Cold batteries, cabin heating and motorway speeds all affect an electric car’s winter range. Here is what independent testing tells us — and what UK drivers can do to get more from each charge.
On a frosty morning, the windscreen needs clearing, the cabin is freezing and the range estimate looks less cheerful than it did yesterday. It is easy to assume the battery has lost capacity. Usually, the explanation is simpler: the car needs more electricity to warm itself and travel the same distance.
The drop is real, but it varies enormously. A short school run, a damp A-road journey and two hours on the motorway put very different demands on an EV.
Cold batteries: slower chemistry, not instant damage
Lithium-ion batteries work best within a suitable temperature range. In cold conditions, chemical reactions slow and internal resistance rises. A car’s battery management system may temporarily restrict power, regenerative braking or charging while the pack is cold. Some vehicles also use energy to heat the battery.
This is not the same thing as permanent battery degradation. Performance can recover as the pack warms. The number on the range display is an estimate based partly on recent consumption; it is not a battery-health report. Compare miles per kWh on similar journeys before deciding something is wrong.
Why cabin heating makes short trips expensive
An electric car cannot normally rely on waste engine heat to warm its occupants. Cabin heating, demisting and sometimes battery heating draw electrical energy, leaving less available for driving.
That matters most when the journey is short. The car may spend several minutes getting comfortable, only to cover five miles before parking again. On a longer drive, the initial warm-up makes up a smaller share of the total energy used.
Once the cabin is warm, a moderate temperature setting and heated seats or steering wheel, where available, can help. Never switch off necessary demisting to save range: being able to see properly is non-negotiable.
Does a heat pump really improve winter range?
A conventional resistance heater produces heat directly from electricity. A heat pump transfers heat into the cabin more efficiently under suitable conditions. It can reduce the heating penalty, although the benefit depends on the car, outside temperature and journey length. Some systems still need supplementary heating in severe cold.
In What Car?’s 2024 winter range test, a Volkswagen ID.7 fitted with a heat pump travelled 268 miles, versus 254 miles for a similar ID.7 without one. That is a 14-mile advantage in those conditions, not a promise of 14 extra miles every winter day. The heat-pump car also had a panoramic roof, so the test was not a perfectly controlled, single-variable comparison.
Check the specification of the exact UK version you are considering. A heat pump might be standard, optional or unavailable.
How much range disappears? The evidence needs context
A fixed claim that ‘EVs lose 30% in winter’ tells you surprisingly little. Temperature, speed, road conditions, battery chemistry and heating systems vary. So does the benchmark used to calculate a percentage.
Norway’s NAF and Motor El Prix testing recorded an average range shortfall of 18% against official WLTP figures in winter 2025, when temperatures ranged from -6°C to +8°C. In January 2026, a 24-car test took place in much harsher weather, with the route reaching -32°C. The average WLTP shortfall was 38%. That is evidence of how severe cold can affect EVs, not a forecast for a typical British November.
Both figures compare measured distance with WLTP ratings. They do not measure how much each car lost compared with its own summer road-test result. That distinction matters.
Why motorway driving makes winter range harder to predict
At a steady 70mph, an EV spends substantial energy pushing through the air. Higher speed increases aerodynamic drag sharply, while cold, dense air, headwinds, rain, standing water and roof boxes can make things worse. There is also little opportunity for regenerative braking when cruising for miles at a time.
Germany’s ADAC 2026 winter motorway test reproduced the same journey at 0°C for 14 family EVs. The Audi A6 Avant e-tron performance managed 441km, around 274 miles, before needing a charge. The simulated German route included speeds above the UK’s 70mph motorway limit. Calling that a British 70mph result would be misleading.
Use your car’s recent motorway consumption and estimated battery level at the destination rather than treating WLTP as a motorway guarantee. Our five checks before a long EV journey cover the wider planning basics.
Preheating and battery preconditioning are not quite the same
Cabin preheating warms the interior before departure. Battery preconditioning brings the battery towards a more suitable temperature, particularly ahead of rapid charging. Some EVs can do both; the controls and triggers are not universal.
If your car supports it, setting a departure time while plugged in can shift some heating demand to your home electricity supply. That still costs energy, and preheating may not fall within your off-peak tariff hours. Check the car, wallbox and electricity schedule rather than assuming the cost is zero.
On longer trips, some models prepare the battery automatically when a rapid charger is selected in the built-in sat-nav. Kia explains battery preconditioning, while Tesla’s winter guidance covers departure warming and charging preparation. An ordinary phone navigation route does not necessarily trigger battery heating. For a deeper look, read our battery preconditioning guide.
Expect colder batteries to charge more slowly
An icy battery may initially accept less power from a DC rapid charger, even if the charger’s advertised maximum is far higher. Charging speed also depends on the battery’s state of charge and the power available at the charger. As the battery fills, charging typically slows, especially towards and beyond 80%.
When practical, arrange a rapid stop after driving for a while and use the car’s battery preparation feature where available. For normal home charging, follow the manufacturer’s recommended limits and raise the target when a longer journey requires it. Our UK home charging guide explains wallboxes and charging schedules.
Small changes that help on a cold UK journey
Check tyre pressures when cold against the manufacturer’s figures, clear ice or snow from the car and remove unused roof accessories. Preheat while plugged in if supported. Drive smoothly at a steady, legal speed, leaving more stopping distance in poor conditions.
For a winter motorway trip, check whether planned chargers are working, keep an alternative stop in mind and allow a sensible battery reserve. Watch actual miles per kWh as the journey develops. A windy, wet drive with passengers and luggage is not comparable with a mild-weather commute.
Tech Torque Verdict
Winter can make an EV less efficient, but it does not make the battery suddenly defective. Cabin heating, a cold pack and motorway conditions combine to reduce usable range. Heat pumps, preconditioning and realistic journey planning can help without asking drivers to compromise safety.
Forget a universal winter-loss percentage. Get to know your car’s real consumption, charge for the trip ahead and leave yourself some breathing room. The most effective winter habit is knowing where your next charge is before you need it.
