Real-world range

The distance an electric car actually covers in everyday driving, which can differ from the rated figure and is affected by speed, temperature, and driving conditions.

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Real-world range is what your electric car delivers on actual roads, and it can differ from the rated range from WLTP or EPA testing. The lab cycles are standardized and cannot copy every trip: the EPA adds tests for higher speeds, air conditioning, and cold, and WLTP includes an extra-high-speed phase, but real driving still varies.

The big factors are speed and temperature. The energy a car spends moving air out of the way rises with speed, according to fueleconomy.gov. In cold weather, that source says about two-thirds of the extra energy an EV consumes goes to heating the cabin, and the Department of Energy notes that a heat pump warms the cabin more efficiently than an electric resistance heater in most conditions. City driving also differs from highway driving: regenerative braking recovers energy in stop-and-go traffic but offers little advantage on the highway.

There is no single official real-world figure, so rated range, with its test cycle named, is the figure to compare. For winter highway trips, plan with a margin below the rated figure and use the charging network rather than the theoretical maximum.

  1. fueleconomy.gov, Fuel Economy in Cold Weather
    US EPA and DOE Accessed
  2. fueleconomy.gov, Where the Energy Goes: Electric Cars
    US EPA and DOE Accessed
  3. Department of Energy, Winterizing Your Electric Vehicle
    US Department of Energy Accessed
  4. fueleconomy.gov, Detailed test information
    US EPA and DOE Accessed
  5. Vehicle Certification Agency, The Worldwide Harmonised Light Vehicle Test Procedure (WLTP)
    UK Vehicle Certification Agency Accessed

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