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The results are somewhat surprising, as they reveal cheapest car, the Hyundai Ioniq, to be the most efficient of the three. On the other hand we should have expected such results, as the cheap car is much lighter and has very few features, when compared to the luxury sedan and SUV.
As you can see from the figures above, the Ioniq is exceptional when it comes to city traffic at relatively low speeds. Its top speed is just 150kph/93mph, as it has only a 88kW/117hp motor and 28kWh battery at 32.000USD, while the cheapest Tesla Model S 70 has a 245kW motor and 70kWh battery pack. The model S and X used in this test are both AWD (Model S with two 192kW/259hp motors and the Model X 90D with ~700hp total), so that's where the extra weight comes from.