When we say economy to match little hatchbacks, we don’t mean an average hatch. In official testing, the 240-kW (326-hp) 740e iPerformance returned between 2.0 and 2.5 L/100km (113 and 141.2 mpg). The discrepancy, for those wondering, is down to whether the car is long or short wheelbase, and if xDrive all-wheel drive is specced.
Of course, whether or not you’ll actually achieve these figures is another thing altogether, but managing to make a five-meter long limousine sip like a VW Polo BlueMotion under any conditions is mightily impressive.
Electric drive runs on a 9.2 kWh lithium-ion battery pack located beneath the rear seats, is recharged either through regenerative braking, or from a 240 V electricity outlet. With the latter, a full charge can be attained in four hours. On the NEDC test cycle, the standard 740e will return 2.1 L per 100 km and 49 g of CO2 per km, while the long-wheelbase version does 2.3 L per 100 km and 53 g of CO2 per km.
A Lithium-ion high-voltage battery with a gross capacity of 9.2 kWh, is positioned under the rear seat bench; and can be charged from a domestic power socket in under four hours or from a BMW i Wallbox in under three hours.
When it goes on sale in the United States of America, the 2017 BMW 740e iPerformance will start from $90,095. In its domestic market of Germany, on the other hand, the full-size plug-in hybrid luxury sedan starts from €91,900.
The biggest and most direct competitor of the BMW 740e iPerformance in this segment the Mercedes-Benz S550e Plug-in Hybrid, which autoevolution had tested in European spec when it was called the S500 Plug-in Hybrid.