About Author
Sofia Modiri Dockery
I research and write blogs on what’s happening in the EV-world.
When you think about electric cars, you may think winter will decrease your range the most. Cold batteries, heating the car more frequently, and icy mornings. However, summer driving can also subtly impact EV range; it is predictable, controllable, and still much more economical than operating a petrol or diesel vehicle.
Let’s explore the truth with EV range during summer and the reasons drivers persist in making the transition regardless.
Does Hot Weather Impact EV Range?
Electric vehicle batteries generally operate best in moderate temperatures. Cooling down a hot cabin uses a significant amount of electricity, drawing power away from the battery. However, driving behaviour impacts these changes significantly.
Long-distance road trips are becoming more frequent. Families travel with additional passengers and luggage. Drivers spend more time on motorways driving at elevated speeds. Air conditioning is used the majority of the time on hotter days, but many drivers still don’t realise this is a factor which can contribute to range decrease.
Research indicates that motorway driving is one of the main factors contributing to decreased EV efficiency, regardless of the season. This is due to the lack of regenerative braking, which can recover energy more effectively during city driving, where stop-starts are more common.
How Air Conditioning Affects Battery Efficiency
One of the biggest questions during summer is whether aircon drains an electric car’s battery. In truth, the effect is less severe than many drivers think.
Electric cars feature an advanced thermal management system that reduces unnecessary battery consumption. Some EVs even have seat coolers, which are much more efficient than cabin A/C. Although using air conditioning does require energy, industry tests indicate that the decrease in range is typically around 5%, depending on external temperatures and driving conditions.
In comparison, aggressive driving on the motorway or carrying heavy loads can have a much more severe impact on overall efficiency than climate control by itself. Many electric cars offer the option to pre-condition the cabin while still connected to a charger. This allows the interior to be cooled before departure without depleting battery power during the trip itself.
Why Real-World EV Range Is More Important Than WLTP Figures
One of the most common misunderstandings about EV range comes from the figures that are advertised.
Most manufacturers rely on WLTP testing to give official range estimates. WLTP, which stands for Worldwide Harmonised Light Vehicle Test Procedure, is the standardised laboratory testing method used throughout the automotive sector.
WLTP runs in a lab where there are controlled conditions. These figures serve as a helpful benchmark for comparing different vehicles. Factors such as heavy traffic, car load, weather conditions, terrain, and air conditioning use all affect actual performance.
This is why many drivers see a discrepancy between the official range figures and their everyday experiences. Real-world range offers a much clearer picture of how a vehicle will perform during typical commutes, school runs, and longer trips. An easy illustration of this is that WLTP and real-world driving tests are conducted in normal mode for electric vehicles, whereas those aiming for longer trips would typically choose eco mode, which enhances regenerative braking and significantly preserves range.
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Tips To Manage Summer EV Range
Maximising the range of your electric car during the summer months is typically quite simple and only requires slight changes to your driving habits.
Preconditioning the cabin prior to your trip can significantly lower battery consumption while driving. This can be controlled through smartphone apps that offer pre-conditioning. It’s crucial to keep your tyre pressures at the correct levels and look for any warning lights, especially when you have extra luggage or passengers during your holiday travels. Additionally, taking off any unnecessary roof boxes or external carriers when they are not in use can enhance aerodynamic efficiency on longer trips.
Planning your charging stops ahead of time is one of the most effective methods to ensure a stress-free summer journey, especially as the public charging network in the UK continues to grow rapidly.
Above all, it’s essential to grasp your vehicle’s real-world range instead of just concentrating on WLTP, as this understanding creates confidence in everyday driving and planning long-distance trip. All vehicles we advertise feature their real world range, typically taken from EV Database, just to give our drivers a more accurate picture of the range.
Final Thoughts
Many think EVs face challenges in summer weather, but the reality is that long-distance driving, air conditioning use, and extra weight can impact efficiency. However, these same factors also affect petrol and diesel vehicles. The key difference is that EV owners are generally more mindful of energy usage and their driving habits. We surveyed our drivers and 98% charge at home or work, avoiding expensive public charging altogether, and still see average monthly savings of £100–£125.
When real-world range expectations are used instead of idealised lab conditions, managing EV ownership becomes much simpler.
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FAQs
Yes. Air conditioning, motorway driving and heavier payloads can slightly reduce EV efficiency during summer, although the impact is usually manageable.
WLTP figures are useful for comparing vehicles, but they are achieved under controlled laboratory conditions and may not reflect real-world driving habits.
Not usually. Aircon can reduce range modestly, but higher motorway speeds often have a bigger impact on efficiency.