BoE investigates 'terrifying' rise in borrowing to fund new car purchases in House prices and the economy Posted January 8 Have a Jaguar I-Pace myself. Efficiency is very poor at around 2.6 miles per kW. Because of the tariff I'm on it works out at best 2p per mile or worst 6p per mile. Real world get about 240 miles range. So doesn't matter really about the efficiency. I wouldn't trade it for a tesla under any conditions. When I sit in a tesla vs what I'm used to, the build quality is shocking.