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What Affects Range?

Electric vehicle (EV) range is influenced by various factors, including battery capacity, driving style, speed, terrain, weather conditions, heating/air conditioning usage, vehicle weight and tyre pressure.

Driving Style and Habits

Aggressive acceleration, frequent braking, high speeds and rapid changes in speed reduce EV range by increasing energy consumption. On the other hand, smooth driving, moderate speeds and an anticipation of traffic conditions help to optimise range.

High Speeds High speeds increase air resistance, which means that more energy is required to maintain velocity; this higher energy demand reduces an EV's range. Additionally, high speeds can deplete the battery faster due to increased power drawn from the electric motor.
Erratic Acceleration Acceleration consumes significant amounts of energy, especially in EVs where rapid acceleration draws more power from the battery, and aggressive acceleration decreases range by depleting the battery faster. Smoother, gradual acceleration preserves energy and helps to maximise EV range.
More Passengers Extra passengers and a full boot increase the total weight of a vehicle, requiring more energy to propel it. This increased weight reduces the efficiency of an EV, resulting in decreased range compared to when it's carrying fewer passengers and/or lighter cargo.

Climate & Weather

Extreme temperatures, both hot and cold, can affect an EV's battery performance. Cold weather reduces battery efficiency and range due to increased internal resistance, while hot weather can degrade battery life and reduce range because of higher energy demands for cooling.

Hot & Cold Temperatures Either extreme negatively impacts EV range. Hot temperatures increase the need for air conditioning, which drains the battery; this can also degrade battery performance, thus reducing range. Cold temperatures decrease battery efficiency and increase resistance, diminishing range.
Heating & Cooling Air conditioning/heating systems draw power from the battery to regulate cabin temperature, reducing an EV's range in the process. In extreme temperatures, the energy demand for climate control increases significantly, further decreasing an EV's overall range.
Wind Strength Strong headwinds increase aerodynamic drag, requiring more energy to maintain speed while reducing EV range. Conversely, tailwinds can provide a slight boost to range by reducing aerodynamic resistance, although this effect is generally minimal compared to the impact of headwinds.

Car Maintenance

Regular car servicing ensures optimal performance of components such as tyres, brakes and suspension, and thus contributes positively to EV range. Proper tyre inflation, brake calibration and smooth mechanical operation assist with reduced energy consumption, preserving battery power and extending EV range.

Tyre Pressure Optimal tyre pressure reduces rolling resistance, improving an EV's efficiency and extending its range. Underinflated tyres increase rolling resistance, requiring more energy to propel the vehicle, while overinflated tyres can reduce traction and stability, affecting efficiency and range.
Tyre Quality and Road Surface & Cooling High-quality tyres with lower rolling resistance improve efficiency, enhancing an EV’s range, as opposed to tyres with higher resistance. Smooth road surfaces reduce rolling resistance, improving an EV's efficiency and range. Effective cooling systems maintain optimal battery temperature, preserving performance and range.
Battery Degradation Over time, battery deterioration results in reduced capacity and ability to hold a charge, diminishing an EV's range. As the battery loses capacity, it stores less energy, leading to shorter driving distances on a single charge compared to when the battery was new.
How to Maximize EV Range Click here to find out more