal planning all influence the true cost of operating an electric fleet. 

As the EV market matures, businesses that that a data-led approach will be better placed to manage risk, protect residual values and identify where electrification can deliver practical and financial value. 

Stay up to date with the latest EV insights, market data and industry reports through the Cox Automotive EV Hub.