Electric car comparison tool

Compare up to three electric cars side by side on price, range, efficiency and running cost. Enter the cars you're weighing up and see them at a glance.

Electricity price (p per kWh) Annual mileage

Fill in the cars you're comparing. Leave a car's name blank to hide that column.


Price (£)
Official range (miles)
Efficiency (miles/kWh)
Battery (kWh)
Rapid charge speed (kW)

Results

Estimates from the figures you enter. Rapid charge is an approximate 10–80% time. Running cost is electricity only. Real-world range and efficiency are often lower than official figures.

Worked out at https://sumlytools.com/ev-comparison-calculator/ — a guide only, not financial advice.

How to compare electric cars fairly

Headline prices and official ranges only tell part of the story. The figures that affect your daily life are efficiency, which drives running cost, real-world range, and how quickly the car charges on a long trip. This tool puts them side by side so you can weigh them up together.

What each figure means

Efficiency (miles per kWh) is the EV equivalent of miles per gallon. A car doing 3.5 miles per kWh costs less to run than one doing 3.0, all else being equal. Range is how far on a full charge, though real-world range is often 10% to 30% below the official number. Rapid charge speed, in kW, decides how long a motorway top-up takes.

Where to find the numbers

Manufacturer websites list price, range, battery size and charging speed. For real-world efficiency, owner reviews and EV databases are more honest than the official figures, especially for winter driving. Enter whatever you can find; even rough numbers make the comparison useful.

Don't forget the full cost

Running cost here is electricity only. Also think about insurance, servicing, and how much value the car is likely to lose. If you're buying through work, the EV salary sacrifice calculator shows the true monthly cost, and the EV running cost calculator compares charging against petrol in more detail.

Frequently asked questions

Where do I find a car's efficiency in miles per kWh?

Manufacturers usually quote it, or you can divide the official range by the usable battery size in kWh. Real-world figures are often a bit lower than the official ones, especially in winter and on motorways, so it's worth checking an owner review site.

What counts as good range for an electric car?

Most new EVs offer 200 to 300 miles of official range, and premium ones more. Real-world range is often 10% to 30% lower. If you mostly do short local trips and can charge at home, range matters less than you'd think.

How is the cost per mile worked out?

It divides the electricity price you enter by the car's miles per kWh. At 25p per kWh and 3.5 miles per kWh, that's about 7p a mile. A cheaper overnight tariff brings it right down.

Does this include charging time?

Yes. Enter each car's rapid charging speed in kW and its battery size, and the tool estimates a 10% to 80% rapid charge, which is the part you'd usually do on a longer journey.