EV Real-World Range Calculator
Manufacturer range figures are measured in ideal lab conditions. Find out what your EV will actually do in real Australian driving.
Why EV range figures are misleading
Manufacturer range figures are measured under the WLTP (Worldwide Harmonised Light Vehicle Test Procedure) — a standardised lab test designed for consistency, not real-world accuracy. Australian conditions can shift your actual range by 20–40% compared to the rated figure.
- Highway speed is the biggest killer: EV range drops sharply at highway speeds due to aerodynamic drag. A Tesla Model Y rated at 512km might do 430–460km of city driving but only 360–400km at 110km/h on the freeway. Wind resistance increases with the square of speed.
- Heat hurts more than cold: While cold weather slows battery chemistry, extreme heat (35°C+) also reduces range and forces the battery management system to work harder. Both extremes can cut range by 10–20%.
- Air conditioning is a bigger drain than heating: Running the AC on a hot Australian day can consume 2–4 kWh/hour on top of driving loads — equivalent to 15–25km of range per hour of running. Heating uses less energy as EVs have efficient heat pumps.
- City driving can match or beat the rated range: Regenerative braking recovers energy every time you slow down. In heavy suburban stop-start traffic, real-world range can actually exceed WLTP figures for models with good regen systems.
- Tyre pressure and condition matter: Under-inflated tyres increase rolling resistance and can cut range by 3–5%. EV-specific tyres with lower rolling resistance are available for most popular models and can improve range by 3–8%.
Frequently Asked Questions
Why is my EV's real-world range less than the advertised range?
Manufacturer range figures use the WLTP test — a controlled lab procedure at moderate speeds, mild temperatures, and no air conditioning. In real-world Australian conditions — highway speeds, summer heat, AC running, full load — most EVs achieve 75–90% of their rated range. An EV rated at 500km might realistically do 380–450km on a highway trip.
How does hot Australian weather affect EV range?
Temperatures above 35°C can reduce EV range by 10–25%. The battery management system works harder to cool the battery, and running air conditioning in extreme heat adds 2–4 kWh/hour of extra load — equivalent to 12–25km of range lost per hour of AC operation. Parking in shade and pre-conditioning the cabin while plugged in both help.
Does highway driving reduce EV range more than city driving?
Yes — significantly. At 110 km/h, aerodynamic drag consumes far more energy than at suburban speeds. Most EVs get better range in city stop-start driving than on the highway — the opposite of petrol cars. Regenerative braking in city traffic recovers energy. At highway speeds, expect 15–25% less range than the rated WLTP figure.
How does towing a caravan or trailer affect EV range?
Towing dramatically reduces EV range — often by 40–60%. A Tesla Model Y rated at 512km might achieve only 200–250km when towing a caravan due to aerodynamic drag and extra weight. Long-distance caravan travel with an EV requires very careful charging stop planning. Always check the manufacturer's towing-specific range figures before planning a trip.
Does driving speed significantly affect EV range?
Yes — speed has a major effect on EV range because aerodynamic drag increases with the square of velocity. Driving at 90 km/h instead of 110 km/h can extend range by 15–25%. Most EVs have an efficiency display showing real-time kWh/100km — monitoring this helps you understand the speed-range trade-off. On long trips, driving at 90–100 km/h can eliminate a charging stop.
What can I do to improve my EV's real-world range?
Several habits help: maintain tyre pressure at the recommended level (under-inflation costs 3–5%), use eco/range mode, pre-condition the cabin before unplugging so it uses grid power rather than battery, drive smoothly, reduce highway speeds, and charge to 80–90% for daily use (unless your car uses LFP chemistry, which tolerates regular 100% charges).