ADAC tested five EVs for charging losses. One wasted a quarter of the energy
Germany’s ADAC measured charging losses on five EVs and found that a household socket wastes between 12.7% and 24.2% of the electricity drawn. An 11 kW wallbox cut every car’s losses to between 5.1% and 7%.
Some of the electricity you buy to charge an electric car never reaches the battery. Germany’s ADAC measured how much, and on a household socket the new Mercedes CLA lost 24.2% of it.
The meter does not care where the energy ended up. If the wall delivers 30 kWh and the battery accepts 27, the bill is for 30.
The charger matters more than the car. Every model ADAC tested improved sharply on an 11 kW wallbox, and the Mercedes fell from 24.2% to 6.9%.
On a 2.3 kW household socket the rest of the field ran closer together. The Tesla Model Y lost 12.7%, the Renault 5 13.7%, the Volvo EX30 14.2% and...
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