Real-world energy consumption of an electric car in winter: why it increases and how to optimise it

Driving an electric car in winter poses new challenges. Low temperatures directly affect battery performance, energy efficiency and, therefore, range. Here, we explain why consumption increases and how to minimise it, so you can keep enjoying sustainable mobility even on the coldest days.

How winter affects EV energy consumption

During winter, electric cars consume more energy to keep the interior warm and to compensate for the loss of battery efficiency. This increase can range between 15% and 30%, depending on the model, weather conditions, and driving style.

Average real-world EV energy consumption

Although manufacturers provide range figures based on standardised tests, real-world consumption can vary. In winter, an electric car can go from consuming 15 kWh/100km to more than 20 kWh/100km. The factors that most influence this increase are speed, the use of climate control, and road type.

Why consumption increases in winter

Battery temperature

Lithium batteries lose efficiency when the temperature drops. This means lower charge capacity and slower energy delivery, which affects both the vehicle's range and performance.

Use of heating and climate control

Electric heating uses a significant amount of energy. To reduce this impact, we recommend pre-conditioning the vehicle while it is plugged in, using mains power instead of the battery.

Aerodynamics and friction

Cold air is denser, which increases aerodynamic drag, not only for electric cars but for all vehicles. In addition, winter tyres, although necessary for safety, generate more friction, which also increases consumption.

More demanding driving

Adverse weather conditions force much more cautious driving, with more frequent acceleration and braking. This also reduces your EV's efficiency.

How to reduce EV energy consumption in winter

During the colder months, applying certain practices can make a difference to your electric vehicle's performance.

• Pre-condition the vehicle before setting off: if your car allows it, programme the climate control system while it is plugged in. In this way, the interior will reach a comfortable temperature without using battery energy. Also, pre-heating the battery improves its performance from the very first kilometre.
• Use heating sparingly: climate control is one of the biggest energy drains in winter. Instead of heating the entire cabin, try efficient alternatives like heated seats or a heated steering wheel, which keep you warm with less impact on range.
• Maintain a constant speed and avoid sudden acceleration: smooth driving is key to reducing consumption. Avoid unnecessary braking and acceleration, and make the most of regenerative braking to recover energy. On long journeys, cruise control can help you maintain a stable and efficient speed.
• Use suitable tyres and check their pressure: winter tyres offer greater safety in adverse conditions, but they also generate more resistance. To minimise their impact on consumption, ensure they are correctly inflated, as pressure tends to drop in the cold, increasing friction and energy usage.
• Plan your routes in advance: avoiding traffic jams and unnecessary journeys is fundamental to optimising battery use. Use apps that show you real-time traffic and locate charging points on your route.

By applying these simple strategies, you will not only improve your EV's performance in winter, but also contribute to keeping your EV driving safe, efficient, and responsible.

How range varies in cold conditions

Cold weather can also affect range, which may decrease by up to 40% in sub-zero temperatures. For example, a car with a theoretical range of 400 km might offer only 240 km in extreme cold conditions. However, this is just an estimate. Actual range depends on the specific model, battery health, and your use of auxiliary systems.

Benefits of smart charging in winter

Smart charging allows you to schedule charging at times when the temperature is more favourable, such as during the night in closed garages. In addition, some apps allow you to monitor battery health and adjust charging power to avoid overheating or loss of efficiency.

FAQs. Our expert answers

Why does range drop when it's cold?

Because batteries lose thermal efficiency, and the car needs more energy to maintain comfort and performance. In addition, cold air and friction increase driving resistance.

How much does consumption increase in winter?

It can rise by 15–30%, depending on factors like outside temperature, heating usage, and driving style.

Does the type of charger affect performance?

Yes. Rapid chargers can be affected by the cold, reducing their charging speed. In winter, it is advisable to use slow or medium chargers in controlled environments to preserve battery health.

Should I always charge to 100% in winter?

Not necessarily. Charging to 80% is usually sufficient for most daily journeys, and helps prolong battery life (plus, the battery can be recycled when the time comes to replace it). You should only charge to 100% for long journeys or in extreme conditions.