What does electric car range mean?
Electric car range is the maximum distance a fully charged battery can cover before it reaches zero. Unlike a petrol or diesel car, where you fill up at a forecourt, most EV owners start each day with a full battery charged overnight at home, so range becomes a question of how far you can go between home charges rather than how far to the nearest pump.
The figure you see advertised for any EV is the official WLTP range: a standardised lab measurement that allows fair comparison between models. It is not a guarantee of what you will achieve on the road.
What is WLTP and why does it matter?
WLTP stands for Worldwide Harmonised Light Vehicle Test Procedure. It is the official standard used across the UK and Europe to measure the range and fuel economy of every new car. For electric vehicles, it produces the range figure that manufacturers advertise and that you will find on every new EV's specification sheet.
WLTP replaced the older NEDC test in September 2017 and became mandatory for all new cars by September 2018. The NEDC test was widely criticised for producing unrealistically optimistic figures because it covered only 11 km at an average speed well below 30 mph. WLTP is significantly more demanding.
How is the WLTP test conducted?
- The test runs for 30 minutes and covers 23.25 km across four driving phases: low, medium, high, and extra-high speed.
- Average speed during the full cycle: 46.5 km/h. Maximum speed: 131.3 km/h.
- The laboratory temperature is set at 23°C.
- The vehicle's climate control system is switched off during the test.
- The test is conducted on a rolling road in controlled conditions, not on public roads.
The test conditions are more representative than NEDC, but they still differ from everyday UK driving in important ways, most notably the 23°C lab temperature and the absence of heating or air conditioning load.
Source: Vehicle Certification Agency (VCA)
How much range do current electric cars offer?
The average new electric car on sale in the UK in 2026 offers approximately 300 miles of WLTP range, though this varies significantly by segment and price point.
| Segment | Typical WLTP range | Examples |
|---|---|---|
| City and budget EVs | 150 to 220 miles | Citroën ë-C3, Fiat 500e |
| Mid-range family EVs | 220 to 320 miles | Volkswagen ID.3, Kia EV6 Standard Range |
| Long-range family and premium | 320 to 470 miles | Tesla Model 3 Long Range RWD (466 miles WLTP), Audi A6 e-tron |
| Top-range premium | 470 miles+ | BMW iX3 (up to 500 miles WLTP), Mercedes CLA Electric |
WLTP figures are correct at time of writing and sourced from official WLTP certification data. Figures vary by trim level. Verify the specific variant you are considering on the manufacturer's UK website before purchasing.
For a full ranked comparison of the longest-range electric cars currently on sale in the UK, with confirmed WLTP figures and leasing options for each model, see our dedicated guide.
What affects electric car range in the real world?
Real-world range is typically 70 to 75% of the WLTP figure in mixed UK driving. In adverse conditions, the gap can be significantly wider. The main factors are below.
Temperature
Cold weather reduces the efficiency of lithium battery cells and increases the energy demand for cabin heating. In a UK winter, range reductions of 20 to 40% versus the WLTP figure are typical. The WLTP test is conducted at 23°C with climate control off: conditions that are rarely replicated in a British January.
Speed
Motorway driving at 70 mph typically produces range 20 to 30% below the WLTP figure. The WLTP test's average speed is just 46.5 km/h (under 30 mph), so sustained high-speed driving draws significantly more energy. Urban driving, by contrast, loses less range because regenerative braking recaptures energy during every slowdown.
Driving style
Smooth, anticipatory driving with gentle acceleration and coasting can improve real-world range by 15 to 25% compared to aggressive driving. This is one of the easiest ways to close the gap between the WLTP figure and what you actually achieve.
Tyre and wheel size
Larger, wider wheels increase rolling resistance and reduce range. Underinflated tyres add further resistance. Checking tyre pressure monthly and choosing smaller wheel options where available can meaningfully improve efficiency.
Heating and cooling load
Running the full cabin heater places a significant draw on the battery. Seat heaters and steering wheel heaters achieve a similar comfort level at a fraction of the energy cost. Heat pumps, now standard on most new EVs, recover waste heat more efficiently than resistive heating and reduce the range penalty in cold weather.
How does range affect your home charging setup?
Range and home charging work together. A car with a larger battery takes longer to charge fully on a 7 kW home wallbox. For example, a 75 kWh battery takes approximately 11 hours to charge from empty on a 7 kW charger, which is well within an overnight charge window. A 100 kWh battery takes 14 to 15 hours, which is still manageable overnight but leaves less margin.
The practical benefit of a larger battery is that you charge less frequently. A 500-mile WLTP car charged to 80% gives you a realistic 280 to 350 miles of real-world range, which covers several days of typical UK driving before you need to top up. Pairing a long-range EV with a smart EV tariff that charges overnight at lower rates maximises the economic advantage of a large battery.
For help choosing the right overnight rate, see our EV tariff comparison.
How to make the most of your EV's range
- Pre-condition while plugged in. Use the car's app to warm or cool the cabin before you leave, while it is still connected to the charger. This uses grid power rather than battery power and means you set off with a warm car and a full charge.
- Charge to 80% for daily use. Only charge to 100% before long trips. Keeping the battery between 20 and 80% is better for long-term battery health and still covers most daily driving needs comfortably.
- Use Eco mode on motorways. Eco mode reduces maximum power output and limits climate control intensity, both of which extend range significantly at motorway speeds.
- Use regenerative braking in traffic. Set the highest available regen level in urban driving. Every time you slow down, you recapture energy back into the battery rather than losing it as heat through the brakes.
- Check tyre pressure monthly. Underinflated tyres can reduce range by up to 5%. A two-minute check at a forecourt air pump each month is one of the simplest ways to preserve range.
Key takeaways
- WLTP is the official UK range standard, replacing the older NEDC test from 2018.
- The WLTP test runs at 23°C with climate control off, so real-world UK range is typically 10 to 30% lower.
- Cold winter weather can cut range by up to 40%, especially at motorway speeds.
- The average new EV on sale in 2026 offers approximately 300 miles WLTP; premium models reach 460 to 500 miles.
- A 7 kW home wallbox paired with an overnight EV tariff makes the most of a large battery.
Frequently asked questions
What does WLTP range mean for electric cars?
WLTP (Worldwide Harmonised Light Vehicle Test Procedure) is the standardised lab test used to calculate official EV range in the UK and Europe. It runs for 30 minutes across four speed phases at a controlled temperature of 23°C. It replaced the older NEDC test in 2017 to 2018 and provides a more consistent basis for comparison, though real-world range is typically 10 to 30% lower.
How accurate is the WLTP range figure?
WLTP figures are useful for comparing models on a like-for-like basis but should not be treated as a guaranteed real-world number. Most UK drivers achieve 70 to 75% of WLTP in mixed driving. The test is conducted in a lab at 23°C with climate control off, so UK winter conditions and motorway speeds both reduce the real-world figure.
What range do I actually need from an electric car?
Most UK drivers cover well under 40 miles per day, so even a 200-mile WLTP car is sufficient for daily use when charged overnight at home. Drivers who regularly do long motorway trips benefit from 300 miles or more WLTP to reduce the frequency of en-route rapid charging stops.
Does cold weather really reduce EV range?
Yes, and this is particularly relevant in the UK. Cold temperatures slow the electrochemical reactions inside lithium battery cells and increase the energy demand for cabin heating. In winter, range reductions of 20 to 40% versus the WLTP figure are typical. Pre-conditioning the battery and cabin while plugged in at home significantly mitigates the effect.
What is the longest range electric car available in the UK?
As of 2026, the BMW iX3 leads on official WLTP figures at up to 500 miles according to independent test data citing official WLTP certification. Premium models from Mercedes and Tesla also exceed 460 miles WLTP. Figures vary by trim level, so verify the specific variant on the manufacturer's website before purchasing.