Of course any petrol or diesel powered vehicle would also suffer a reduction in range when towing.
Here's a caravan tow test result for a Toyota Prado GXL 2.8 diesel which suffered a 43% reduction in range.
Based on these figures EV's are far more efficient towing vehicles. Amazingly so when you consider the extra drag the caravan provides behind the Tesla compared to the Prado's caravan like shape.
"The Prado achieved 9.1L/100km when travelling the majority of the time on B-roads and freeways without a caravan behind. When towing, fuel consumption climbed to 15.9L/100km. The Prado’s 150L fuel capacity is a bonus, taking away range anxiety when touring in remote areas."
