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To compare petrol, hybrid and electric SUVs fairly, compare similar models over the same ownership period and use your own mileage, journey mix, energy prices and charging access. There is no universally cheapest option: the result can change by model and by whether you buy, lease or finance it. Official figures give you a consistent starting point, but your actual costs and range depend on how and where you drive.
This guide is UK-focused. It shows what to compare, how to build a whole-life cost estimate, and how to judge whether each type of SUV fits your routine.
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What should you compare before choosing a drivetrain?
Start with the exact vehicles, not broad assumptions about petrol, hybrids or EVs. Compare SUVs of a similar size and equipment level, then use the same annual mileage, ownership period and payment basis for each. A small, lighter SUV and a larger, heavier one are not a fair drivetrain comparison just because both have the same badge or fuel type.
Before you calculate, write down:
- Which versions: exact model, trim, battery size where relevant, and whether the hybrid is mild, full (non-plug-in) or plug-in.
- How you will pay: cash purchase, finance or lease. For finance and leasing, include the deposit, term, mileage limit, fees and any final payment that applies.
- How long you expect to keep it: use one common time horizon, such as the planned lease term or expected years of ownership.
- How far and where you drive: annual mileage and the approximate split between local journeys, commuting and longer trips.
- Where an EV can charge: home or workplace charging access, your electricity tariff, and how often you expect to use public charging, including rapid chargers.
These inputs matter because each changes the answer. A driver who charges an EV mostly at home on a suitable tariff faces different energy costs from one who depends on public charging. A plug-in hybrid that is charged regularly is a different proposition from the same car used mostly with its battery depleted. And a low quoted monthly payment may omit costs or conditions that matter over the full term.
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How useful are official fuel economy and range figures?
Use official figures to compare vehicles on a common basis, but do not treat them as a promise of what you will achieve. The Vehicle Certification Agency explains that published figures are based on WLTP testing and cautions that real-world economy, range and emissions can differ; it also says it is important to understand the relative environmental performance of different technologies in real-world conditions (VCA guidance on cars and fuel options).
For each SUV, record the official figure relevant to its powertrain: fuel economy for a petrol or non-plug-in hybrid, electric range and electricity consumption for an EV, or electric range and fuel economy for a plug-in hybrid. Use the figures to screen and compare similar vehicles. Then ask whether the conditions behind those figures resemble your own journeys. Loads, driving conditions and how you use the vehicle affect real-world results; a quoted EV range, for example, is not a guaranteed distance on every trip.
Keep the test figure and your planning estimate separate in your comparison. The official number makes the initial comparison consistent; the planning estimate should reflect your use and retain some margin rather than assume ideal conditions. Do not combine one vehicle’s official result with another vehicle’s real-world result and call it a like-for-like comparison.
How do you calculate the total cost of owning each SUV?
Compare the cost over the same period, rather than deciding from the purchase price or the energy bill alone. A useful total-cost estimate includes the costs you can identify for the exact vehicle and your likely ownership pattern.
- Purchase, finance or lease costs: enter the price or total payments, including deposit, contract length, mileage allowance, fees and any final payment. Do not compare a lease payment with a cash purchase price as if they covered the same thing.
- Depreciation or resale value: estimate the vehicle’s value at the end of your chosen period, or use a total-cost figure that already accounts for it. Treat resale assumptions cautiously: the evidence here does not establish future values for any specific SUV.
- Fuel or electricity: calculate expected annual energy use from your mileage and a realistic consumption assumption, then multiply by the relevant fuel price or electricity tariff. For an EV, split charging between home, workplace and public charging if the prices differ.
- Servicing and maintenance: include routine costs using comparable, vehicle-specific assumptions. Do not assume these costs are identical across all models or powertrains without evidence.
- Tax and local charges: check current vehicle tax and any charges relevant to where you drive. Rules can change, so use current official information rather than an old comparison.
- EV charging setup: add a home charger and installation if you need them and the property is suitable. They are not necessary for every EV buyer, and charging equipment and installation are separate considerations.
- Other costs: include insurance or other material costs only when you have reliable, comparable figures for each vehicle.
Then add the costs over the same period, making clear which are estimates and which are quoted amounts. Check whether a published total already includes depreciation, tax or energy before adding those items yourself; otherwise you may count something twice. Keep assumptions alongside the total so you can change one input, such as annual mileage or the electricity price, and see what drives the result.
Why do model-by-model costs matter?
Energy Saving Trust’s illustrative SUV comparisons show why there is no dependable rule that one drivetrain always costs less. Its examples compare a Vauxhall Frontera petrol-hybrid with an electric Frontera, and a petrol Hyundai Kona with an electric Kona. The calculations use 10,000 miles a year, specified energy prices and other framework assumptions; they are examples, not current retail quotations or a forecast for every buyer.
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In one published example, the Frontera petrol-hybrid and electric versions have annual fuel or energy costs of £996 and £552 respectively, using assumptions of £1.16 per litre and £0.24 per kWh. The example’s purchase total-cost figures are £23,155 for the petrol-hybrid and £19,865 for the electric version. Across the Kona pair, the purchase totals are very close; the source’s lease calculations also produce different rankings from the purchase examples. That variation is the point: purchase terms and model-specific assumptions can reverse or narrow a cost difference.
| Energy Saving Trust illustration | Annual fuel or energy cost | Illustrative purchase total cost |
|---|---|---|
| Vauxhall Frontera 1.2 Hybrid Design | £996 | £23,155 |
| Vauxhall Frontera Design 44kWh | £552 | £19,865 |
Figures are from Energy Saving Trust’s illustrative example at 10,000 miles per year, using the framework assumptions stated above. They are not current buyer quotes; price and plan figures checked November 2026 for context. See the full SUV total-cost examples and their assumptions.
Use examples like this to understand the calculation, not to predict what you will pay. Before deciding, substitute the exact trim, current offer, payment terms, energy prices, tax rules and ownership period relevant to you. If you cannot get a reliable resale or maintenance estimate, show that uncertainty rather than presenting a precise total as certain.
How should you compare the cost of fuel and charging?
Calculate energy costs using your own expected prices and charging pattern. The Department for Transport’s published guidance gave a UK average of about 8p per mile for home EV charging, compared with 13–17p per mile to fuel a petrol or diesel vehicle, as of January 2024. It said public charging was, on average, roughly equivalent to fuelling an equivalent petrol car (UK Government guidance on EV costs and charging). These are dated averages, not current prices for your vehicle, tariff or charging network.
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A practical calculation is:
Annual energy cost = annual miles × energy cost per mile.
For an EV that uses different charging options, estimate each share separately and add them. For example, if you expect some charging at home and some in public, apply your home electricity cost to the home-charged share and your expected public rate to the remainder. Do not apply a home-charging average to all annual mileage if you expect to rely heavily on public chargers. For petrol and non-plug-in hybrids, use a realistic fuel-consumption estimate and the fuel price you expect to pay; do not assume the official test figure will be your exact result.
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Energy Saving Trust says savings from EV charging are generally greatest for drivers with home access and an EV or time-of-use tariff. It gives an indicative cost of about £17 for a full home charge for a fully electric car with a typical range around 220 miles, or about £8 with an eligible time-of-use tariff. These are illustrative estimates from its guidance, not a guarantee of a current charge cost: the vehicle, tariff and amount of energy needed all matter (Energy Saving Trust EV guidance).
The same DfT guidance reports that, in a 2022 survey, 93% of surveyed electric and/or plug-in-hybrid drivers had home charging access and 90% charged overnight. Those figures describe survey respondents, not all UK drivers. If you do not have suitable parking or charging access at home or work, model the public charging you would actually use instead of assuming the cost pattern of a household with a driveway and an overnight tariff.
Which SUV type fits your journeys?
Choose by the journeys you make and the way you will refuel or recharge, not just by the drivetrain label. The distinctions below help you decide which exact models are worth costing out.
Petrol SUV
A petrol SUV is straightforward to compare if you can estimate your annual fuel use and likely fuel price. It does not depend on finding a charging point during the journey, but fuel remains a substantial running-cost input in the total-cost calculation. Compare the exact model’s official economy with your expected journey mix, and include the full purchase or finance terms, tax, maintenance and resale assumptions rather than treating the fuel figure as the whole answer.
Non-plug-in hybrid SUV
A non-plug-in hybrid, including a full hybrid, does not require the owner to connect it to an external charger. That makes it different from a plug-in hybrid even though both may be described simply as “hybrid.” Compare its fuel economy and price with a similar petrol SUV and, if relevant, an EV using the same mileage and ownership assumptions. The label alone does not tell you what your real-world fuel use will be.
Plug-in hybrid SUV
A plug-in hybrid (PHEV) has a chargeable battery, can drive electrically for some distance, and uses fuel when the battery’s charge is depleted. Its running costs depend in part on how often you can charge and how much of your mileage is driven electrically. If you expect to charge rarely, do not calculate it as though every trip begins with a full battery.
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Battery-electric SUV
A battery-electric SUV has no tailpipe emissions and needs charging access that fits your journeys. Record its exact official range and charging capability, then consider how much of your charging would be at home, work or public locations. Energy Saving Trust gives a typical BEV range estimate of around 220 miles, while noting that actual range depends on the vehicle and its load, among other factors; that typical figure should not be mistaken for the range of every SUV. Check whether your usual long journeys and stops fit the specific vehicle and charging options, and include any home charger and installation cost only if you need them.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How should you assess range and charging access?
For each EV or PHEV on your shortlist, write down the official range, your most frequent long journey and where you could charge before, during or after it. A range figure is a comparison tool, not a guarantee of real-world distance. If your trips are mostly short and you have convenient charging, range may matter less than it would for frequent long journeys with limited charging options.
Ask these practical questions before treating an EV as a fit:
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- Can you charge at home or work, and is that access dependable?
- If you have home parking, is it suitable for a charger, and do you need to account for equipment and installation?
- Which journeys would require public charging, and do the expected stops fit your route and schedule?
- How much of your charging would be public or rapid charging, and what price assumption will you use for it?
- For a PHEV, will you charge often enough for electric driving to make up a meaningful share of your regular mileage?
Do not assume every EV owner must install a wallbox. Workplace or public charging may suit some drivers better; for others, a home charger may make charging more convenient or lower-cost. The right setup depends on property, parking, vehicle compatibility and the way you use the car. Treat access and installation as questions to resolve for your own situation, not as a universal requirement.
How do the emissions of petrol, hybrid and electric SUVs compare?
Separate tailpipe emissions from emissions across the vehicle’s life. The UK Government estimates that a typical EV produces around two-thirds less lifetime greenhouse gas emissions than an equivalent petrol car, including battery production and disposal. The estimate is typical, depends on the vehicles and assumptions compared, and is expected to improve as the electricity system decarbonises. EVs have zero tailpipe emissions, which can benefit local air quality, but that does not mean they have zero lifecycle emissions (UK Government EV guidance).
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Use that estimate as context, not as a precise lifecycle result for every pair of SUVs. To compare two exact vehicles, the evidence would need to match those vehicles and their use; do not convert a typical government estimate into a model-specific claim. And when assessing a PHEV, consider how it is charged and driven: its real-world fuel use may not match test performance.
What UK tax or policy changes should you check?
Check the tax and charging rules in force when you buy, rather than relying on an old comparison. Vehicle tax, local charges, tariffs and available incentives can change and may affect the total cost. The research underpinning this guide does not establish every buyer’s current tax liability, so use current official rules for the vehicle and location you are considering.
Energy Saving Trust’s page describes a road charge for electric and plug-in-hybrid vehicles as planned from April 2028, at 3p per mile for EVs and 1.5p per mile for PHEVs. Because this is future-facing and policy-sensitive, check the latest official rules before including it in a purchase calculation; do not treat a planned charge as a settled cost without confirming its status and effective date. If your ownership period could extend beyond a policy change, show the assumption separately so it can be updated.
What is a useful final comparison checklist?
Before you choose, check that your comparison answers these questions:
- Are the SUVs similar in size and equipment, and are you comparing exact versions?
- Are annual mileage, ownership period and payment basis the same?
- Have you distinguished mild, full and plug-in hybrids rather than treating “hybrid” as one type?
- Have you used WLTP figures as a common starting point, without treating them as guaranteed real-world results?
- Does the energy calculation reflect your fuel price, home tariff and expected share of public charging?
- Does the total include purchase or contract costs, depreciation or resale assumptions, maintenance, tax and any necessary charging setup?
- Have you checked current tax and policy rules rather than relying on historic figures?
- For an EV or PHEV, do range and charging arrangements work for your actual journeys?
- Are uncertain assumptions—especially resale value, future policy and energy prices—visible rather than hidden in one precise-looking total?
If one option is cheaper only under a particular assumption, such as low-cost home charging or a favourable resale estimate, keep that condition attached to the result. A comparison is most useful when it shows what would change the ranking, not just which number is smallest today.
Frequently Asked Questions
Can I compare an SUV lease with buying one outright?
You can compare them as alternative ways of getting a vehicle, but first align the period and costs included. A lease has contract terms such as a mileage limit and may not include the same ownership or resale value assumptions as a purchase calculation.
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No. A home wallbox is one charging option, not a universal requirement. Whether home, workplace or public charging is practical depends on your parking, access, vehicle and routine.
Will a plug-in hybrid save money if I only charge it occasionally?
You should not assume it will. Its electric driving depends on charging, so estimate costs using the share of your own mileage you expect to drive on electricity and the fuel use when it runs on petrol.
Are electric SUVs automatically zero-emission vehicles?
They have zero tailpipe emissions, but manufacturing and disposal also contribute to lifecycle emissions. The UK Government’s typical comparison includes those stages and estimates lower lifetime greenhouse gas emissions than an equivalent petrol car.
